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TCV7104FN
TOSHIBA CMOS Integrated Circuit Silicon Monolithic
TCV7104FN
Buck DC-DC Converter IC
The TCV7104FN is a single-chip buck DC-DC converter IC. The TCV7104FN contains high-speed and low-on-resistance power MOSFETs for the main switch and synchronous rectifier to achieve high efficiency.
Features
* * * * * * * * * * Enables up to 2 A of load current (IOUT) with a minimum of external components. High efficiency: = 95% (typ.) (@VIN = 5 V, VOUT = 3.3 V, IOUT = 0.7 A) Operating voltage range: VIN = 2.7 to 5.5 V Low ON-resistance: RDS (ON) = 0.18 (high-side) / 0.12 (low-side) typical (@VIN = 5 V, Tj = 25C) High oscillation frequency: fOSC = 1500 kHz (typ.) Feedback voltage: VFB = 0.8 V 1% (@Tj = 25C) Uses internal phase compensation to achieve high efficiency with a minimum of external components. Allows the use of a small surface-mount ceramic capacitor as an output filter capacitor. Housed in a small surface-mount package (PS-8) with a low thermal resistance. Soft-start time adjustable by an external capacitor Weight: 0.017 g (typ.)
Part Marking
Part Number (or abbreviation code) Lot No.
Pin Assignment
LX EN SS
8
7
6
VFB
5
V104
The dot (*) on the top surface indicates pin 1.
1
PGND
2
VIN1
3
VIN2
4
SGND
*:
The lot number consists of three digits. The first digit represents the last digit of the year of manufacture, and the following two digits indicates the week of manufacture between 01 and either 52 or 53.
Manufacturing week code (The first week of the year is 01; the last week is 52 or 53.) Manufacturing year code (last digit of the year of manufacture)
This product has a MOS structure and is sensitive to electrostatic discharge. Handle with care. The product(s) in this document ("Product") contain functions intended to protect the Product from temporary small overloads such as minor short-term overcurrent, or overheating. The protective functions do not necessarily protect Product under all circumstances. When incorporating Product into your system, please design the system (1) to avoid such overloads upon the Product, and (2) to shut down or otherwise relieve the Product of such overload conditions immediately upon occurrence. For details, please refer to the notes appearing below in this document and other documents referenced in this document.
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Ordering Information
Part Number TCV7104FN (TE85L, F) Shipping Embossed tape (3000 units per reel)
Block Diagram
VIN2 VIN1
Current detection Oscillator Slope Compensation
Under voltage lockout Constant-current source (8 A) Error amplifier SS EN Soft Start
Control logic
Driver LX Short-Circuit Protection
VFB
Phase compensation Ref. Voltage (0.8 V)
PGND
SGND
Pin Description
Pin No. 1 2 3 4 5 Symbol PGND VIN1 VIN2 SGND VFB Ground pin for the output section Input pin for the output section This pin is placed in the standby state if VEN = low. Standby current is 10 A or less. Input pin for the control section This pin is placed in the standby state if VEN = low. Standby current is 10 A or less. Ground pin for the control section Feedback pin This input is fed into an internal error amplifier with a reference voltage of 0.8 V (typ.). Soft-start pin 6 SS When the SS input is left open, the soft-start time is 1 ms (typ.). The soft-start time can be adjusted with an external capacitor. The external capacitor is charged from a 8 A (typ.) constant-current source, and the reference voltage of the error amplifier is regulated between 0 V and 0.8 V. The external capacitor is discharged when EN = low and in case of undervoltage lockout or thermal shutdown. Enable pin 7 EN When EN 1.5 V (@ VIN = 5 V), the internal circuitry is allowed to operate and thus enable the switching operation of the output section. When EN 0.5 V (@ VIN = 5 V), the internal circuitry is disabled, putting the TCV7104FN in Standby mode. This pin has an internal pull-down resistor of approx. 500 k. 8 LX Switch pin This pin is connected to high-side P-channel MOSFET and low-side N-channel MOSFET. Description
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Absolute Maximum Ratings (Ta = 25C)
Characteristics Input pin voltage for the output section Input pin voltage for the control section Feedback pin voltage Soft-start pin voltage Enable pin voltage VEN - VIN2 voltage difference Switch pin voltage Switch pin current Power dissipation (Note 2) (Note 1) Symbol VIN1 VIN2 VFB VSS VEN VEN-VIN2 VLX ILX PD Tjopr Tj Tstg Rating -0.3 to 6 -0.3 to 6 -0.3 to 6 -0.3 to 6 -0.3 to 6 VEN - VIN2 < 0.3 -0.3 to 6 2.4 0.9 -40 to125 150 -55 to150 Unit V V V V V V V A W C C C
Operating junction temperature Junction temperature Storage temperature (Note 3)
Note: Using continuously under heavy loads (e.g. the application of high temperature/current/voltage and the significant change in temperature, etc.) may cause this product to decrease in the reliability significantly even if the operating conditions (i.e. operating temperature/current/voltage, etc.) are within the absolute maximum ratings and the operating ranges. Please design the appropriate reliability upon reviewing the Toshiba Semiconductor Reliability Handbook ("Handling Precautions"/"Derating Concept and Methods") and individual reliability data (i.e. reliability test report and estimated failure rate, etc) Note 1: The switch pin voltage (VLX) doesn't include the peak voltage generated by TCV7104FN's switching. A negative voltage generated in dead time is permitted among the switch pin current (ILX).
Thermal Resistance Characteristics
Characteristics Thermal resistance, junction to ambient Symbol Rth (j-a) Max 110.2 (Note 2) Unit C/W
Note 2:
Single-sided glass epoxy board
FR-4 25.4 x 25.4 x 0.8 (Unit: mm)
Note 3: The TCV7104FN may into thermal shutdown at the rated maximum junction temperature. Thermal design is required to ensure that the rated maximum operating junction temperature, Tjopr, will not be exceeded.
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Electrical Characteristics (Tj = 25C, VIN1 = VIN2 = 2.7 to 5.5 V, unless otherwise specified)
Characteristics Operating input voltage Operating current Output voltage range Symbol VIN (OPR) IIN VOUT (OPR) IIN (STBY) 1 Standby current IIN (STBY) 2 High-side switch leakage current ILEAK (H) VIH (EN) 1 EN threshold voltage VIH (EN) 2 VIL (EN) 1 VIL (EN) 2 EN input current IIH (EN) 1 IIH (EN) 2 VFB1 VFB input voltage VFB2 VFB input current IFB RDS (ON) (H) 1 RDS (ON) (H) 2 High-side switch on-state resistance Test Condition VIN1 = VIN2 = VEN = VFB = 5 V VEN = VIN1 = VIN2 VIN1 = VIN2 = 5 V, VEN = 0 V VFB = 0.8 V VIN1 = VIN2 = 3.3 V, VEN = 0 V VFB = 0.8 V VIN1 = VIN2 = 5 V, VEN = 0 V VFB = 0.8 V, VLX = 0 V VIN1 = VIN2 = 5 V VIN1 = VIN2 = 3.3 V VIN1 = VIN2 = 5 V VIN1 = VIN2 = 3.3 V VIN1 = VIN2 = 5 V, VEN = 5 V VIN1 = VIN2 = 3.3 V, VEN = 3.3 V VIN = 5 V, VEN = 5 V Tj = 0 to 85 VIN = 3.3 V, VEN = 3.3 V Tj = 0 to 85 VIN1 = VIN2 = 2.7 to 5.5 V VFB = VIN2 VIN1 = VIN2 = 5 V, VEN = 5 V ILX = -1 A VIN1 = VIN2 = 3.3 V, VEN = 3.3 V ILX = -1 A Min 2.7 0.8 1.5 1.5 6 4 0.792 0.792 -1 1200 0.5 -5 2.3 2.4 2.3 Typ. 450 0.8 0.8 0.18 0.21 0.12 0.14 1500 1 -8 150 15 2.45 2.55 0.1 3.2 Max 5.5 680 10 A 10 10 0.5 0.5 13 9 0.808 V 0.808 1 0.25 0.3 0.18 0.2 1800 1.5 -13 100 2.6 2.7 A V kHz ms A % C A A V A Unit V A V
VIN1 = VIN2 = 5 V , VEN = 5V RDS (ON) (H) 3 ILX = - 0.1 A , Tj=-4085 VIN1 = VIN2 = 3.3 V , VEN = 3.3V RDS (ON) (H) 4 ILX = - 0.1 A , Tj=-4085 RDS (ON) (L) 1 RDS (ON) (L) 2 Low-side switch on-state resistance
RDS (ON) (L) 3 RDS (ON) (L) 4
VIN1 = VIN2 = 5 V, VEN = 5 V ILX = 1 A VIN1 = VIN2 = 3.3 V, VEN = 3.3 V ILX = 1 A VIN1 = VIN2 = 5 V , VEN = 5V ILX = 0.1 A , Tj=-40 to 85 VIN1 = VIN2 = 3.3 V , VEN = 3.3V ILX = 0.1 A , Tj=-40 to 85 VIN1 = VIN2 = VEN = 5 V VIN1 = VIN2 = 5 V, IOUT = 0 A, Measured between 0% and 90% points at VOUT. VIN1 = VIN2 = 5 V, VEN = 5 V VIN1 = VIN2 = 2.7 to 5.5 V VIN1 = VIN2 = 5 V VIN1 = VIN2 = 5 V VEN = VIN1 = VIN2 VEN = VIN1 = VIN2 VEN = VIN1 = VIN2 VIN1 = VIN2 = 5 V, VOUT = 2 V
Oscillation frequency Internal soft-start time External soft-start charge current High-side switch duty cycle Thermal shutdown (TSD) Detection temperature Hysteresis Detection voltage Undervoltage lockout (UVLO) LX current limit Recovery voltage Hysteresis
fOSC tSS ISS Dmax TSD TSD VUV VUVR VUV ILIM
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Note on Electrical Characteristics
The test condition Tj = 25C means a state where any drifts in electrical characteristics incurred by an increase in the chip's junction temperature can be ignored during pulse testing.
Application Circuit Example
Figure 1 shows a typical application circuit using a low-ESR electrolytic or ceramic capacitor for COUT.
VIN VIN1 VIN2 EN CIN CC EN SS CSS TCV7104FN VFB COUT SGND PGND RFB2 GND GND LX L VOUT RFB1
Figure 1 TCV7104FN Application Circuit Example
Component values (reference value@ VIN = 5 V, VOUT = 3.3 V, Ta = 25C) CIN: Input filter capacitor = 10 F (ceramic capacitor: GRM21BB30J106K manufactured by Murata Manufacturing Co., Ltd.) COUT: Output filter capacitor = 10 F (ceramic capacitor: GRM21BB30J106K manufactured by Murata Manufacturing Co., Ltd.) RFB1: Output voltage setting resistor = 7.5 k RFB2: Output voltage setting resistor = 2.4 k L: Inductor = 1.5 H (LTF5022T-1R5N3R6-LC or SLF6045T-1R5N4R0-3PF manufactured by TDK-EPC Corporation) CSS is a capacitor for adjusting the soft-start time. CC is a decoupling capacitor of Input pin for the control section. (Connect it when the circuit operation is unstable due to the board layout or a feature of the CIN.) Examples of Component Values (For Reference Only)
Output Voltage Setting VOUT 1.2 V 1.51 V 1.8 V 2.5 V 3.3 V Inductance L 1.5 H 1.5 H 1.5 H 1.5 H 1.5 H Input Capacitance CIN 10 F 10 F 10 F 10 F 10 F Output Capacitance COUT 10 F 10 F 10 F 10 F 10 F Feedback Resistor RFB1 7.5 k 16 k 15 k 5.1 k 7.5 k Feedback Resistor RFB2 15 k 18 k 12 k 2.4 k 2.4 k
Component values need to be adjusted, depending on the TCV7104FN's I/O conditions and the board layout.
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Application Notes
Inductor Selection
The inductance required for inductor L can be calculated as follows: VIN: Input voltage (V) VIN - VOUT VOUT VOUT: Output voltage (V) ************* (1) L= fOSC IL VIN fOSC: Oscillation frequency = 1500 kHz (typ.) IL: Inductor ripple current (A) *: Generally, IL should be set to approximately 30% of the maximum output current. Since the maximum output current of the TCV7104FN is 2.0 A, IL should be 0.6 A or so. The inductor should have a current rating greater than the peak output current of 2.3 A. If the inductor current rating is exceeded, the inductor becomes saturated, leading to an unstable DC-DC converter operation. When VIN = 5 V and VOUT = 3.3 V, the required inductance can be calculated as follows. Be sure to select an appropriate inductor, taking the input voltage range into account.
VIN - VOUT VOUT fOSC IL VIN
IL
=
5 V - 3.3 V 3.3 V 1500kHz 0.6A 5 V
(2)
0
= 1.25H
T=
1 fOSC
V TON = OUT VIN
Figure 2 Inductor Current Waveform
Setting the Output Voltage
A resistive voltage divider is connected as shown in Figure 3 to set the output voltage; it is given by Equation 3 based on the reference voltage of the error amplifier (0.8 V typ.), which is connected to the Feedback pin, VFB. RFB1 should be up to 30 k or so, because an extremely large-value RFB1 incurs a delay due to parasitic capacitance at the VFB pin. It is recommended that resistors with a precision of 1% or higher be used for RFB1 and RFB2.
VOUT RFB2 RFB1
VOUT
R = VFB 1 + FB1 R FB2 R = 0.8 V 1 + FB1 ******** (3) R FB2
LX VFB
Figure 3 Output Voltage Setting Resistors
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IL
L=
TCV7104FN
Output Filter Capacitor Selection
Use a low-ESR electrolytic or ceramic capacitor as the output filter capacitor. Since a capacitor is generally sensitive to temperature, choose one with excellent temperature characteristics. As a rule of thumb, its capacitance should be 10 F or greater for applications. The capacitance should be set to an optimal value that meets the system's ripple voltage requirement and transient load response characteristics. The phase margin tends to decrease as the output voltage is getting low. Enlarge a capacitance for output flatness when phase margin is insufficient, or the transient load response characteristics cannot be satisfied. Since the ceramic capacitor has a very low ESR value, it helps reduce the output ripple voltage; however, because the ceramic capacitor provides less phase margin, it should be thoroughly evaluated.
Soft-Start Feature
The TCV7104FN has a soft-start feature. If the SS pin is left open, the soft-start time, tSS, for VOUT defaults to 1 ms (typ.) internally. The soft-start time can be extended by adding an external capacitor (CSS) between the SS and SGND pins. The soft-start time can be calculated as follows: tSS2: Soft-start time (in seconds) when an external capacitor is connected between SS and SGND. CSS: Capacitor value (F)
t SS2 = 0.1 C SS **************************** (4)
The soft-start feature is activated when the TCV7104FN exits the undervoltage lockout (UVLO) state after power-up and when the voltage at the EN pin has changed from logic low to logic high.
Overcurrent ProtectionOCP
The TCV7104FN has maximum current limiting. The TCV7104FN limits the ON time of high side switching transistor and decreases output voltage when the peak value of the LX terminal current exceeds switching terminal peak current limitation ILIM=3.2A(typ.).
Undervoltage Lockout (UVLO)
The TCV7104FN has undervoltage lockout (UVLO) protection circuitry. The TCV7104FN does not provide output voltage (VOUT) until the input voltage (VIN2) has reached VUVR (2.55 V typ.). UVLO has hysteresis of 0.1 V (typ.). After the switch turns on, if VIN2 drops below VUV (2.45 V typ.), UVLO shuts off the switch at VOUT.
Undervoltage lockout recovery voltage VUVR VIN2 GND Switching operation starts VOUT GND Switching operation stops Soft start Undervoltage lockout detection voltage VUV Hysteresis: VUV
Figure 4 Undervoltage Lockout Operation
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Thermal Shutdown (TSD)
The TCV7104FN provides thermal shutdown. When the junction temperature continues to rise and reaches TSD (150C typ.), the TCV7104FN goes into thermal shutdown and shuts off the power supply. TSD has a hysteresis of about 15C (typ.). The device is enabled again when the junction temperature has dropped by approximately 15C from the TSD trip point. The device resumes the power supply when the soft-start circuit is activated upon recovery from TSD state. Thermal shutdown is intended to protect the device against abnormal system conditions. It should be ensured that the TSD circuit will not be activated during normal operation of the system.
TSD detection temperature: TSD
Recovery from TSD Hysteresis: TSD
Tj 0
Switching operation starts VOUT GND Switching operation stops Soft start
Figure 5 Thermal Shutdown Operation
Usage Precautions
* The input voltage, output voltage, output current and temperature conditions should be considered when selecting capacitors, inductors and resistors. These components should be evaluated on an actual system prototype for best selection. External components such as capacitors, inductors and resistors should be placed as close to the TCV7104FN as possible. The TCV7104FN has an ESD diode between the EN and VIN2 pins. The voltage between these pins should satisfy VEN - VIN2 < 0.3 V. CIN should be connected as close to the PGND and VIN1 pins as possible. Operation might become unstable due to board layout. In that case, add a decoupling capacitor (CC) of 0.1 F to 1 F between the SGND and VIN2 pins. The minimum programmable output voltage is 0.8 V (typ.). If the difference between the input and output voltages is small, the output voltage might not be regulated accurately and fluctuate significantly. When TCV7104FN is in operation, a negative voltage is generated since regeneration current flows through the switch pin (LX). Even if the current flows through the low side parasitic diode during the dead time of switching transistor, operation is undisturbed so an external flywheel diode is unnecessary. If there is the possibility of an external negative voltage generation, add a diode for protection. SGND pin is connected with the back of IC chip and serves as the heat radiation pin. Secure the area of a GND pattern as large as possible for greater of heat radiation. The overcurrent protection circuits in the Product are designed to temporarily protect Product from minor overcurrent of brief duration. When the overcurrent protective function in the Product activates, immediately cease application of overcurrent to Product. Improper usage of Product, such as application of current to Product exceeding the absolute maximum ratings, could cause the overcurrent protection circuit not to operate properly and/or damage Product permanently even before the protection circuit starts to operate. The thermal shutdown circuits in the Product are designed to temporarily protect Product from minor overheating of brief duration. When the overheating protective function in the Product activates, immediately correct the overheating situation. Improper usage of Product, such as the application of heat to Product exceeding the absolute maximum ratings, could cause the overheating protection circuit not to operate properly and/or damage Product permanently even before the protection circuit starts to operate.
* * * * *
* *
*
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Typical Performance Characteristics
IIN - VIN
600 600
IIN - Tj
(A)
500
(A) Operating current IIN
500
IIN
400
400
Operating current
300
300
200
200
100
100
0 0 1 2 3
VEN = VFB = VIN Tj = 25C 4 5 6
VEN = VIN = 5 V VFB = VIN -25 0 25 50 75 100 125
0 -50
Input voltage
VIN
(V)
Junction temperature
Tj
(C)
IIN - Tj
600 2
VIH(EN), VIL(EN) - Tj
VIN = 5 V
(A)
500
EN threshold voltage VIH(EN), VIL(EN) (V)
1.5 VIH(EN)
IIN Operating current
400
300
1
VIL(EN)
200
0.5
100
VEN = VIN = 3.3 V VFB = VIN 0 -25 0 25 50 75 100 125 -50 -25 0 25 50 75 100 125
0 -50
Junction temperature
Tj
(C)
Junction temperature
Tj
(C)
VIH(EN), VIL(EN) - Tj
2 VIN = 3.3 V 20
IIH(EN) - VEN
VIN = 5.5 V Tj = 25C 16
EN threshold voltage VIH(EN), VIL(EN) (V)
1.5 VIH(EN) 1 VIL(EN) 0.5
EN input current IIH(EN) (A)
125
12
8
4
0 -50 -25 0 25 50 75 100
0
0
1
2
3
4
5
6
Junction temperature
Tj
(C)
EN input voltage
VEN
(V)
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IIH(EN) - Tj
14 VIN = 5 V VEN = 5 V 12 2.6
VUV, VUVR - Tj
Under voltage lockout voltageVUV,VUVR (V)
Recovery voltage VUVR 2.5
EN input current IIH(EN) (A)
10
2.4
Detection voltage VUV
8
VEN = VIN 6 -50 -25 0 25 50 75 100 125 2.3 -50 -25 0 25 50 75 100 125
Junction temperature
Tj
(C)
Junction temperature
Tj
(C)
VOUT - VIN
2 0.84 VEN = VIN VOUT = 1.2 V Tj = 25C
VFB - VIN
VEN = VIN VOUT = 1.2 V Tj = 25C 0.82
1.5
VOUT
VFB input voltage
VFB (V)
(V)
Output voltage
1
0.8
0.5
0.78
0 2.2 2.3 2.4 2.5 2.6 2.7
0.76
2
3
4
5
6
Input voltage
VIN
(V)
Input voltage
VIN
(V)
VFB - Tj
0.82 VIN = 5 V VOUT = 1.2 V VEN = VIN 30
VOUT - VIN
VOUT = 1.2 V , IOUT = 0 mA L =1.5 H , COUT = 10 F Ta = 25C
VFB (V)
(mV) VOUT Output voltage
20
0.81 10
VFB input voltage
0.8
0
-10
0.79
-20
0.78 -50 -25 0 25 50 75 100 125
-30 2 3 4 5 6
Junction temperature
Tj
(C)
Input voltage
VIN
(V)
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fOSC - VIN
1800 1800
fOSC - Tj
(kHz)
Tj = 25C VIN = 5 V 1700
(kHz) fOSC
1700
1600
fOSC Oscillation frequency
2 3 4 5 6
1600
Oscillation frequency
1500
1500
1400
1400
1300
1300
1200
1200 -50 -25 0 25 50 75 100 125
Input voltage
VIN
(V)
Junction temperature
Tj
(C)
ISS - VIN
0 0 Tj = 25C
ISS - Tj
VIN = 5 V
External soft-start charge current ISS (A)
-4
External soft-start charge current ISS (A)
-2
-2 -4
-6 -8 -10 -12 -14 2 3 4 5 6
-6 -8 -10 -12 -14 -50 -25 0 25 50 75 100 125
Input voltage,
VIN
(V)
Junction temperature
Tj
(C)
ISS - Tj
0
External soft-start charge current ISS (A)
VIN = 3.3 V -2 -4
-6 -8
-10 -12 -14 -50 -25 0 25 50 75 100 125
Junction temperature
Tj
(C)
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VOUT - IOUT
30 VIN = 5 V , VOUT = 3.3 V L = 1.5 H , COUT =10 F Ta = 25C
15
VOUT - IOUT
VIN = 5 V , VOUT = 1.2 V L = 1.5H , COUT =10 F Ta = 25C
(mV)
20
(mV) VOUT Output voltage
10
VOUT
10
5
0
0
Output voltage
-10
-5
-20
-10
-30 0 0.5 1 1.5 2
-15 0 0.5 1 1.5 2
Output current
IOUT
(A)
Output current
IOUT
(A)
VOUT - IOUT
15 VIN =3.3V , VOUT =1.2 V L = 1.5 H , COUT =10 F Ta = 25C
100
- IOUT
(mV)
10
90
VOUT
5
(%) Efficiency
80 70 60
0
Output voltage
-5
-10 50 0 0.5 1 1.5 2 0 0.5 1
VIN = 5 V , VOUT = 1.2V L = 1.5 H , COUT =10 F Ta = 25C 1.5 2
-15
Output current
IOUT
(A)
Output current
IOUT
(A)
- IOUT
100 100
- IOUT
90
90
(%)
(%) Efficiency
80 80 70 70 60 VIN = 5 V , VOUT = 3.3V L = 1.5 H , COUT = 10 F Ta = 25C 0 0.5 1 1.5 2 60 VIN =3.3 V , VOUT = 1.2V L = 1.5H , COUT =10 F Ta = 25C 0 0.5 1 1.5 2 50 50
Efficiency
Output current
IOUT
(A)
Output current
IOUT
(A)
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Overcurrent Protection
2 VIN = 3.3V , VOUT = 1.2V L = 1.5H , COUT = 10 F Ta = 25C 1.5 2 VIN = 5V , VOUT = 1.2V L = 1.5H , COUT = 10 F Ta = 25C 1.5
Overcurrent Protection
(V)
VOUT
VOUT Output voltage
(V)
1 0.5 0 1
Output voltage
1
0.5
0 1 2 3 4
2
3
4
Output current
IOUT
(A)
Output current
IOUT
(A)
Overcurrent Protection
4 4
Overcurrent Protection
(V)
VOUT
Output voltage
2
Output voltage
VOUT
VIN = 3.8V , VOUT = 3.3 V L = 1.5H , COUT = 10 F Ta = 25C
3
(V)
3 2 1 1 VIN = 5 V , VOUT = 3.3 V L = 1.5H , COUT = 10 F Ta = 25C 1 2 3 4 0 1 2 3 4 0
Output current
IOUT
(A)
Output current
IOUT
(A)
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Startup Characteristics (Internal Soft-Start Time)
VIN = 5 V VOUT = 3.3 V Ta = 25C L = 1.5H COUT = 10 F
Startup Characteristics (CSS = 0.1 F)
VIN = 5 V VOUT = 3.3 V Ta = 25C L = 1.5 H COUT = 10 F
Output voltage: VOUT (1V/div)
Output voltage: VOUT (1V/div)
EN voltage: VEN:LH
EN voltage: VEN:LH
200 s/div
2 ms/div
Load Response Characteristics
VIN =5 V , VOUT = 3.3 V , Ta = 25C L = 1.5 H , COUT = 10 F
Load Response Characteristics
VIN =5 V , VOUT = 1.2 V , Ta = 25C L = 1.5 H , COUT = 10 F
Output voltage: VOUT (200 mV/div) Output voltage: VOUT (100 mV/div)
Output current: IOUT : (10mA2A10mA)
Output current: IOUT : (10mA2A10mA)
100 s/div
100 s/div
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Package Dimensions
Weight: 0.017 g (typ.)
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RESTRICTIONS ON PRODUCT USE
* Toshiba Corporation, and its subsidiaries and affiliates (collectively "TOSHIBA"), reserve the right to make changes to the information in this document, and related hardware, software and systems (collectively "Product") without notice. * This document and any information herein may not be reproduced without prior written permission from TOSHIBA. Even with TOSHIBA's written permission, reproduction is permissible only if reproduction is without alteration/omission. * Though TOSHIBA works continually to improve Product's quality and reliability, Product can malfunction or fail. Customers are responsible for complying with safety standards and for providing adequate designs and safeguards for their hardware, software and systems which minimize risk and avoid situations in which a malfunction or failure of Product could cause loss of human life, bodily injury or damage to property, including data loss or corruption. Before customers use the Product, create designs including the Product, or incorporate the Product into their own applications, customers must also refer to and comply with (a) the latest versions of all relevant TOSHIBA information, including without limitation, this document, the specifications, the data sheets and application notes for Product and the precautions and conditions set forth in the "TOSHIBA Semiconductor Reliability Handbook" and (b) the instructions for the application with which the Product will be used with or for. Customers are solely responsible for all aspects of their own product design or applications, including but not limited to (a) determining the appropriateness of the use of this Product in such design or applications; (b) evaluating and determining the applicability of any information contained in this document, or in charts, diagrams, programs, algorithms, sample application circuits, or any other referenced documents; and (c) validating all operating parameters for such designs and applications. TOSHIBA ASSUMES NO LIABILITY FOR CUSTOMERS' PRODUCT DESIGN OR APPLICATIONS. * Product is intended for use in general electronics applications (e.g., computers, personal equipment, office equipment, measuring equipment, industrial robots and home electronics appliances) or for specific applications as expressly stated in this document. Product is neither intended nor warranted for use in equipment or systems that require extraordinarily high levels of quality and/or reliability and/or a malfunction or failure of which may cause loss of human life, bodily injury, serious property damage or serious public impact ("Unintended Use"). Unintended Use includes, without limitation, equipment used in nuclear facilities, equipment used in the aerospace industry, medical equipment, equipment used for automobiles, trains, ships and other transportation, traffic signaling equipment, equipment used to control combustions or explosions, safety devices, elevators and escalators, devices related to electric power, and equipment used in finance-related fields. Do not use Product for Unintended Use unless specifically permitted in this document. * Do not disassemble, analyze, reverse-engineer, alter, modify, translate or copy Product, whether in whole or in part. * Product shall not be used for or incorporated into any products or systems whose manufacture, use, or sale is prohibited under any applicable laws or regulations. * The information contained herein is presented only as guidance for Product use. No responsibility is assumed by TOSHIBA for any infringement of patents or any other intellectual property rights of third parties that may result from the use of Product. No license to any intellectual property right is granted by this document, whether express or implied, by estoppel or otherwise. * ABSENT A WRITTEN SIGNED AGREEMENT, EXCEPT AS PROVIDED IN THE RELEVANT TERMS AND CONDITIONS OF SALE FOR PRODUCT, AND TO THE MAXIMUM EXTENT ALLOWABLE BY LAW, TOSHIBA (1) ASSUMES NO LIABILITY WHATSOEVER, INCLUDING WITHOUT LIMITATION, INDIRECT, CONSEQUENTIAL, SPECIAL, OR INCIDENTAL DAMAGES OR LOSS, INCLUDING WITHOUT LIMITATION, LOSS OF PROFITS, LOSS OF OPPORTUNITIES, BUSINESS INTERRUPTION AND LOSS OF DATA, AND (2) DISCLAIMS ANY AND ALL EXPRESS OR IMPLIED WARRANTIES AND CONDITIONS RELATED TO SALE, USE OF PRODUCT, OR INFORMATION, INCLUDING WARRANTIES OR CONDITIONS OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, ACCURACY OF INFORMATION, OR NONINFRINGEMENT. * Do not use or otherwise make available Product or related software or technology for any military purposes, including without limitation, for the design, development, use, stockpiling or manufacturing of nuclear, chemical, or biological weapons or missile technology products (mass destruction weapons). Product and related software and technology may be controlled under the Japanese Foreign Exchange and Foreign Trade Law and the U.S. Export Administration Regulations. Export and re-export of Product or related software or technology are strictly prohibited except in compliance with all applicable export laws and regulations. * Please contact your TOSHIBA sales representative for details as to environmental matters such as the RoHS compatibility of Product. Please use Product in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled substances, including without limitation, the EU RoHS Directive. TOSHIBA assumes no liability for damages or losses occurring as a result of noncompliance with applicable laws and regulations.
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2010-03-23

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