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CAT6217
150mA CMOS LDO Regulator
FEATURES
Guaranteed 150mA output current Low dropout voltage of 90mV typical at 150mA Stable with 1F ceramic output capacitor External 10nF bypass capacitor for low noise Quick-start feature No-load ground current of 55A typical Full-load ground current of 80A typical 1.0% output voltage initial accuracy 2.0% accuracy over temperature "Zero" current shutdown mode Current limit and Under voltage lockout Thermal protection Thin SOT23-5 package
DESCRIPTION
The CAT6217 is a 150mA CMOS low dropout regulator that provides fast response time during load current and line voltage changes. The quick-start feature allows the use of an external bypass capacitor to reduce the overall output noise without affecting the turn-on time of just 150s. With zero shutdown current and low ground current of 55A typical, the CAT6217 is ideal for batteryoperated devices with supply voltages from 2.3V to 5.5V. An internal under voltage lockout circuit disables the output at supply voltages under 2.1V typical. The CAT6217 offers 1% initial accuracy and low dropout voltage, 90mV typical at 150mA. Stable operation is provided with a 1F ceramic capacitor, reducing required board space and component cost. Other features include output short-circuit current limit and thermal protection. The device is available in the low profile (1mm max height) 5-lead thin SOT23 package.
APPLICATIONS
Cellular phones Battery-powered devices Consumer Electronics
For Ordering Information details, see page 9.
PIN CONFIGURATION
TSOT-23 5-Lead (1mm height)
TYPICAL APPLICATION CIRCUIT
VIN 1 GND 2 EN 3
Top View
5 VOUT
VIN 2.3V to 5.5V OFF ON
CIN 1F
VIN
VOUT
CAT6217 EN BYP GND
VOUT COUT 1F
4 BYP
CBYP (Optional) 10nF
(c) 2007 Catalyst Semiconductor, Inc. Characteristics subject to change without notice
1
Doc. No. MD-4011 Rev. A
CAT6217 PIN DESCRIPTIONS
Pin # Name Function 1 VIN Supply voltage input. 2 GND Ground reference. Enable input (active high); a 2.5M 3 EN pull-down resistor is provided. Optional bypass capacitor connection 4 BYP for noise reduction and PSRR enhancing. 5 VOUT LDO Output Voltage.
BLOCK DIAGRAM
VIN VIN EN LDO VOUT VOUT
BYP
Reference
Shutdown Switch
GND
Figure 2. CAT6217 Functional Block Diagram
PIN FUNCTION
VIN is the supply pin for the LDO. A small 1F ceramic bypass capacitor is required between the VIN pin and ground near the device. When using longer connections to the power supply, CIN value can be increased without limit. The operating input voltage range is from 2.3V to 5.5V. EN is the enable control logic (active high) for the regulator output. It has a 2.5M pull-down resistor, which assures that if EN pin is left open, the circuit is disabled. VOUT is the LDO regulator output. A small 1F ceramic bypass capacitor is required between the VOUT pin and ground for stability. For better transient response, its value can be increased to 4.7F. The capacitor should be located near the device. ESR domain is 5m to 500m. VOUT can deliver a maximum guaranteed current of 150mA. A 250 internal shutdown switch discharges the output capacitor in the no-load condition. GND is the ground reference for the LDO. The pin must be connected to the ground plane on the PCB. BYP is the reference bypass pin. An optional 0.01F capacitor can be connected between BYP pin and GND to reduce the output noise and enhance the PSRR at high frequency.
ABSOLUTE MAXIMUM RATINGS (1)
Parameter VIN VEN, VOUT Junction Temperature, TJ Power Dissipation, PD Storage Temperature Range, TS Lead Temperature (soldering, 5 sec.) ESD Rating (Human Body Model) Rating 0 to 6.5 -0.3 to VIN+0.3 +150 Internally Limited (2) -65 to +150 260 3 Unit V V C mW C C kV
RECOMMENDED OPERATING CONDITIONS (3)
Parameter VIN VEN Junction Temperature Range, TJ Package Thermal Resistance (SOT23-5), JA Range 2.3 to 5.5 0 to VIN -40 to +125 235 Unit V V C C/W
Typical application circuit with external components is shown on page 1.
Notes: (1) Exceeding maximum rating may damage the device (2) The maximum allowable power dissipation at any TA (ambient temperature) is PDmax = (TJmax - TA)/JA. Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown. (3) The device is not guaranteed to work outside its operating rating.
Doc. No. MD-4011 Rev. A
2
(c) 2007 Catalyst Semiconductor, Inc. Characteristics subject to change without notice
CAT6217 ELECTRICAL OPERATING CHARACTERISTICS (1)
VIN = VOUT + 1.0V, VEN = High, IOUT = 100A, CIN = COUT = 1F, ambient temperature of 25C (over recommended operating conditions unless specified otherwise). Bold numbers apply for the entire junction temperature range. Symbol Parameter VOUT-ACC TCOUT VR-LINE VR-LOAD VDROP Output Voltage Accuracy Output Voltage Temp. Coefficient Line Regulation Load Regulation Dropout Voltage (2) VIN = VOUT + 1.0V to 5.5V IOUT = 100A to 150 mA IOUT = 150mA IOUT = 0A IOUT = 150mA IGND-SD PSRR ISC TON eN ROUT-SH REN VUVLO ESR VHI VLO IEN Shutdown Ground Current Power Supply Rejection Ratio Output short circuit current limit Turn-On Time Output Noise Voltage
(3)
Conditions Initial accuracy
Min -1.0 -2.0
Typ
Max +1.0 +2.0
Unit % ppm/C
40 -0.2 -0.4 0.6 90 55 80 1 2 64 54 350 150 45 250 2.5 2.1 5 VIN = 2.3 to 5.5V VIN = 2.3 to 5.5V VEN = 0.4V VEN = VIN 0.15 1.5 160 10 1.8 0.4 1 4 500 0.1 +0.2 +0.4 1.0 1.3 125 150 75 90
%/V % mV
IGND
Ground Current
A
VEN < 0.4V f = 1kHz, CBYP = 10nF f = 20kHz, CBYP = 10nF VOUT = 0V CBYP = 10nF BW = 10Hz to 100kHz
A dB mA s Vrms M V m V V A
Shutdown Switch Resistance Enable pull-down resistor Under-voltage lock out (UVLO) threshold COUT equivalent series resistance Logic High Level Logic Low Level Enable Input Current
Enable Input
Thermal Protection TSD THYS Thermal Shutdown Thermal Hysteresis C C
Notes: (1 Specification for 2.85V output version unless specified otherwise. (2) Dropout voltage is defined as the input-to-output differential at which the output voltage drops 2% below its nominal value measured at 1V differential. During test, the input voltage stays always above the minimum 2.3V. (3) Specification for 1.8V output version. (c) 2007 Catalyst Semiconductor, Inc. 3
Doc. No. MD-4011 Rev. A
Characteristics subject to change without notice
CAT6217 TYPICAL CHARACTERISTICS (shown for 2.85V output version)
VIN = 3.85V, IOUT = 100A, CIN = COUT = 1F, CBYP = 10nF, TA = 25C unless otherwise specified. Dropout Characteristics
3.0 OUTPUT VOLTAGE [V] 2.5 150mA 2.0 1.5 1.0 0.5 0.0 0.0 1.0 2.0 3.0 4.0 5.0 INPUT VOLTAGE [V] 6.0 100A
Line Regulation
2.87 OUTPUT VOLTAGE [V] 2.86 2.85 2.84 2.83 2.82 2.5 3.0 3.5 4.0 4.5 5.0 INPUT VOLTAGE [V] 5.5
Load Regulation
2.95 OUTPUT VOLTAGE [V]
Output Voltage vs. Temperature
2.87 OUTPUT VOLTAGE [V] 2.86 2.85 2.84 2.83 2.82
2.90
2.85
2.80
2.75 0 25 50 75 100 125 150 OUTPUT LOAD CURRENT [mA]
-40
-10 20 50 80 110 140 TEMPERATURE [C]
Ground Current vs. Load Current
100 GROUND CURRENT [A] 90 80 70 60 50 0 25 50 75 100 125 150 OUTPUT LOAD CURRENT [mA]
Ground Current vs. Temperature
65 GROUND CURRENT [A]
60
55
50
45 -40 -10 20 50 80 110 140 TEMPERATURE [C]
Doc. No. MD-4011 Rev. A
4
(c) 2007 Catalyst Semiconductor, Inc. Characteristics subject to change without notice
CAT6217 TYPICAL CHARACTERISTICS (shown for 2.85V output option)
VIN = 3.85V, IOUT = 100A, CIN = COUT = 1F, CBYP = 10nF, TA = 25C unless otherwise specified. Output Short-Circuit Current Limit
600
GROUND CURRENT [A]
Ground Current vs. Input Voltage
70 60 50 40 30 20 10 0
CURRENT LIMIT [mA] .
500 400 300 200 100 VOUT = 0V 0 0.0 1.0 2.0 3.0 4.0 5.0 INPUT VOLTAGE [V] 6.0
0.0
1.0
2.0 3.0 4.0 5.0 INPUT VOLTAGE [V]
6.0
Dropout vs. Temperature (150mA Load)
200 DROPOUT VOLTAGE [mV]
DROPOUT VOLTAGE [mV] 120
Dropout vs. Load Current
150
90
100
60
50
30
0 -40 -10 20 50 80 110 140 TEMPERATURE [C]
0 0 30 60 90 120 150 OUTPUT LOAD CURRENT [mA]
Enable Threshold vs. Input Voltage
1.6 ENABLE THRESHOLD [V]
PSRR vs. Frequency (10mA Load)
80 70 CBY P = 10nF
1.2
60 PSRR [dB] 50 40 30 20 10 CBY P = 0
0.8
0.4
0.0 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 INPUT VOLTAGE [V]
0 0.01
0.1 1 10 FREQUENCY [kHz]
100
(c) 2007 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
5
Doc. No. MD-4011 Rev. A
CAT6217 TYPICAL CHARACTERISTICS (shown for 2.85V output option)
VIN = 3.85V, IOUT = 100A, CIN = COUT = 1F, CBYP = 10nF, TA = 25C unless otherwise specified. PSRR (30mA Load)
70 60 50 PSRR [dB]
PSRR [dB]
PSRR (150mA Load)
70 1kHz 10kHz
1kHz 10kHz
60 50 40 30 20 10 0
40 30 20 10 0 0 100 200 300 400 VIN - VOUT [mV] 500 100kHz
100kHz
0
100
200 300 400 VIN - VOUT [mV]
500
Doc. No. MD-4011 Rev. A
6
(c) 2007 Catalyst Semiconductor, Inc. Characteristics subject to change without notice
CAT6217 TRANSIENT CHARACTERISTICS (shown for 2.85V output option)
VIN = 3.85V, IOUT = 100A, CIN = COUT = 1F, CBYP = 10nF, TA = 25C unless otherwise specified.
Note: All transient characteristics are generated using the evaluation board CAT621XEVAL1.
Enable Turn-On (100A Load)
Enable Turn-Off (100A Load)
Enable Turn-On (150mA Load)
Enable Turn-Off (150mA Load)
Line Transient Response (3.85V to 4.85V)
Load Transient Response (0.1mA to 150mA)
(c) 2007 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
7
Doc. No. MD-4011 Rev. A
CAT6217 PACKAGE OUTLINES
5-LEAD TSOT-23
(1)(2)
e
e
SYMBOL A A1 A2
E E1
MIN -- 0.01 0.80 0.30 0.12
NOM -- 0.05 0.87 -- 0.15 2.90 BSC 2.80 BSC 1.60 BSC 0.95 BSC 1.90 BSC
MAX 1.00 0.10 0.90 0.45 0.20
b c D E E1
e1
e e1 L L1 L2 0 0.30
0.40 0.60 REF 0.25 BSC
0.50
8
D GAUGE PLANE L2 b A1 L L1
A2
A
c
2HFor current Tape and Reel information, download the PDF file from:
Notes: (1) All dimensions are in millimeters, angles in degrees. (2) Refer JEDEC MO-193.
Doc. No. MD-4011 Rev. A
8
(c) 2007 Catalyst Semiconductor, Inc. Characteristics subject to change without notice
CAT6217 EXAMPLE OF ORDERING INFORMATION
(1)(2)(3)(5)
Prefix
CAT
Device #
6217
Suffix
-285 TD -G T3
Company ID Product Number 6217
VOUT Voltage (4) 150: 1.50V 180: 1.80V 250: 2.50V 280: 2.80V 285: 2.85V 330: 3.30V
Package TD: TSOT-23
Lead Finish G: NiPdAu Tape & Reel T: Tape & Reel 3: 3000 Units/Reel
Ordering Number CAT6217-150TD-GT3 CAT6217-180TD-GT3 CAT6217-250TD-GT3 CAT6217-280TD-GT3 CAT6217-285TD-GT3 CAT6217-330TD-GT3 (4)
VOUT Voltage 1.50V 1.80V 2.50V 2.80V 2.85V 3.30V
Package TSOT-23 TSOT-23 TSOT-23 TSOT-23 TSOT-23 TSOT-23
Quantity per Reel 3000 3000 3000 3000 3000 3000
Notes: (1) All packages are RoHS-compliant (Lead-free, Halogen-free). (2) The standard finish is NiPdAu. (3) The device used in the above example is a CAT6217-285TD-GT3 (VOUT = 2.85V, in an TSOT-23 package, NiPdAu, Tape and Reel, 3000 units). (4) Standard voltages are 1.50V, 1.80V, 2.50V, 2.80V, and 2.85V. For other voltage options, please contact your nearest Catalyst Semiconductor Sales office. (5) Top marking for CAT6217 is RT. (c) 2007 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
9
Doc. No. MD-4011 Rev. A
REVISION HISTORY
Date 06/21/2007 Rev. A Reason Preliminary Revision
Copyrights, Trademarks and Patents Trademarks and registered trademarks of Catalyst Semiconductor include each of the following: Beyond MemoryTM, DPPTM, EZDimTM, LDDTM, MiniPotTM and Quad-ModeTM Catalyst Semiconductor has been issued U.S. and foreign patents and has patent applications pending that protect its products. CATALYST SEMICONDUCTOR MAKES NO WARRANTY, REPRESENTATION OR GUARANTEE, EXPRESS OR IMPLIED, REGARDING THE SUITABILITY OF ITS PRODUCTS FOR ANY PARTICULAR PURPOSE, NOR THAT THE USE OF ITS PRODUCTS WILL NOT INFRINGE ITS INTELLECTUAL PROPERTY RIGHTS OR THE RIGHTS OF THIRD PARTIES WITH RESPECT TO ANY PARTICULAR USE OR APPLICATION AND SPECIFICALLY DISCLAIMS ANY AND ALL LIABILITY ARISING OUT OF ANY SUCH USE OR APPLICATION, INCLUDING BUT NOT LIMITED TO, CONSEQUENTIAL OR INCIDENTAL DAMAGES. Catalyst Semiconductor products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Catalyst Semiconductor product could create a situation where personal injury or death may occur. Catalyst Semiconductor reserves the right to make changes to or discontinue any product or service described herein without notice. Products with data sheets labeled "Advance Information" or "Preliminary" and other products described herein may not be in production or offered for sale. Catalyst Semiconductor advises customers to obtain the current version of the relevant product information before placing orders. Circuit diagrams illustrate typical semiconductor applications and may not be complete.
Catalyst Semiconductor, Inc. Corporate Headquarters 2975 Stender Way Santa Clara, CA 95054 Phone: 408.542.1000 Fax: 408.542.1200 1Hwww.catsemi.com
Document No: MD-4011 Revision: A Issue date: 06/21/07

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