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NCP4523 CMOS 3CH-LDOs for RF Unit
The NCP4523 Series are multi voltage regulator ICs with high output voltage accuracy, extremely low supply current, low noise, low ON-resistance and high ripple rejection by CMOS process. The NCP4523 Series contain three voltage regulators. Each of these voltage regulators in the NCP4523 Series consists of a voltage reference unit, an error amplifier, resistors for setting output voltage, a current limit circuit and a chip enable circuit. The chip enable function contributes to prolong battery life. Further, regulators in the NCP4523 Series are with low dropout voltage, excellent load transient response and line transient response, thus the NCP4523 series are very suitable for the power supply for hand-held communication equipment. The output voltage of each regulator is fixed with high accuracy by laser trim. Since the package for these ICs is SSOP-8, high density mounting of the ICs on boards is possible.
Features http://onsemi.com MARKING DIAGRAM
8 8 1 SSOP-8 G SUFFIX CASE 487 xxx xyy 1
xxxx = Product Code yy = Lot Number
PIN ASSIGNMENT
VOUT1 VOUT2 VOUT3 GND 1 2 3 4 (Top View) 8 7 6 5 VDD CE1 CE2 CE3
* * * * * * * * *
Ultra-Low Supply Current Low Standby Current Low Dropout Voltage High Ripple Rejection, Typical 70 dB (f = 1.0 kHz) High Output Voltage Accuracy, "2.0% Excellent Load Transient Response and Line Transient Response Small Package 8-Pin SSOP Maximum Input Voltage 6.0 V Pb-Free Package is Available
SSOP-8 ORDERING INFORMATION
See detailed ordering and shipping information in the package dimensions section on page 22 of this data sheet.
Applications
* Power Source for Cellular Phones such as GSM, CDMA and * Power Source for Electrical Appliances such as Cameras, VCRs, *
Camcorders, etc. Power Source for Battery-Powered Equipment Personal Handy-Phone System
DEVICE MARKING INFORMATION
See general marking information in the device marking section on page 22 of this data sheet.
(c) Semiconductor Components Industries, LLC, 2004
1
December, 2004 - Rev. 4
Publication Order Number: NCP4523/D
NCP4523
PIN DESCRIPTION
Pin Number NCP4523G SSOP-8 1 2 3 4 5 6 7 8 Symbol VOUT1 VOUT2 VOUT3 GND CE3 CE2 CE1 VDD Output Pin Output Pin Output Pin Ground Pin Chip Enable Pin Chip Enable Pin Chip Enable Pin Input Pin Description
ABSOLUTE MAXIMUM RATINGS
Rating Input Voltage Input Voltage (CE Pin) Output Voltage Output Current (VOUT1) Output Current (VOUT2) Output Current (VOUT3) Power Dissipation Operating Temperature Range Storage Temperature Range Symbol VIN CE VOUT IOUT1 IOUT2 IOUT3 PD Topt Tstg Value 7.0 -0.3 X VIN + 0.3 -0.3 X VIN + 0.3 200 100 100 300 -40 X 85 -55 X 125 Unit V V V mA mA mA mW C C
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied, damage may occur and reliability may be affected.
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NCP4523
ELECTRICAL CHARACTERISTICS
VR1 (Topt = 25C) Characteristics Output Voltage Output Current Load Regulation Dropout Voltage Supply Current Supply Current (Standby) Line Regulation Ripple Rejection Input Voltage Output Voltage Temperature Coefficient Short Current Limit CE Pull-down Resistance CE Input Voltage "H'' CE Input Voltage "L'' Output Noise Conditions VIN - VOUT = 1.0 V 1.0 mA v IOUT v 30 mA VIN - VOUT = 1.0 V VIN - VOUT = 1.0 V 1.0 mA v IOUT v 80 mA Refer to Electrical Characteristic by Output Voltage (VR1) VIN - VOUT = 1.0 V VIN - VOUT = 1.0 V VCE = GND VOUT + 0.5 V v VIN v 6.0 V IOUT = 30 mA f = 1.0 kHz, sinusoidal 0.5 Vp-p VIN - VOUT = 1.0 V - IOUT = 50 mA -40C v Topt v 85C VOUT = 0 V - - - BW = 10 Hz - 100 kHz Symbol VOUT IOUT DVOUT/DIOUT VDIF ISS Istandby DVOUT/DVIN RR VIN DVOUT/DT ILIM RDN VCEH VCEL en Min 0.98 150 - - - - - - - - - 2.5 1.5 0.00 - Typ - - 12 - 70 0.1 0.05 70 - "100 50 5.0 - - 60 Max 1.02 - 40 - 120 1.0 0.20 - 6.0 - - 10 VIN 0.25 - Unit V mA mV - A A %/V dB V ppm/ C mA MW V V Vrms
ELECTRICAL CHARACTERISTICS BY OUTPUT VOLTAGE (VR1)
Dropout Voltage VDIF (V) Condition Typ 0.35 IOUT = 150 mA 0.30 0.22 Max 0.55 0.45 0.35
Output Voltage VOUT (V) 2.0 v VOUT v 2.4 2.5 v VOUT v 2.7 2.8 v VOUT v 3.3
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NCP4523
ELECTRICAL CHARACTERISTICS
VR2 (Topt = 25C) Characteristics Output Voltage Output Current Load Regulation Dropout Voltage Supply Current Supply Current (Standby) Line Regulation Ripple Rejection Input Voltage Output Voltage Temperature Coefficient Short Current Limit CE Pull-down Resistance CE Input Voltage "H'' CE Input Voltage "L'' Output Noise Conditions VIN - VOUT = 1.0 V 1.0 mA v IOUT v 30 mA VIN - VOUT = 1.0 V VIN - VOUT = 1.0 V 1.0 mA v IOUT v 50 mA Refer to Electrical Characteristic by Output Voltage (VR2) VIN - VOUT = 1.0 V VIN - VOUT = 1.0 V VCE = GND VOUT + 0.5 V v VIN v 6.0 V I v = 30 mA f = 1.0 kHz, sinusoidal 0.5 Vp-p VIN - VOUT = 1.0 V - IOUT = 30 mA -40C v Topt v 85C VOUT = 0 V - - - BW = 10 Hz - 100 kHz Symbol VOUT IOUT DVOUT/DIOUT VDIF ISS Istandby DVOUT/DVIN RR VIN DVOUT/DT ILIM RDN VCEH VCEL en Min 0.98 80 - - - - - - - - - 2.5 1.5 0.00 - Typ - - 12 - 70 0.1 0.05 70 - "100 50 5.0 - - 60 Max 1.02 - 40 - 120 1.0 0.20 - 6.0 - - 10 VIN 0.25 - Unit V mA mV - A A V dB V ppm/ C mA MW V V Vrms
ELECTRICAL CHARACTERISTICS BY OUTPUT VOLTAGE (VR2)
Dropout Voltage VDIF (V) Condition Typ 0.22 IOUT = 80 mA 0.20 0.16 Max 0.38 0.38 0.24
Output Voltage VOUT (V) 2.0 v VOUT v 2.4 2.5 v VOUT v 2.7 2.8 v VOUT v 3.3
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NCP4523
ELECTRICAL CHARACTERISTICS
VR3 (Topt = 25C) Characteristics Output Voltage Output Current Load Regulation Dropout Voltage Supply Current Supply Current (Standby) Line Regulation Ripple Rejection Input Voltage Output Voltage Temperature Coefficient Short Current Limit CE Pull-down Resistance CE Input Voltage "H'' CE Input Voltage "L'' Output Noise Conditions VIN - VOUT = 1.0 V 1.0 mA v 30 mA VIN - VOUT = 1.0 V VIN - VOUT = 1.0 V 1.0 mA v IOUT v 50 mA Refer to Electrical Characteristic by Dropout Voltage (VR3) VOUT + 0.5 V v VIN v 6.0 V IOUT = 30 mA f = 1.0 kHz, sinusoidal 0.5 Vp-p VIN - VOUT = 1.0 V - IOUT = 30 mA -40C v Topt v 85C VOUT = 0 V - BW = 10 Hz - 100 kHz - - - - Symbol VOUT IOUT DVOUT/DIOUT VDIF ISS Istandby DVOUT/DVIN RR VIN DVOUT/DT ILIM RDN VCEH VCEL en Min 0.98 80 - - - - - - - - - 2.5 1.5 0.00 - Typ - - 12 - 70 0.1 0.05 70 - "100 50 5.0 - - 60 Max 1.02 - 40 - 120 1.0 0.20 - 6.0 - - 10 VIN 0.25 - Unit V mA mV - A A %/V dB V ppm/ C mA MW V V Vrms
ELECTRICAL CHARACTERISTICS BY OUTPUT VOLTAGE (VR3)
Dropout Voltage VDIF (V) Condition Typ 0.24 IOUT = 80 mA 0.22 0.16 Max 0.38 0.28 0.24
Output Voltage VOUT (V) 2.0 v VOUT v 2.4 2.5 v VOUT v 2.7 2.8 v VOUT v 3.3
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NCP4523
VOUT1 1 8 VDD
R1_1
- +
Error Amp. Vref
R2_1 Current Limit
7 VOUT2 2
CE1
R1_2
- +
Error Amp. Vref
R2_2 Current Limit
6 VOUT3 3
CE2
R1_3
- +
Error Amp. Vref
R2_3 Current Limit GND 4
5 (Pin numbers of this block diagrams are applied to NCP4523 Series)
CE3
Figure 1. Block Diagram
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NCP4523
VOUT1 1 8 VDD
R1_1
- +
Error Amp. Vref
R2_1 Current Limit
7 VOUT2 2
CE1
R1_2
- +
Error Amp. Vref
R2_2 Current Limit
6 VOUT3 3
CE2
R1_3
- +
Error Amp. Vref
R2_3 Current Limit GND 4
5 (Pin numbers of this block diagrams are applied to NCP4523 Series)
CE3
Figure 2. Operation
Fluctuation of each regulator's output voltage, or VOUT1, 2, 3 is detected individually. Then it is put back to an error amplifier through feedback resistors, or R1_1, R2_1, R1_2, R2_2, R1_3, R2_3 and compared with a reference voltage and compensated for the result and make a constant voltage.
In each regulator, short protection is made with a current limit circuit and standby mode is available by a chip enable circuit.
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NCP4523
IOUT1 C2 IOUT2 C3 IOUT3 C4 4 GND CE3 5 3 VOUT3 CE2 6 C1 2 VOUT2 CE1 7 VIN 1 VOUT1 VDD 8
C1 = 1.0 F C2 = C3 = C4 = 2.2 F
Figure 3. Basic Test Circuit
IOUT1 C2 IOUT2 C3 IOUT3 C4
1 VOUT1
VDD 8 A
2 VOUT2
CE1 7 VIN
3 VOUT3
CE2 6 C1 CE3 5
4 GND
C1 = 1.0 F C2 = C3 = C4 = 2.2 F
Figure 4. Test Circuit for Supply Current
IOUT1 C1 IOUT2 C2 IOUT3 C3
1 VOUT1
VDD 8
2 VOUT2
CE1 7 P.G.
3 VOUT3
CE2 6
4 GND
CE3 5
C1 = C2 = C3 = 2.2 F
Figure 5. Test Circuit for Line Transient Response
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NCP4523
11a 1 VOUT1 C2 2 VOUT2 12b 13a C3 3 VOUT3 C4 13b 4 GND CE3 5 CE2 6 C1 CE1 7 VIN VDD 8
11b 12a
C1 = 1.0 F C2 = C3 = C4 = 2.2 F
Figure 6. Test Circuit for Load Transient Response
IOUT1 C1 IOUT2 C2 IOUT3 C3
1 VOUT1
VDD 8
2 VOUT2
CE1 7 VIN
3 VOUT3
CE2 6
4 GND
CE3 5
C1 = C2 = C3 = 2.2 F
Figure 7. Test Circuit for Ripple Rejection
80 VOUT = 3.0 V SUPPLY CURRENT ISS (mS) 70 60 50 40 30 20 10 0 0 1 2 3
VR3 VR1
VR2
4
5
6
VIN, INPUT VOLTAGE (V)
Figure 8. Supply Current vs Input Voltage
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NCP4523
3.5 VR1 VOUT, OUTPUT VOLTAGE (V) VOUT, OUTPUT VOLTAGE (V) 3.0 5V 2.5 2.0 3.5 V 1.5 VIN = 3.3 V 1.0 0.5 0.0 0 0.1 0.2 0.3 0.4 0.5 0.6 IOUT, OUTPUT CURRENT (A) 4V 3.0 2.5 4V 2.0 3.5 V 1.5 VIN = 3.3 V 1.0 0.5 0.0 0 0.1 0.2 0.3 0.4 0.5 IOUT, OUTPUT CURRENT (A) 3.5 VR2 5V
Figure 9. Output Voltage vs. Output Current
Figure 10. Output Voltage vs. Output Current
3.5 VR3 VOUT, OUTPUT VOLTAGE (V) 5V 2.5 2.0 1.5 VIN = 3.3 V 1.0 0.5 0.0 0 0.1 0.2 0.3 0.4 IOUT, OUTPUT CURRENT (A) 4V 3.5 V VOUT, OUTPUT VOLTAGE (V) 3.0
4.0 VR1 3.0
2.0
IOUT = 1 mA IOUT = 50 mA
1.0 IOUT = 30 mA 0.0 0 1 2 3 4 5 6 VIN, INPUT VOLTAGE (V)
Figure 11. Output Voltage vs. Output Current
Figure 12. Output Voltage vs. Input Voltage
4.0 VR2 VOUT, OUTPUT VOLTAGE (V) VOUT, OUTPUT VOLTAGE (V) 3.0 IOUT = 1 mA 2.0 IOUT = 30 mA
4.0 VR3 3.0 IOUT = 1 mA 2.0 IOUT = 30 mA
1.0
IOUT = 50 mA
1.0 IOUT = 50 mA 0.0 0 1 2 3 4 5 6
0.0 0 1 2 3 4 5 6 VIN, INPUT VOLTAGE (V)
VIN, INPUT VOLTAGE (V)
Figure 13. Output Voltage vs. Input Voltage
Figure 14. Output Voltage vs. Input Voltage
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NCP4523
80 RR, RIPPLE REJECTION (dB) RR, RIPPLE REJECTION (dB) 70 60 50 1 kHz 40 30 20 10 0 3.1 3.2 3.3 VR1 IOUT = 10 mA COUT = Tantal 2.2 F VOUT = 3.0 V 3.4 3.5 100 Hz 10 kHz 80 70 60 50 40 30 20 10 0 3.1 3.2 3.3 3.4 3.5 1 kHz VR1 IOUT = 50 mA COUT = Tantal 2.2 F VOUT = 3.0 V 100 Hz 10 kHz
VIN, INPUT VOLTAGE (V)
VIN, INPUT VOLTAGE (V)
Figure 15. Ripple Rejection vs. Input Voltage (DC Bias)
Figure 16. Ripple Rejection vs. Input Voltage (DC Bias)
80 RR, RIPPLE REJECTION (dB) RR, RIPPLE REJECTION (dB) 70 60 50 40 30 20 10 0 3.1 3.2 3.3 VIN, INPUT VOLTAGE (V) VR2 IOUT = 10 mA COUT = Tantal 2.2 F VOUT = 3.0 V 3.4 3.5 1 kHz 100 Hz 10 kHz
80 70 60 50 40 30 20 10 0 3.1 3.2 3.3 3.4 3.5 1 kHz VR2 IOUT = 50 mA COUT = Tantal 2.2 F VOUT = 3.0 V 100 Hz 10 kHz
VIN, INPUT VOLTAGE (V)
Figure 17. Ripple Rejection vs. Input Voltage (DC Bias)
80 RR, RIPPLE REJECTION (dB) 100 Hz 10 kHz 70 60 50
Figure 18. Ripple Rejection vs. Input Voltage (DC Bias)
80 RR, RIPPLE REJECTION (dB) 70 60 50 40 30 20 10 0 3.1 3.2 3.3 VIN, INPUT VOLTAGE (V) VR3 IOUT = 10 mA COUT = Tantal 2.2 F VOUT = 3.0 V 3.4 3.5
VR3 IOUT = 50 mA COUT = Tantal 2.2 F VOUT = 3.0 V
100 Hz
1 kHz
10 kHz 40 30 20 10 0 3.1 3.2 3.3 3.4 3.5 1 kHz
VIN, INPUT VOLTAGE (V)
Figure 19. Ripple Rejection vs. Input Voltage (DC Bias)
Figure 20. Ripple Rejection vs. Input Voltage (DC Bias)
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NCP4523
3.10 VOUT, OUTPUT VOLTAGE (V) VOUT, OUTPUT VOLTAGE (V) VR1 IOUT = 50 mA 3.05 3.10 VR2 IOUT = 30 mA 3.05
3.00
3.00
2.95
2.95
2.90 -50
0
50
100
2.90 -50
0
50
100
Topt, Topt TEMPERATURE (C)
Topt, Topt TEMPERATURE (C)
Figure 21. Output Voltage vs. Temperature
Figure 22. Output Voltage vs. Temperature
3.10 VOUT, OUTPUT VOLTAGE (V) ISS, SUPPLY CURRENT (A) VR3 IOUT = 10 mA 3.05
100 VR1 VOUT = 3.0 V 80
60
3.00
40
2.95
20
2.90 -50
0
50
100
0 -50
0
50
100
Topt, Topt TEMPERATURE (C)
Topt, Topt TEMPERATURE (C)
Figure 23. Output Voltage vs. Temperature
Figure 24. Supply Current vs. Temperature
100 ISS, SUPPLY CURRENT (A) ISS, SUPPLY CURRENT (A) VR2 VOUT = 3.0 V
100 VR3 VOUT = 3.0 V
80
80
60
60
40
40
20
20
0 -50
0
50
100
0 -50
0
50
100
Topt, Topt TEMPERATURE (C)
Topt, Topt TEMPERATURE (C)
Figure 25. Supply Current vs. Temperature
Figure 26. Supply Current vs. Temperature
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NCP4523
0.25 VDF, DROPOUT VOLTAGE (V) VDF, DROPOUT VOLTAGE (V) VOUT = 3.0 V 0.20 100 mA 0.15 0.25 VR2 VOUT = 3.0 V
0.20
0.15 50 mA 0.10 30 mA 0.05 10 mA
0.10
50 mA 30 mA
0.05 10 mA 0.00 2 3 4 5 Vreg, SET OUTPUT VOLTAGE (V)
0.00 2 3 4 5 Vreg, SET OUTPUT VOLTAGE (V)
Figure 27. Dropout Voltage vs. Set Output Voltage
Figure 28. Dropout Voltage vs. Set Output Voltage
0.25 VDF, DROPOUT VOLTAGE (V) RR, RIPPLE REJECTION (dB) VR3 VOUT = 3.0 V 0.20
80 70 60 10 mA 50 40 30 20 10 0 0.1 VR1 COUT = 0.47 F VOUT = 3.0 V 1 mA 50 mA
0.15 50 mA 0.10 30 mA
0.05
10 mA
0.00 2 3 4 5 Vreg, SET OUTPUT VOLTAGE (V)
1
10
100
FREQUENCY (kHz)
Figure 29. Dropout Voltage vs. Set Output Voltage
80 RR, RIPPLE REJECTION (dB) RR, RIPPLE REJECTION (dB) 70 60 10 mA 50 40 30 20 10 0 0.1 VR1 COUT = 2.2 F VOUT = 3.0 V 1 mA 50 mA 80 70 60 50 40 30 20 10 0 0.1
Figure 30. Ripple Rejection vs. Frequency
50 mA
1 mA 10 mA VR2 COUT = 0.47 F VOUT = 3.0 V
1
10
100
1
10
100
FREQUENCY (kHz)
FREQUENCY (kHz)
Figure 31. Ripple Rejection vs. Frequency
Figure 32. Ripple Rejection vs. Frequency
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NCP4523
80 RR, RIPPLE REJECTION (dB) RR, RIPPLE REJECTION (dB) 70 60 1 mA 50 40 30 20 10 0 0.1 VR2 COUT = 2.2 F VOUT = 3.0 V 10 mA 50 mA 86 50 mA 84 82 80 78 76 74 72 0.01 VR3 COUT = 2.2 F VOUT = 3.0 V 10 mA 1 mA
1
10
100
0.10 FREQUENCY (kHz)
1.00
FREQUENCY (kHz)
Figure 33. Ripple Rejection vs. Frequency
Figure 34. Ripple Rejection vs. Frequency
80 RR, RIPPLE REJECTION (dB) VDF, DROPOUT VOLTAGE (V) 70 60 50 40 30 20 10 0 -50 VR3 COUT = 2.2 F VOUT = 3.0 V 50 mA 1 mA 10 mA
0.30 0.25 0.20 0.15 0.10
VR1 VOUT = 3.0 V 25C
85C
-40C 0.05 0.0
-25
0
25
50
75
100
125
0
50
100
150
FREQUENCY (kHz)
IOUT, OUTPUT CURRENT (mA)
Figure 35. Ripple Rejection vs. Frequency
Figure 36. Dropout Voltage vs. Output Current
0.30 VDF, DROPOUT VOLTAGE (V) 0.25 0.20 0.15 85C 0.10 -40C 0.05 0.0 0 50 100 150 IOUT, OUTPUT CURRENT (mA) VDF, DROPOUT VOLTAGE (V) VR2 VOUT = 3.0 V
0.30 0.25 0.20 0.15 0.10 -40C 0.05 0.0 0 50 100 150 IOUT, OUTPUT CURRENT (mA) 85C VR3 VOUT = 3.0 V 25C
25C
Figure 37. Dropout Voltage vs. Output Current
Figure 38. Dropout Voltage vs. Output Current
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NCP4523
3.02 3.01 OUTPUT VOLTAGE (V) Input Voltage 3.00 2.99 2.98 Output Voltage (VR1) 2.97 2.96 0 10 20 30 40 TIME (s) 50 60 70 COUT = 2.2 F Tantalum IOUT = 50 mA 4.0 3.0 2.0 1.0 0.0 80 6.0 5.0 INPUT VOLTAGE (V) INPUT VOLTAGE (V) INPUT VOLTAGE (V)
Figure 39. Line Transient Response
3.02 3.01 OUTPUT VOLTAGE (V) Input Voltage 3.00 2.99 2.98 2.97 2.96 0 10 20 30 40 TIME (s) 50 60 70 Output Voltage (VR1) COUT = 2.2 F Tantalum IOUT = 30 mA
6.0 5.0 4.0 3.0 2.0 1.0 0.0 80
Figure 40. Line Transient Response
3.02 3.01 OUTPUT VOLTAGE (V) Input Voltage 3.00 2.99 2.98 2.97 2.96 0 10 20 30 40 TIME (s) 50 60 70
6.0 5.0 4.0 3.0 2.0 COUT = 2.2 F Tantalum IOUT = 10 mA 1.0 0.0 80
Output Voltage (VR1)
Figure 41. Line Transient Response
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3.02 3.01 OUTPUT VOLTAGE (V) Input Voltage 3.00 2.99 2.98 Output Voltage (VR1) 2.97 2.96 0 10 20 30 40 TIME (s) 50 60 70 4.0 3.0 COUT = 0.47 F Tantalum 2.0 IOUT = 50 mA 1.0 0.0 80 6.0 5.0 INPUT VOLTAGE (V) INPUT VOLTAGE (V) INPUT VOLTAGE (V)
Figure 42. Line Transient Response
3.02 3.01 OUTPUT VOLTAGE (V) Input Voltage 3.00 2.99 2.98 2.97 2.96 0 10 20 30 Output Voltage (VR1)
6.0 5.0 4.0 3.0 2.0 COUT = 0.47 F Tantalum 1.0 IOUT = 30 mA 0.0 40 50 60 70 80 TIME (s)
Figure 43. Line Transient Response
3.02 3.01 OUTPUT VOLTAGE (V) Input Voltage 3.00 2.99 2.98 2.97 2.96 0 10 20 30
6.0 5.0 4.0 3.0 2.0 COUT = 0.47 F Tantalum 1.0 IOUT = 10 mA 0.0 40 50 60 70 80 TIME (s)
Output Voltage (VR1)
Figure 44. Line Transient Response
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NCP4523
3.02 3.01 OUTPUT VOLTAGE (V) Input Voltage 3.00 2.99 2.98 Output Voltage (VR1) 2.97 2.96 0 10 20 30 40 TIME (s) 50 60 70 1.0 0.0 80 4.0 COUT = Ceramic 2.2 F and ESR 1.0 W 3.0 IOUT = 50 mA 2.0 6.0 5.0 INPUT VOLTAGE (V) INPUT VOLTAGE (V) INPUT VOLTAGE (V)
Figure 45. Line Transient Response
3.02 3.01 OUTPUT VOLTAGE (V) Input Voltage 3.00 2.99 2.98 2.97 2.96 0 10 20 30 40 TIME (s) 50 60 70 Output Voltage (VR1)
6.0 5.0 4.0 3.0 2.0
COUT = Ceramic 2.2 F and ESR 1.0 W 1.0 IOUT = 30 mA 0.0 80
Figure 46. Line Transient Response
3.02 3.01 OUTPUT VOLTAGE (V) Input Voltage 3.00 2.99 2.98 2.97 2.96 0 10 20 30 40 TIME (s) 50 60 70 Output Voltage (VR1) COUT = Ceramic 2.2 F and ESR 1.0 W IOUT = 10 mA
6.0 5.0 4.0 3.0 2.0 1.0 0.0 80
Figure 47. Line Transient Response
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NCP4523
COUT = 2.2 F + 1 3.35 3.30 3.25 3.20 3.15 3.10 VOUT, OUTPUT VOLTAGE (V) 3.05 3.00 2.95 2.90 3.05 3.00 2.95 2.90 3.05 3.00 2.95 2.90 2.85 2.80 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 IOUT3 = 10 mA VOUT3 IOUT2 = 30 mA VOUT2 VOUT1 0 IOUT1 50 100 IOUT, OUTPUT CURRENT (mA) 3.40 150
t, TIME (s)
Figure 48. Load Transient Response
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NCP4523
COUT = 2.2 F + 1 3.40 IOUT, OUTPUT CURRENT (mA) 3.35 3.30 3.25 3.20 3.15 3.10 VOUT, OUTPUT VOLTAGE (V) 3.05 3.00 2.95 2.90 3.05 3.00 2.95 2.90 3.05 3.00 2.95 2.90 2.85 2.80 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 VOUT3 IOUT3 = 10 mA VOUT2 VOUT1 IOUT1 = 50 mA IOUT2 0 50 100
t, TIME (s)
Figure 49. Load Transient Response
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NCP4523
COUT = 2.2 F + 1 3.25 3.20 3.15 IOUT3 3.10 3.05 VOUT, OUTPUT VOLTAGE (V) 3.00 2.95 IOUT1 = 50 mA 2.90 3.05 3.00 2.95 IOUT2 = 30 mA 2.90 3.05 3.00 2.95 2.90 2.85 2.80 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 VOUT3 VOUT2 VOUT1 0 50 IOUT1, OUTPUT CURRENT (mA) 3.30 100
t, TIME (s)
Figure 50. Load Transient Response
Technical Notes
(Pin numbers of the diagram below are applied to NCP4523)
To use this IC with ceramic capacitors, ESR should be set in the range of the following graphs. Test circuit for Noise level measurement is shown below.
IOUT1 1 VOUT1 Ceramic Capacitor IOUT2 2 VOUT2 Spectrum Analyzer ESR S.A. ESR Ceramic Capacitor IOUT3 3 VOUT3 Ceramic Capacitor 4 GND ESR Ceramic 1.0 F CE3 5 CE2 6 CE1 7 VIN VDD 8
Figure 51.
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NCP4523
Noise level is measured with a spectrum analyzer and hatched area shows stable areas of which noise level is approximately equal or less than 40 mV (Avg.). The relation between Load Current (IOUT) and Equivalent Series Resistors (ESR) value of external output capacitor with the stable area is shown below.
100 100
10 ESR ()
STABLE
10 ESR ()
STABLE
1
1
0.1
UNSTABLE
0.1
UNSTABLE
0.01 0 50 100 150 LOAD CURRENT (mA)
0.01 0 50 100 150 LOAD CURRENT (mA)
Figure 52. Ceramic Capacitor 1.0 mF
100 100
Figure 53. Ceramic Capacitor 2.2 mF
10 ESR ()
STABLE
10 ESR ()
STABLE
1
1
0.1
UNSTABLE
0.1
UNSTABLE
0.01 0 20 40 LOAD CURRENT (mA) 60 80
0.01 0 20 40 LOAD CURRENT (mA) 60 80
Figure 54. Ceramic Capacitor 1.0 mF
100 100
Figure 55. Ceramic Capacitor 2.2 mF
10 ESR ()
STABLE
10 ESR ()
STABLE
1
1
0.1
UNSTABLE
0.1
UNSTABLE
0.01 0 20 40 LOAD CURRENT (mA) 60 80
0.01 0 20 40 LOAD CURRENT (mA) 60 80
Figure 56. Ceramic Capacitor 1.0 mF
Figure 57. Ceramic Capacitor 2.2 mF
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NCP4523
ORDERING INFORMATION
S/N for Voltage Setting 1 1 3 20 Output Voltage VR1 2.8 2.8 3.0 2.35 VR2 2.8 2.8 3.0 2.8 VR2 2.8 2.8 3.0 2.8 Marking Product Code B01A B01A B03A B20A Package SSOP-8 SSOP-8 (Pb-Free) SSOP-8 SSOP-8 Shipping 3000 Tape and Reel 3000 Tape and Reel 3000 Tape and Reel 3000 Tape and Reel
Device NCP4523G1T1 NCP4523G1T1G NCP4523G3T1 NCP4523G20T1
For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specification Brochure, BRD8011/D.
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NCP4523
PACKAGE DIMENSIONS
SSOP-8 G SUFFIX CASE 487-01 ISSUE O
E
8 5
-X- -Y- BL
1 4
NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. DIMENSION D APPLIES TO PLATED TERMINAL AND IS MEASURED BETWEEN 0.25 AND 0.30 MM FROM TERMINAL. 4. COPLANARITY APPLIES TO THE EXPOSED PAD AS WELL AS THE TERMINALS. DIM A B C D E F G H J K L INCHES MIN MAX 0.106 0.122 0.102 0.118 0.039 0.051 0.004 0.012 0.073 0.081 0.012 0.024 0.026 TYP 0.019 TYP 0.004 0.006 0.000 0.008 0.150 0.165 MILLIMETERS MIN MAX 2.70 3.10 2.60 3.00 1.00 1.30 0.10 0.30 1.85 2.05 0.30 0.60 0.65 TYP 0.475 TYP 0.11 0.14 0.00 0.20 3.80 4.20
H A
K C G -T-
NOTE 3
0.10 (0.004) D 8 PL
M SEATING PLANE
F
J
0.15 (0.006)
TXY
SOLDERING FOOTPRINT*
0.38 mm
1.465 mm
0.65 mm
2.32 mm
5.28 mm *For additional information on our Pb-Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D.
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NCP4523
ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. "Typical" parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC 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 SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
PUBLICATION ORDERING INFORMATION
LITERATURE FULFILLMENT: Literature Distribution Center for ON Semiconductor P.O. Box 61312, Phoenix, Arizona 85082-1312 USA Phone: 480-829-7710 or 800-344-3860 Toll Free USA/Canada Fax: 480-829-7709 or 800-344-3867 Toll Free USA/Canada Email: orderlit@onsemi.com N. American Technical Support: 800-282-9855 Toll Free USA/Canada Japan: ON Semiconductor, Japan Customer Focus Center 2-9-1 Kamimeguro, Meguro-ku, Tokyo, Japan 153-0051 Phone: 81-3-5773-3850 ON Semiconductor Website: http://onsemi.com Order Literature: http://www.onsemi.com/litorder For additional information, please contact your local Sales Representative.
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NCP4523/D

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