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LOW VOLTAGE 1.25V ADJUSTABLE PRECISION SHUNT REGULATOR AZ432

· · · · · Graphic Card PC Motherboard Voltage Adapter Switching Power Supply Charger

Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432
General Description
Features
· · · · · · · · Wide Programmable Precise Output Voltage from 1.25V to 18V High Stability under Capacitive Load Low Temperature Deviation: 3mV Typical Low Equivalent Full-Range Temperature Coefficient: 20PPM / oC Typical Low Dynamic Output Resistance: 0.05 Typical High Sink Current Capacity from 0.1mA to 100 mA Low Output Noise Wide Operating Range of -40 to 125oC
Applications
· · · · · Graphic Card PC Motherboard Voltage Adapter Switching Power Supply Charger
TO-92
TO-92 Ammo Packing
SOT-89-3
SOT-23-5
SOT-23
Figure 1. Package Types of AZ432
Mar. 2007 Rev. 1. 6 1
BCD Semiconductor Manufacturing Limited
Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432
Pin Configuration
Z Package (TO-92) Z Package (TO-92 Ammo Packing) N Package (SOT-23)
ANODE 3 2 1 CATHODE 3 ANODE REF 1 2
CATHODE ANODE REF
CATHODE
K Package (SOT-23-5)
R Package (SOT-89-3)
NC NC CATHODE
ANODE
ANODE CATHODE
Figure 2. Pin Configuration of AZ432 (Top View)
Functional Block Diagram
CATHODE
ANODE
Figure 3. Functional Block Diagram of AZ432
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BCD Semiconductor Manufacturing Limited
Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432
Ordering Information
AZ432 Circuit Type
E1: Lead Free
Blank: Tin Lead
TR: Tape and Reel or Ammo
Package
Z: TO-92 N: SOT-23 K: SOT-23-5 R: SOT-89-3
Package
Temperature Range
Part Number Tin Lead AZ432AZ AZ432AZTR AZ432BZ AZ432BZTR Lead Free AZ432AZ-E1 AZ432AZTR-E1 AZ432BZ-E1 AZ432BZTR-E1 AZ432ANTR-E1 AZ432BNTR-E1 AZ432AKTR AZ432BKTR AZ432ARTR AZ432BRTR AZ432AKTR-E1 AZ432BKTR-E1 AZ432ARTR-E1 AZ432BRTR-E1 K43 K44 R42A R42B
Marking ID Tin Lead AZ432AZ AZ432AZ AZ432BZ AZ432BZ Lead Free AZ432AZ-E1 AZ432AZ-E1 AZ432BZ-E1 AZ432BZ-E1 EA8 EA9 E7A E8A E42A E42B
Packing Type Bulk Ammo Bulk Ammo Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel
TO-92
-40 to 125oC
SOT-23
-40 to 125oC -40 to 125oC -40 to 125oC
SOT-23-5
SOT-89-3
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BCD Semiconductor Manufacturing Limited
Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432
Absolute Maximum Ratings (Note 1)
Parameter Cathode Voltage Cathode Current Range (Continuous) Reference Input Current Range Symbol VKA IKA IREF PD N, K Package Junction Temperature Storage Temperature Range TJ TSTG 150 -65 to 150 370
Value 20 -100 to 100 10 Z, R Package 770
Unit V mA mA
Power Dissipation
Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods may affect device reliability.
Recommended Operation Ratings
Parameter Cathode Voltage Cathode Current Operating Ambient Temperature Range Symbol VKA IKA Min VREF 0.1 -40 Max 18 100 125 Unit V mA
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BCD Semiconductor Manufacturing Limited
Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432
Electrical Characteristics
Min 1.244 1.238
Typ 1.250 1.250 2 3 4 -0.5 0.15 0.1 55 0.04 0.01 0.05
Max 1.256 1.262 10 10 15 -1.5 0.4 0.4 80 0.10 0.05 0.15
Unit V
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BCD Semiconductor Manufacturing Limited
Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432
Electrical Characteristics (Continued)
R1 VIN IKA VKA
VIN IOFF
Figure 6. Test Circuit 6 for IOFF
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BCD Semiconductor Manufacturing Limited
Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432
Typical Performance Characteristics
Reference Current (µA)
Reference Voltage (V)
Ambient Temperature ( C)
Figure 7. Reference Voltage vs. Ambient Temperature
Figure 8. Reference Current vs. Ambient Temperature
Cathode Current (µA)
Cathode Current (mA)
Cathode Voltage (V)
Figure 9. Cathode Current vs. Cathode Voltage
Figure 10. Cathode Current vs. Cathode Voltage
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BCD Semiconductor Manufacturing Limited
Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432
Typical Performance Characteristics (Continued)
Output
6.8K 10µF
Voltage Gain (dB)
Small Signal Frequency (Hz)
Figure 11. Small Signal Voltage Gain vs. Frequency
Output 100 IKA
Impedance ()
0.01 1k
Frequency (Hz)
Figure 12. Dynamic Impedance vs. Frequency
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BCD Semiconductor Manufacturing Limited
Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432
Typical Performance Characteristics (Continued)
Input and Output Voltage (V)
Input
Output
Time (µS)
Figure 13. Pulse Response of Input and Output Voltage
Ambient Temperature ( C)
Figure 14. Ratio of Delta Reference Voltage to the Ratio of Delta Cathode Voltage vs. Ambient Temperature
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BCD Semiconductor Manufacturing Limited
Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432
Typical ApplicationS
R3 VIN R1 V OUT
V REF R2 AZ432
Figure 15. Shunt Regulator
VIN R1 R4 R2
AZ432
Figure 16. High Current Shunt Regulator
R2 VIN IOUT
AZ432
Figure17. Current Source or Current Limit
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BCD Semiconductor Manufacturing Limited
Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432
Typical Application (Continued)
VIN R1 8.2K
AZ1117
2.5V / 1A R2 250
AZ432 R3 250
Figure18. Precision 2.5V / 1A Regulator
R4 VOUT
C2 Q1 2 AZ432
PWM Controller
4 PS521
Figure 19. PWM Converter with Reference
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BCD Semiconductor Manufacturing Limited
Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432
Mechanical Dimensions TO-92 Unit: mm(inch)
1.100(0.043) 1.400(0.055) 3.430(0.135) MIN 0.360(0.014) 0.510(0.020)
0.000(0.000) 0.380(0.015) 1.600(0.063) MAX 4.400(0.173) 4.700(0.185)
1.270(0.050) TYP
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BCD Semiconductor Manufacturing Limited
Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432
Mechanical Dimensions (Continued) TO-92 Ammo Packing Unit: mm(inch)
19.000(0.748) 21.000(0.827) 0.380(0.015) 0.550(0.022) 1.000 (0.039) MAX 5.500(0.217) 6.500(0.256) 6.050(0.238) 6.650(0.262) 2.200(0.087) 2.800(0.110) 2.200(0.087) 2.800(0.110) 15.500(0.610) 16.500(0.650)
2.500(0.098) MIN
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BCD Semiconductor Manufacturing Limited
Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432
Mechanical Dimensions (Continued) SOT-23 Unit: mm(inch)
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BCD Semiconductor Manufacturing Limited
Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432
Mechanical Dimensions (Continued) SOT-23-5 Unit: mm(inch)
0.700(0.028) REF
0.950(0.037) TYP
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BCD Semiconductor Manufacturing Limited
Data Sheet
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432
Mechanical Dimensions (Continued) SOT-89-3 Unit: mm(inch)
R0.200(0.008)
R0.150(0.006)
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BCD Semiconductor Manufacturing Limited
http://www.bcdsemi.com
IMPORTANT NOTICE BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifications herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for any particular purpose, nor does BCD Semiconductor Manufacturing Limited assume any liability arising out of the application or use of any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights or other rights nor the rights of others.
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BCD Semiconductor Manufacturing Limited
- IC Design Group Advanced Analog Circuits (Shanghai) Corporation 8F, Zone B, 900, Yi Shan Road, Shanghai 200233, China Tel: +86-21-6495 9539, Fax: +86-21-6485 9673
REGIONAL SALES OFFICE
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