AZ431L
AZ431L is LOW VOLTAGE (1.24V) ADJUSTABLE PRECISION SHUNT REGULATOR manufactured by BCDSEMI.
Description
The AZ431L series ICs are low voltage three-terminal adjustable regulators with guaranteed thermal stability over a full operation range. These ICs feature sharp turn-on characteristics, low temperature coefficient and low output impedance, which make them ideal substitutes for Zener diodes in applications such as switching power supply, charger, motherboard and other adjustable regulators. The output voltage can be set to any value between 1.24V and 18V with two external resistors. The AZ431L precision reference is offered in two bandgap tolerance: 0.5% and 1%. These ICs are available in 4 packages: TO-92, SOT23-3, SOT-23-5, SOT-89.
Features
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- - Wide Programmable Precise Output Voltage from 1.24V to 18V High Stability under Capacitive Load Low Temperature Deviation: 3m V Typical Low Equivalent Full-Range Temperature Coefficient: 20PPM/o C Typical Low Dynamic Output Resistance: 0.05Ω Typical High Sink Current Capacity from 55µA to 100 m A Low Output Noise Wide Operating Range of -40 to 125o C
Applications
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- Graphic Card PC Motherboard Voltage Adapter Switching Power Supply Charger
SOT-23-5
SOT-23-3
TO-92
SOT-89
Figure 1. Package Types of AZ431L
Apr. 2005 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
Data Sheet
LOW VOLTAGE (1.24V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ431L
Pin Configuration
N Package (SOT-23-3)
ANODE
Z Package (TO-92)
K Package (SOT-23-5)
R Package (SOT-89)
3 2 1
CATHODE 3 ANODE 1 REF CATHODE REF CATHODE 3 4 REF REF ANODE CATHODE 2 NC 2 1 2 3 NC 1 5 ANODE
Figure 2. Pin Configuration of AZ431L (Top View)
Functional Block Diagram
CATHODE
+
- VREF
ANODE
Figure 3. Functional Block Diagram of AZ431L
Apr. 2005 Rev. 1. 2
BCD Semiconductor Manufacturing...
