SPX2975_05 Datasheet, PDF (1/11 Pages) Sipex Corporation – 400mA Low Dropout Voltage Regulator

®
SPX2975
400mA Low Dropout Voltage Regulator
FEATURES
■ 5V Fixed Output
■ High Accuracy
■ Very Low Current Consumption: 60µA
■ Power-on and Under Voltage Reset
■ Reset Low Down to V_OUT = 1V
■ Extremely Low Dropout Voltage
SPX2975
5 Pin TO-220
123 45
SPX2975
5 Pin TO-263
1 2345
■ Short Circuit Protection
■ Programmable Safety Timer
■ 4kV ESD Protection
APPLICATIONS
■ Automotive Electronics
Now Available in Lead Free Packaging
■ Wireless Station
■ Industrial Systems
DESCRIPTION
Sipex’s SPX2975 is a low dropout linear regulator with integrated PNP pass transistor. The part
is available in a 5 pin TO-220 package or surface mount TO-263. The part used to convert an
automotive battery voltage, with allowable input up to 45V, down to 5V with at least 400mA output
current delivered. Internal power consumption is kept to 60uA ideal for applications where micro-
power operation is important. At over-temperature the SPX2975 is turned off by the integrated
temperature protection circuit. A reset signal is generated for a typical output voltage of 4.65V
with a time delay that can be programmed by an external delay capacitor.
TYPICAL APLICATION CIRCUIT
I_IN
C₁₁
1000µF
I
1
C₁₂
100nF
V_IN
I_RD,d
I_RD,c
RD ₄
V_RD
C_D
47nF
V_OUT
5
SPX2975
3
GND
I_GND
2 ^RO
I_OUT
C_Q
22µF
I_RO
R_EXT
5kΩ
V_OUT
V_RD
Date: 1/17/05
SPX2975 400mA Low Dropout Voltage Regulator
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© Copyright 2005 Sipex Corporation