SA57022-25D PHILIPS [NXP Semiconductors], SA57022-25D Datasheet - Page 2

• Manufacturer Part Number: SA57022-25D
• Description: 500 mA LDO with ON/OFF control and Vref bypass
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
GENERAL DESCRIPTION
The SA57022-XX has an extremely precise fixed output with a
typical accuracy of 2%. It is designed to provide very low dropout
and ultra low noise with an optional Bypass pin, and fast transient
response. Supply current is reduced to zero (typical).
The SA57022-XX incorporates both over-temperature and
over-current protection. The SA57022-XX is stable with an output
capacitor of only 1.0 F and has a maximum output current of
500 mA. It is available in the 7-pin small outline package (SOP002).
FEATURES
SIMPLIFIED SYSTEM DIAGRAM
2003 Oct 13
Very low dropout voltage: 300 mV typ. (I
High precision output voltage: 2%
Output current capacity: 500 mA
Low noise: 75 V
Extremely good line regulation: 10 mV typical
Extremely good load regulation: 20 mV typical
Low temperature drift co-efficient to V
Internal current limit and thermal shut-down circuits
Input voltage range: –0.3 V to 12 V
Wide preset output voltage range: 1.8 V to 5 V
Wide operating temperature range: –40 C to +85 C
500 mA LDO with ON/OFF control and V
rms
typ. @ 20 Hz to 80 KHz, for C
ON/OFF
GND
V
IN
out
out
: 100 ppm/ C
7
5
3
= 500 mA)
BIAS
Figure 1. Simplified system diagram.
n
= 470 pF.
DRIVER
SHUTDOWN
THERMAL
2
CURRENT
APPLICATIONS
LIMIT
Battery-operated systems
Portable computers
Cameras, VCRs and camcorders
PCMCIA cards, modems, pagers
Cellular/GSM/PHS phones
Linear post-regulator for SMPS
Instrumentation
ref
BYPASS
bypass
4
R
R
REFERENCE
SL01527
1
V
OUT
SA57022-XX
Product data