SA57026D PHILIPS [NXP Semiconductors], SA57026D Datasheet - Page 2

• Manufacturer Part Number: SA57026D
• Description: 300 mA LDO with ON/OFF control and independent delayed RESET function
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
GENERAL DESCRIPTION
The SA57026 has an extremely precise fixed output with a typical
accuracy of 2%. It is designed to provide very low dropout and low
noise in CD-ROM drives, battery-operated systems, and portable
computers applications. This regulator consists of an internal
voltage reference, an error amplifier, a driver with current limiter, and
a thermal shut-down mechanism.
An Active-LOW RESET is assered when the detected voltage
(V
remains low for 30 s (typical) when zero capacitance connected to
Cd pin. The reset time delay can be adjusted by replacing
cpacitance values from Cd pin to Ground.
The device is available in the 7-pin small outline package (SOP002).
FEATURES
BLOCK DIAGRAM
2003 Oct 13
DET
Very low dropout voltage: 500 mV typ. (I
High precision output voltage: 2%
Output current capacity: 300 mA
Low noise: 40 mV
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
Adjustment-free reset detection voltage: 4.2 V typ.
Delay time can be adjusted by external capacitor
Wide operating temperature range: –40 C to +85 C
300 mA LDO with ON/OFF control and
independent delayed RESET function
) falls below the reset voltage threshold. The RESET output
ON/OFF
3
rms
typ. @ 20 Hz to 80 KHz and for C
THERMAL
PROTECT
out
out
: 100 ppm/ C
= 50 mA)
n
Figure 1. Block diagram.
= 10 nF
2
APPLICATIONS
CD-ROM drives
Electronic notebooks, PDAs and palmtop computers
Cameras, VCRs and camcorders
PCMCIA cards
Modems
Battery-operated or hand-held instruments
SA57026
4
5
2
1
7
SL01528
V
V
RESET
GND
Cd
IN
OUT
Product data