SA57031-18UK PHILIPS [NXP Semiconductors], SA57031-18UK Datasheet - Page 2

• Manufacturer Part Number: SA57031-18UK
• Description: Micropower 150 mA, low-noise, low dropout linear regulator with on/off
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
GENERAL DESCRIPTION
The SA57031 is a 150 mA, fixed output voltage regulator designed
to provide very low dropout voltage and low noise in battery
powered and portable applications. The output voltage is preset to
voltages between 1.8 to 5.0 Volts, in 100 mV increments.
The SA57031 achieves excellent performance in all specifications
such as excellent power supply ripple rejection at low frequency, low
supply-current, low dropout voltage, low power consumption,
extremely small size with chip scaled package (CSP), extremely low
output noise voltage, very fast start-up response time, precision
output, fast dynamic response to line and load regulation, etc. This
regulator consists of an internal voltage reference, and current limit.
The SA57031 is housed in a WL-CSP4 package (see dimensional
drawing for layout).
FEATURES
SIMPLIFIED SYSTEM DIAGRAM (BOTTOM VIEW)
2003 Jun 23
Many Preset Output Voltages: 1.8 to 5.0 V in 0.1 V increments
Wafer-level chip scale package (WL-CSP4)
Extremely low PSRR: 80 dB typical at 1 kHz
Low Dropout Voltage: 100 mV (typ) @ 50 mA output current
Very Low Consumption Current: 100 mA typ. (when not loaded),
0.1 mA max. (when off)
High precision Output Voltage: 2%
Output Current Capacity: 150 mA (typ)
Low Noise: 30mVrms @ 10 Hz to 100 kHz
Good Line Regulation: 0.01%/V typ.
Good Load Regulation: 0.003%/mA typ.
Micropower 150 mA, low-noise, low dropout linear
regulator with on/off
OFF
ON
GND
Figure 1. Simplified system diagram.
A1
A2
R
LOAD
SA57031-XX
V
O
B2
B1
2
C
O
APPLICATIONS
V
I
2.2 F
Low Temperature Drift Co-efficient to V
Built-in Current Limiter
Wide Operating Temperature Range: –40 to +85 C
Cellular Phones, Cordless Phones and 2-way Radios
Electronic Notebooks, PDAs and Palmtop Computers
Cameras, VCRs and Camcorders
PCMCIA Cards
Modems
Battery-powered or Hand-held Instruments
V
C
I
Preset output voltages:
1.8 V to 5.0 V
(in 100 mV increments)
+
–
DC
2.0 V TO 6.0 V
Bottom View
O
SA57031-XX
: 100 ppm/ C
853-2361 28634
SL02001
Product data