Philips SA57031-25UK, SA57031-28UK, SA57031-30UK, SA57031-33UK, SA57031-36UK User Manual
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INTEGRATED CIRCUITS
SA57031-XX
Micropower 150 mA, low-noise, low dropout
linear regulator with on/off
Product data
Supersedes data of 2003 Feb 24
2003 Jun 23
Philips Semiconductors Product data
Micropower 150 mA, low-noise, low dropout linear
regulator with on/off
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
•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.
•Low T emperature Drift Co-ef ficient to V
•Built-in Current Limiter
•Wide Operating Temperature Range: –40 to +85 °C
APPLICATIONS
•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
Bottom View
SA57031-XX
: ±100 ppm/°C
O
SIMPLIFIED SYSTEM DIAGRAM (BOTTOM VIEW)
ON
OFF
A2
SA57031-XX
GND
A1 B1
R
LOAD
Figure 1. Simplified system diagram.
V
I
B2
V
O
C
I
2.2 µF
Preset output voltages:
V
C
O
1.8 V to 5.0 V
(in 100 mV increments)
+
DC
2.0 V TO 6.0 V
–
SL02001
2003 Jun 23 853-2361 28634
2
Philips Semiconductors Product data
TYPE NUMBER
Micropower 150 mA, low-noise, low dropout linear
SA57031-XX
regulator with on/off
ORDERING INFORMATION
PACKAGE
NAME DESCRIPTION
SA57031-XXUK WL–CSP4 wafer level, chip-scale package; 4 bumps –40 to +85 °C
NOTE:
The device has five voltage output options, indicated by the XX on
the Type Number. Other voltages, between 2.5 to 5.0 V in 100 mV
increments, are available on request.
XX
18 1.8 V
24 2.4 V
28 2.8 V
VOLTAGE (Typical)
PIN DESCRIPTION
PIN SYMBOL DESCRIPTION
A1 GND Device ground
B1 VO V oltage output
B2 VI Voltage input
A2 ON/OFF Control pin. Connect to VI if not used.
PIN CONFIGURATION (TOP VIEW)
TEMPERATURE
RANGE
ON/OFF
A2
SA57031-XX
A1 B1
GND
Figure 2. Pin configuration.
V
B2
V
I
O
SA00633
MAXIMUM RATINGS
Symbol
Tstg Storage temperature range –40 +150 °C
Toper Operating Temperature Range –40 +85 °C
VI Supply voltage –0.3 +7 V
IO Output Current
P Power dissipation
Parameter
Min Max Unit
–
–
200 mA
190 mW
2003 Jun 23
3
Philips Semiconductors Product data
PSRR
Power supply ripple rejection
dB
Micropower 150 mA, low-noise, low dropout linear
regulator with on/off
CHARACTERISTICS
Tamb = 25 °C; VI = V
SYMBOL
I
CC
I
(OFF) Input current (off) VON/OFF = 0.25 V
CC
Iq Quiescent Current IO = 0 to 150 mA
∆V
LNR
∆V
LDR
∆VO/∆T VO Temperature coefficient Tj = –30 to +85 °C
Vn Output noise voltage fBW = 20 to 80 kHz; CO = 2.2 µF
I
ON/OFF
V
ON/OFF(H)
V
ON/OFF(L)
R
ON/OFF
V
O
V
dropout
(nom) +1 V; VON/OFF = 2 V; IO = 1 mA unless otherwise specified.
O
PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
No-load input current
Line regulation VI = VO +0.5 V to 6 V
Load regulation
pp
pp
Output short-circuit current VI = VO +1 V ; VO = 0 V
ON/OFF HIGH threshold
voltage
ON/OFF LOW threshold voltage 0
ON/OFF Pull-down resistance 2.5 5 15 MΩ
Output voltage (nominal) x0.98 nom x1.02 V
Dropout voltage
IO = 0 mA
IO = 50 mA – 55 –
IO = 150 mA – 60 –
IO = 1 to 50 mA
IO = 1 to 100 mA
IO = 1 to 150 mA
f = 1 kHz; IO = 1 mA; Vripple = 0.5 V ;
= 1.8 to 4.0 V
V
O
f = 1 kHz; IO = 1 mA; Vripple = 0.5 V ;
= 4.1 to 5.0 V
V
O
VO = 2.0 to 2.3 – 0.25 0.35
VO = 2.4 to 2.7 – 0.24 0.29
VO = 2.8 to 5.0 – 0.23 0.26
SA57031-XX
–
–
–
–
–
–
–
– –
–
–
–
–
1.5
45 100 µA
0.1 1 µA
100 190 µA
5 10 mV
10 25
20 50
30 70
80
70
30
30
–
–
mV
ppm/°C
–
–
–
–
VI V
0.25 V
µVrms
mA
V
PRESET OUTPUT VOLTAGES
Part Number Min Typ Max
SA57031-25UK 2.450 2.500 2.550
SA57031-28UK 2.744 2.800 2.856
SA57031-30UK 2.940 3.000 3.060
SA57031-33UK 3.234 3.300 3.366
SA57031-36UK 3.528 3.600 3.672
2003 Jun 23
4
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