SA57031-25UK
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
INTEGRATED CIRCUITS
查询SA57031-18UK供应商
Philips Semiconductors Product data
SA57031-XX
Micropower 150 mA, low-noise, low dropout linear
regulator with on/off
2
2003 Jun 23 853-2361 28634
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).
Bottom View
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
O
: ±100 ppm/°C
•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
SIMPLIFIED SYSTEM DIAGRAM (BOTTOM VIEW)
SL02001
B2
A1 B1
V
O
GND
C
O
C
I
2.2 µF
ON
A2
V
I
SA57031-XX
OFF
+
–
DC
2.0 V TO 6.0 V
R
LOAD
V
Preset output voltages:
1.8 V to 5.0 V
(in 100 mV increments)
Figure 1. Simplified system diagram.
Philips Semiconductors Product data
SA57031-XX
Micropower 150 mA, low-noise, low dropout linear
regulator with on/off
2003 Jun 23
3
ORDERING INFORMATION
PACKAGE
TEMPERATURE
TYPE
NUMBER
NAME DESCRIPTION
RANGE
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
VOLTAGE (Typical)
18 1.8 V
24 2.4 V
28 2.8 V
PIN CONFIGURATION (TOP VIEW)
SA00633
B2
A1 B1
A2
SA57031-XX
V
O
GND
ON/OFF
V
I
Figure 2. Pin configuration.
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.
MAXIMUM RATINGS
Symbol
Parameter
Min Max Unit
Tstg Storage temperature range –40 +150 °C
Toper Operating Temperature Range –40 +85 °C
VI Supply voltage –0.3 +7 V
IO Output Current
–
200 mA
P Power dissipation
–
190 mW
Philips Semiconductors Product data
SA57031-XX
Micropower 150 mA, low-noise, low dropout linear
regulator with on/off
2003 Jun 23
4
CHARACTERISTICS
Tamb = 25 °C; VI = V
O
(nom) +1 V; VON/OFF = 2 V; IO = 1 mA unless otherwise specified.
SYMBOL
PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
I
CC
No-load input current
I
O
= 0 mA
–
45 100 µA
I
O
= 50 mA – 55 –
I
O
= 150 mA – 60 –
I
CC
(OFF) Input current (off) VON/OFF = 0.25 V
–
0.1 1 µA
Iq Quiescent Current I
O
= 0 to 150 mA
–
100 190 µA
∆V
LNR
Line regulation V
I
= VO +0.5 V to 6 V
–
5 10 mV
I
O
= 1 to 50 mA
–
10 25
∆V
LDR
Load regulation
I
O
= 1 to 100 mA
–
20 50
mV
I
O
= 1 to 150 mA
–
30 70
∆VO/∆T VO Temperature coefficient Tj = –30 to +85 °C
– –
ppm/°C
pp
pp
f = 1 kHz; I
O
= 1 mA; Vripple = 0.5 V ;
V
O
= 1.8 to 4.0 V
–
80
–
PSRR
Po
w
er
s
u
ppl
y
ripple
rejection
f = 1 kHz; I
O
= 1 mA; Vripple = 0.5 V ;
V
O
= 4.1 to 5.0 V
–
70
–
dB
Vn Output noise voltage fBW = 20 to 80 kHz; C
O
= 2.2 µF
–
30
–
µVrms
I
ON/OFF
Output short-circuit current V
I
= VO +1 V ; VO = 0 V
–
30
–
mA
V
ON/OFF(H)
ON/OFF HIGH threshold
voltage
1.5
–
VI V
V
ON/OFF(L)
ON/OFF LOW threshold voltage 0
–
0.25 V
R
ON/OFF
ON/OFF Pull-down resistance 2.5 5 15 MΩ
V
O
Output voltage (nominal) x0.98 nom x1.02 V
V
dropout
Dropout voltage
V
O
= 2.0 to 2.3 – 0.25 0.35
V
V
O
= 2.4 to 2.7 – 0.24 0.29
V
O
= 2.8 to 5.0 – 0.23 0.26
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
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