INTEGRATED CIRCUITS
SA57001-XX
Microminiature, low power consumption,
low dropout regulator
Product data
Supersedes data of 2001 Aug 01
2003 Mar 20
Philips
Semiconductors
Philips Semiconductors
Product data
Microminiature, low power consumption,
low dropout regulator
SA57001-XX
GENERAL DESCRIPTION
The SA57001-XX is a series of micro-miniature linear regulators
providing fixed output voltages with a precision accuracy of
±2%
at
output currents up to 200 mA. The regulator is designed to serve as
a post regulator in microprocessor power supplies. The device has
an ON/OFF pin for output On/Off control, and a Noise pin which can
be used to bypass the internal voltage reference node for enhanced
noise reduction.
The SA57001 has a dropout voltage of only 0.1 V (typical) while
delivering 50 mA of output current. The maximum no load quiescent
current is less than 190
µA
in the ON state. The device has thermal
shutdown and output current limiting circuits to prevent damage from
overheating and short circuits. The SA57001 regulator series is
available in the SOT23-5 package.
FEATURES
•
No load quiescent current of 95
µA
•
0.1 V typical (I
O
= 50 mA) dropout voltage
•
70 dB typical ripple rejection
•
200 mA maximum output current
•
35
µV
rms
(typical)
•
Preset output voltages of 2.0, 2.5, 2.8, 3.0, 3.1, 3.3, 3.6, 4.5, 4.8,
5.0 V available
APPLICATIONS
•
Cordless phones
•
Portable minidiscs
•
Other battery-operated equipment.
•
Output current limiting
•
Thermal shutdown protection
•
Output ON/OFF control.
SIMPLIFIED SYSTEM DIAGRAM
V
IN
5
THERMAL
PROTECT
DRIVER
ON/OFF
1
C
OUT
4.7
µF
(ALUMINUM
ELECTROLYTIC)
4
V
OUT
OUTPUT (±2%)
CURRENT
LIMIT
NOISE
3
V
REF
0.01
µF
CERAMIC
(OPTIONAL)
2
GND
SA57001-XX
SL01418
Figure 1. Simplified system diagram.
2003 Mar 20
2
Philips Semiconductors
Product data
Microminiature, low power consumption,
low dropout regulator
SA57001-XX
ORDERING INFORMATION
PACKAGE
TYPE NUMBER
SA57001-XXGW
NAME
SOT23-5, SOT25, SO5
DESCRIPTION
plastic small outline package; 5 leads (see dimensional drawing)
TEMPERATURE
RANGE
–40 to +85
°C
NOTE:
The device has ten voltage output options, indicated by the
XX
on
the Type Number.
XX
20
25
28
30
31
33
36
45
48
50
VOLTAGE (Typical)
2.0 V
2.5 V
2.8 V
3.0 V
3.1 V
3.3 V
3.6 V
4.5 V
4.8 V
5.0 V
PIN CONFIGURATION
PIN DESCRIPTION
PIN
SA57001-XX
SYMBOL
ON/OFF
GND
NOISE
DESCRIPTION
Output ON/OFF control pin.
Circuit ground pin.
Provides option of externally bypassing the
internal voltage reference node for
enhanced noise reduction.
Voltage regulator output.
Input supply voltage to regulator.
1
2
3
4
V
OUT
ON/OFF
1
5
V
IN
GND
2
NOISE
3
4
SA00617
V
OUT
V
IN
5
Figure 2. Pin configuration.
MAXIMUM RATINGS
SYMBOL
V
IN
T
oper
T
j
T
stg
P
D
R
th(j-a)
V
ESD1
V
ESD2
T
solder
Input supply voltage
Operating ambient temperature range
Operating junction temperature
Storage temperature
Power dissipation
Thermal resistance from junction to ambient
ESD damage threshold (Human Body Model); Note 1
ESD damage threshold (Machine Model); Note 2
Soldering temperature; Note 3
PARAMETER
MIN.
–0.3
–20
–
–40
–
–
–
–
–
MAX.
12
+75
140
+125
150
140
2000
200
230
UNIT
V
°C
°C
°C
mW
°C/W
V
V
°C
NOTES:
1. Performed in accordance with Human Body Model (CZap = 100 pF, RZap = 1500
Ω).
2. Performed in accordance with Machine Model (CZap = 100 pF, RZap = 0
Ω).
3. 60 second maximum exposure for SMD Reflow temperatures above 183
°C.
2003 Mar 20
3
Philips Semiconductors
Product data
Microminiature, low power consumption,
low dropout regulator
SA57001-XX
DC ELECTRICAL CHARACTERISTICS
T
amb
= 25
°C,
unless otherwise specified.
SYMBOL
V
OUT
I
LIM
I
Q1
I
Q2
V
IN
– V
OUT
Reg
line
Reg
load
TCV
o
RR
V
n
PARAMETER
Output voltage
Output current limit
Quiescent current (circuit ON)
Quiescent current (circuit OFF)
Dropout voltage (Note 1)
Line regulation
Load regulation
Temperature coefficient of output
voltage
Ripple rejection ratio
Output noise voltage
V
IN
= V
OUT
+ 1.0 V; ON/OFF = V
IN;
I
OUT
= 0 mA
V
IN
= V
OUT
+ 1.0 V; ON/OFF = 0 V
V
IN
= V
OUT
+ 0.2 V; I
OUT
= 50 mA
V
OUT
+ 1.0 V
≤
V
IN
≤
V
OUT
+ 10 V;
I
OUT
= 50 mA
V
IN
= V
OUT
+ 1.0 V;
0 mA
≤
I
OUT
≤
100 mA
–20
°C ≤
T
j
≤
75
°C;
V
IN
= V
OUT
+ 1.0 V; I
OUT
= 30 mA
V
IN
= V
OUT
+ 1.0 V; I
OUT
= 30 mA;
V
IN(Ripple)
= 1.0 V
P-P
; f = 120 Hz
V
IN
= V
OUT
+ 1.0 V; I
OUT
= 30 mA;
20 Hz
≤
f
≤
80 kHz;
C
n
= 0.01
µF
V
ON/OFF
= 1.6 V
CONDITIONS
V
IN
= V
OUT
+ 1.0 V; I
OUT
= 30 mA
MIN.
V
OUT
– 2.0%
200
–
–
–
–
–
–
50
–
TYP.
V
OUT
240
95
–
0.1
10
30
100
70
35
MAX.
V
OUT
+ 2.0%
–
190
0.1
0.2
20
60
–
–
–
UNIT
V
mA
µA
µA
V
mV
mV
µV/°C
dB
µV
rms
I
ON/OFF
V
ON/OFF(H)
V
ON/OFF(L)
T
LIM
ON/OFF input current
ON/OFF threshold (logic HIGH)
ON/OFF threshold (logic LOW)
Thermal shutdown
–
1.6
–0.3
–
5.0
–
–
125
10
V
IN
– 0.3 V
0.4
–
µA
V
V
°C
NOTE:
1. Dropout voltage is a measure of the minimum input/output differential voltage at the specified output current.
2003 Mar 20
4
Philips Semiconductors
Product data
Microminiature, low power consumption,
low dropout regulator
SA57001-XX
TYPICAL PERFORMANCE CURVES
10
∆
V
OUT
, OUTPUT VOLTAGE CHANGE (mV)
I
OUT
– 30 mA
ON/OFF = V
IN
= V
OUT
+ 1.0 V
T
amb
= 25
°C
5.0
400
PCB MOUNTED DEVICE
(60
×
40 1.6 mm)
P, POWER DISSIPATION (mW)
300
V
OUT
200
UNMOUNTED DEVICE
–5.0
100
–10
4.0
6.0
8.0
V
IN
, INPUT VOLTAGE (V)
10
12
0
–50
–25
0
25
50
75
100
125
T
amb
, TEMPERATURE (°C)
SL01399
SL01400
Figure 3. Normalized line regulation versus input voltage.
Figure 4. Power dissipation versus temperature.
2.0
No output load
ON/OFF = V
IN
T
amb
= 25
°C
1.5
Typical 5.0 V Device
1.0
Typical 3.0 V Device
Typical 2.0 V Device
0.5
9.0
8.0
I
Q(on)
, GROUND CURRENT (mA)
7.0
6.0
5.0
4.0
3.0
2.0
1.0
V
IN
= V
OUT
+ 1.0 V
ON/OFF = V
IN
T
amb
= 25
°C
I
Q1
, QUIESCENT CURRENT (mA)
0
0
0
2.0
4.0
6.0
8.0
10
12
0
20
40
60
80
100
120
140
160
V
IN
, INPUT VOLTAGE (V)
I
OUT
, OUTPUT CURRENT (mA)
SL01401
SL01402
Figure 5. Quiescent current versus input voltage.
Figure 6. Ground current versus output current.
300
V
IN
– V
OUT
, DROPOUT VOLTAGE (mV)
ON/OFF = V
IN
= V
OUT
+ 1.0 V
T
amb
= 25
°C
250
V
OUT
, OUTPUT VOLTAGE (V)
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0
40
80
120
160
200
0
50
100
150
200
250
300
I
OUT
, OUTPUT CURRENT (mA)
I
OUT
, OUTPUT CURRENT (mA)
Shown for V
OUT
= 3.0 V device
ON/OFF = V
IN
= V
OUT
+ 1.0 V
T
amb
= 25
°C
200
150
100
50
0
SL01403
SL01404
Figure 7. Dropout voltage versus output current.
Figure 8. Typical output current limit.
2003 Mar 20
5
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