INTEGRATED CIRCUITS
SA57000-XX
CapFREE™ 150 mA, low-noise, low dropout
regulator with thermal protection
Product data
Supersedes data of 2001 Jul 12
File under Integrated Circuits, Standard Analog
2001 Aug 27
Philips
Semiconductors
Philips Semiconductors
Product data
CapFREE™ 150 mA, low-noise, low dropout regulator
with thermal protection
SA57000-XX
GENERAL DESCRIPTION
The CapFREE™ SA57000 is the first in a new family of unique low
dropout regulators. It needs no external capacitors, offers a low
output noise voltage of 30
µV
RMS
, and an ultra-low dropout voltage
of 55 mV @ 50 mA output current. To accommodate high density
layouts, it is packaged in the small footprint 5 leaded SOT23-5 (SO5).
It is ideal for all portable and cellular phone applications.
Additional features include power and thermal shutdown, output
current limitation, power OK status, thermal warning, and external
logic-controlled on-off via the PWRON pin.
FEATURES
•
CapFREE: No output capacitor needed, stable for all capacitive
loads, regardless of ESR
APPLICATIONS
•
Low 30
µV
RMS
noise without noise bypass capacitor
•
Preset output voltages to 2.5 V, 2.8 V, 3.0 V, 3.3 V and 3.6 V;
other voltages available upon request. 2% output voltage
accuracy
•
Cordless and mobile phones
•
Industrial and medical equipment
•
Other battery-powered equipment.
•
150 mA maximum output current with current limitation
•
Typical dropout voltage 55 mV @ 50 mA output current
•
85
µA
typical ground current
•
Thermal-overload and short-circuit protection
•
PWROK pin: both power status and thermal warning indicator
•
PWRON pin offers logic-controlled shutdown
•
Maximum line regulation: 0.1%/V
•
Maximum load regulation: 0.02%/mA.
SIMPLIFIED SYSTEM DIAGRAM
SA57000
PWRON
3
PWRON
OVER 144
°C
(POWER/THERMAL SHUTDOWN)
PWRON
TEMPERATURE
SENSOR
OVER 127
°C
(POWER/THERMAL WARNING)
LOGIC
CONTROL
4
PWROK
PWRON
BAND
GAP
LOW-PASS
FILTER
OUTPUT
AMP.
5
V
OUT
GND
2
PWRON
BIAS
NETWORK
V
IN
1
SA00557
Figure 1. Simplified system diagram.
CapFREE is a trademark of Philips Electronics North America Corporation.
2001 Aug 27
2
853–2265 26991
Philips Semiconductors
Product data
CapFREE™ 150 mA, low-noise, low dropout regulator
with thermal protection
SA57000-XX
ORDERING INFORMATION
PACKAGE
TYPE NUMBER
SA57000-XXD
NAME
SOT23-5,
SOT25, SO5
DESCRIPTION
plastic small outline package; 5 leads (see dimensional drawing)
VERSION
SOT680-1
TEMPERATURE
RANGE
–40 to +85
°C
NOTE:
The device has five voltage output options, indicated by the
XX
on
the Type Number.
XX
25
28
30
33
36
VOLTAGE (Typical)
2.5 V
2.8 V
3.0 V
3.3 V
3.6 V
Part number marking
Each package is marked with a four letter code. The first three
letters designate the product. The fourth letter, represented by ‘x’, is
a date tracking code.
Part number
SA57000-25D
SA57000-28D
SA57000-30D
SA57000-33D
SA57000-36D
Marking
ABKx
ABLx
ABMx
ABNx
ABPx
PIN CONFIGURATION
PIN DESCRIPTION
PIN
SA57000-XX
SYMBOL
V
IN
GND
PWRON
DESCRIPTION
Regulator input. V
OUT(nom)
+ 0.1 V to 5.5 V.
No bypass capacitor required.
Ground.
Power-on input. Active-HIGH. A logic LOW
powers down regulator. The shutdown
quiescent current is typically 50 nA.
Connect to V
IN
for manual operation.
Power OK indicator, including thermal
warning. Trips (goes LOW) at 127
°C
(±2°),
or
when power falls typically 6% below
V
OUT(nom)
.
Regulator output. Sources up to 150 mA.
No bypass capacitors required.
1
2
3
4
PWROK
V
IN
1
5
V
OUT
GND
2
PWRON
3
SA00556
4
PWROK
Figure 2. Pin configuration.
5
V
OUT
MAXIMUM RATINGS
SYMBOL
V
IN
V
PWRON
V
OUT
T
amb
T
j
T
stg
P
R
th(j-a)
V
IN
to GND voltage
PWRON to GND voltage
OUT to GND voltage
Operating ambient temperature
Junction temperature
Storage temperature
Power dissipation
Thermal resistance from junction to ambient
PARAMETER
MIN.
–0.3
–0.3
–0.3
–40
–
–65
–
–
MAX.
5.5
5.5
V
IN
+ 0.3
+85
+150
+160
575
140
UNIT
V
dc
V
dc
V
dc
°C
°C
°C
mW
°C/W
2001 Aug 27
3
Philips Semiconductors
Product data
CapFREE™ 150 mA, low-noise, low dropout regulator
with thermal protection
SA57000-XX
CHARACTERISTICS
V
IN
= V
OUT(nom)
+ 0.5 V. (Note 1.)
SYMBOL
V
IN
PARAMETER
input voltage
output voltage accuracy
2
I
OUT
= 1 mA
T
amb
= +25
°C
–40
°C ≤
T
amb
≤
+85
°C
CONDITIONS
MIN.
V
OUT(nom)
–
–2.0
160
I
OUT
= 1 mA to 150 mA
I
OUT
= 1 mA
I
OUT
= 50 mA
I
OUT
= 150 mA
∆V
LNR
∆V
LDR
e
n
Shutdown
V
IH
V
IL
I
PWRON
PWRON input threshold
(HIGH ON-state)
PWRON input threshold
(HIGH ON-state)
PWRON input bias current
V
IN
→
V
OUT(nom)
→
5.5 V
V
IN
→
V
OUT(nom)
→
5.5 V
V
PWRON
= V
IN
T
amb
= +25
°C
T
amb
= +85
°C
V
OUT
= 0 V
T
amb
= +25
°C
T
amb
= +85
°C
I
OUT
= 1 mA, C
OUT
= 100 nF
T
amb
= +25
°C
T
amb
= –40 to +85
°C
0.7
×
V
IN
–
–
–
–
0.3
×
V
IN
V
V
line regulation
load regulation
output voltage noise
V
IN
= (V
OUT
+ 0.1 V) to 5.5 V; I
OUT
= 20 mA
I
OUT
= 1 mA to 150 mA
f = 10 Hz to 100 kHz, C
OUT
= 10
µF
–
–
–
–
–
–
–
TYP.
–
±1
–
300
85
1
55
165
–
0.01
30
MAX.
5.5
–
2.0
–
150
–
120
–
0.1
0.02
–
UNIT
V
%
%
mA
µA
mV
mV
mV
%/V
%/mA
µV
RMS
I
LIM
I
Q
current limit
ground pin current
dropout voltage
3
–
–
–
–
–
–
0.01
0.05
0.05
0.2
25
35
1
–
1
1
100
200
µA
µA
µA
µA
µs
µs
I
Q(SHDN)
shutdown supply current
t
PWRON
power-on start-up time
4
Thermal protection (Note 2)
T
SHDN
∆T
SHDN
thermal shut-down temperature
thermal shut-down hysteresis
–
–
144
13
–
–
°C
°C
PWROK output (power and temperature OK) (Note 2)
PWROK trip temperature
PWROK trip temperature
hysteresis
PWROK trip as percentage of
V
OUT(nom)
PWROK hysteresis as
percentage of V
OUT(nom)
PWROK output (when tripped)
I
SINK
= 0.5 mA
–
–
–3.5
–
–
127
12
–6
2
0.1
–
–
–8
–
0.4
°C
°C
%
%
V
NOTES:
1. Limits are production tested at T
amb
= +25
°C.
All devices are 100% production tested at 25
°C.
Limits over the operating tempreature are
guaranteed by design.
2. Accuracy
±2 °C
over temperature range guaranteed by design and characterization.
3. The dropout voltage is defined as V
IN
– V
OUT,
where V
OUT
is 100 mV below the value of V
OUT
for V
IN
= V
OUT
+ 0.5 V..
4. Time needed for V
OUT
to reach 95% of V
OUT(nom)
.
2001 Aug 27
4
Philips Semiconductors
Product data
CapFREE™ 150 mA, low-noise, low dropout regulator
with thermal protection
SA57000-XX
TYPCIAL PERFORMANCE CURVES
Measurements taken with the SA57000-33 (3.3 volt output).
3.40
I
LOAD
= 50 mA
V
IN
= V
OUT(nom)
+ 0.5 V
V
OUT
, OUTPUT VOLTAGE (V)
GROUND CURRENT (
µ
A)
3.38
80
100
3.36
60
3.34
40
3.32
20
V
IN
= V
OUT(nom)
+ 0.5 V
I
LOAD
= 50 mA
3.30
–40
–20
0
20
40
60
80
100
0
–40
–20
0
20
40
60
80
100
T
amb
, TEMPERATURE
〈°C)
T
amb
, TEMPERATURE
〈°C)
SL01515
SL01516
Figure 3. Output voltage versus temperature.
Figure 4. Ground current versus temperature.
0
0
LOAD CURRENT = 50 mA
–100
GROUND CURRENT (
µ
A)
GROUND CURRENT (
µ
A)
2.0
3.0
4.0
5.0
6.0
–100
–200
–200
–300
–300
–400
–400
–500
–500
–600
1.0
–600
1.0
2.0
3.0
4.0
5.0
6.0
V
IN
, INPUT VOLTAGE (V)
V
IN
, INPUT VOLTAGE (V)
SL01517
SL01518
Figure 5. Ground current versus input voltage (no load).
Figure 6. Ground current versus input voltage with load.
2001 Aug 27
5
测试/测量
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