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

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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

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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

Philips Semiconductors Product data

Micropower 150 mA, low-noise, low dropout linear
regulator with on/off

TYPICAL PERFORMANCE CURVES

Shown for the SA57031-28UK only; T

3.0
IO = 1mA

2.5

2.0

1.5

1.0

OUTPUT VOLTAGE (V)

0.5

0

0123456

IO = 30 mA

INPUT VOLTAGE VI(V)

Figure 3. Output voltage versus input voltage.

= 25 °C; VI = VO + 1 V; V

amb

IO = 100 mA

SL01970

= VI; Cin = 2.2 µF, C

On/Off

LOAD REGULATION Vload(mV)

150

100

–50

–100

–150

SA57031-XX

= 2.2 µF unless otherwise specified

O

50

0

0 50 100 150

OUTPUT CURRENT IO(mA)

Figure 6. Load regulation versus load current.

SL01973

50

µ

45

( A)

40

DD

35
30
25
20
15
10

5

NO-LOAD INPUT CURRENT I

0

0123456

INPUT VOLTAGE VI(V)

Figure 4. No-load input current versus input voltage.

1.0

0.8

0.6

0.4

0.2

–0.0
–0.2
–0.4
–0.6

LINE REGULATION Vline (mV)

–0.8

–1

3 3.5 4.0 4.5 5.0 5.5 6.0

IO = 30 mA

SL01971

0.4

0.3

0.2

0.1

DROPOUT VOLTAGE Vio(V)

0

0 50 100 150

VI = 2.6 V, IO = 10 mA

OUTPUT CURRENT IO(mA)

Figure 7. Dropout voltage versus output current.

3.0

2.5

2.0

1.5

1.0

OUTPUT VOLTAGE Vo(V)

0.5

0

0 100 200 300 400

VI = 5.0 V

VI = 6.0 V

VI = 3.8 V

SL01974

Figure 5. Line regulation versus input voltage.

2003 Jun 23

INPUT VOLTAGE VI(V)

SL01972

OUTPUT CURRENT IO(mA)

SL01975

Figure 8. Current limit versus output current.

5

Philips Semiconductors Product data

Micropower 150 mA, low-noise, low dropout linear
regulator with on/off

100

µ

90

( A)

80
70
60
50
40

GND PIN CURRENT

30
20
10

0

0 25 50 75 100 125 150

OUTPUT CURRENT (mA)

SL01976

Figure 9. Ground pin current.

–10
–20
–30
–40
–50
–60
–70

RIPPLE REJECTION (dB)

–80
–90

SA57031-XX

0

IO = 100 mA

IO = 150 mA

IO = 30 mA

IO = 1 mA

0.01 0.10 1.00 10.00 100.00 1000.00

FREQUENCY (kHz)

SL01978

Figure 11. Ripple rejection.

2.84

2.82

2.80

2.78

2.76

OUTPUT VOLTAGE Vo(V)

2.74

2.72
–50 –25 0 25 50 75 100 125

TEMPERATURE T(°C)

SL01977

Figure 10. Output voltage versus ambient temperatures.

10 µS

V

on/off

Figure 12. On/off control pin.

VO = 2.8 V

= 2 V

SL01991

2003 Jun 23

6

Philips Semiconductors Product data

Micropower 150 mA, low-noise, low dropout linear
regulator with on/off

VI = 4.8 V

VI = 3.8 V

200 µS

VI = 2 V/div
VO = 10 mV/div

SL01992

Figure 13. Line transient response.

SA57031-XX

IO = 100 mA

IO = 0.1 mA

500 µS

Figure 15. Load transient response.

C

= 1.0 µF

O

IO = 50 mA/div
VO = 10 mV/div

SL01994

IO = 100 mA

IO = 0.1 mA

500 µS

Figure 14. Load transient response.

C

= 2.2 µF

O

IO = 50 mA/div
VO = 10 mV/div

SL01993

2003 Jun 23

7

Philips Semiconductors Product data

Micropower 150 mA, low-noise, low dropout linear
regulator with on/off

TECHNICAL DISCUSSION

As illustrated in Figure 16, the SA57031 consists of a band-gap
voltage reference, an error amplifier, P-channel pass transistor ,
current limit circuit and an internal feedback voltage divider. The
output voltage is fed back through an internal resistor voltage divider
connected to the V

O pin.

The reference is connected to the error amplifier’s inverting input.
The error amplifier compares the reference with the feedback

SA57031-XX

V

3

I

V

REF

voltage and amplifies the difference. If the feedback voltage is lower
than the reference voltage, the pass transistor’s gate is pulled lower,
which allows more current to pass to the output and increase the
output voltage. If the feedback voltage is too high, the pass
transistor gate is pulled up, allowing less current to pass to the
output, resulting in a decrease in output voltage.

CURRENT

LIMITER

SA57031-XX

2

V

O

ON/OFF

4 1

Figure 16. Block diagram (bottom view).

GND

SA00634

2003 Jun 23

8

Philips Semiconductors Product data

Micropower 150 mA, low-noise, low dropout linear
regulator with on/off

APPLICATION INFORMATION

The following points have to be kept in mind for good performance
while using these devices.

Input Capacitor

An input capacitor of 2.2 µF is required between the SA57031 input
pin and the circuit ground. This capacitor must be located as close
as possible to the V

I or GND pin (not more than 1 cm away from the

pin) and returned to a clean analog ground. Any good quality
ceramic, tantalum, or film capacitor will work.

Output Capacitor

Phase compensation is used for securing stable operation even if
the load current varies. For this reason, an output capacitor with

ON/OFF PIN MUST BE ACTIVELY TERMINATED

ON

OFF

A2

SA57031-XX

GND

A1 B1

good frequency characteristics is needed. Set it as close to the
circuit as possible and make the wiring as short as possible. The
value of the output capacitance has to be at least 2.2µF and has to
have B-type temperature characteristics.

ON/OFF (Chip Enable) Pin

The ON/OFF pin must be actively terminated, not floating. If the
function is not needed, the pin should be tied to V
enable the device.

Line Impedance of VI and GND

The VI and GND lines should be sufficiently wide to minimize
impedance. If the impedance of these lines is high, there is a chance
to pick up noise or malfunction.

V

I

B2

2.2 µF

C

I

+

DC

2.0 V TO 6.0 V

–

SA57031-XX

I to permanently

V

O

R

LOAD

A

V

C

O

C

= 2.2 mF for VO = 2.5 to 5.0 V

O

CO = 4.7 mF for VO = 1.8 to 2.5 V

Figure 17. Typical application circuit.

SA00632

2003 Jun 23

9

Philips Semiconductors Product data

Micropower 150 mA, low-noise, low dropout linear
regulator with on/off

PACKING METHOD

The SA57031-XX is packed in reels, as shown in Figure 18.

BAG

MOISTURE CAUTION

PRINT

GUARD BAND

BARCODE LABEL

BARCODE LABEL

ESD PRINT

DRY-AGENT

TAPE

RELATIVE HUMIDITY

INDICATOR

REEL ASSEMBLY

SA57031-XX

ESD EMBOSSED

PRE-PRINTED HYATT PATENT

PRINTED PLANO BOX

PRINTED ESD WARNING

SPACE FOR ADDITIONAL LABEL

BARCODE LABEL

DRYPACK ID STICKER

PRINTED PLANO BOX

2003 Jun 23

QA SEAL

SL01962

Figure 18. Tape and reel packing method

10

Philips Semiconductors Product data

Micropower 150 mA, low-noise, low dropout linear
regulator with on/off

TAPE PULL OUT DIRECTION

T

B0

K

A0

NOTES:

1. IC pull out direction

B HOUSING

P2 P0

P1

TAPE PULL OUT DIRECTION

TOP VIEW

SA57031-XX

D0

E

F

W

2. Carrier tape material:
paper type, with ESD protection.

3. The length of the leader:

More than 400 mm which include 40 holes or more without any products.
IT’s must have the top cover tape.

4. The length of trailer:

More than 40 mm which include without any products.
IT’s must have the top copy tape.
The end of trailer must be detached from reel.

UNIT A0 B0 W F E P1 P2

0.90 1.40 8.0 3.5 1.75 4.0 2.0

mm

"0.03 "0.03 "0.1 "0.05 "0.05 "0.05 "0.05 "0.1 "0.03 "0.03 "0.03

P0

ΘD0

4.0

1.55T0.60K0.58

SL02002

2003 Jun 23

11

Philips Semiconductors Product data

Micropower 150 mA, low-noise, low dropout linear
regulator with on/off

WL-CSP4: wafer level, chip-scale package; 4 bumps

X3

X4

X5

X6

X7

X1

X9

X8

SA57031-XX

X2

BUMP

DIMENSIONS (mm are the original dimensions)

UNIT X1 X2 X3 X4 X5 X6 X7

mm

1.32

1.26

0.82

0.76

0.5 0.5 0.866 0.212 0.433

X8

0.23

0.13

X9

0.42

0.38

X10

X10

0.10

0.06

SL02098

2003 Jun 23

12

Philips Semiconductors Product data

Micropower 150 mA, low-noise, low dropout linear

SA57031-XX

regulator with on/off

REVISION HISTORY

Rev Date Description

_2 20030623 Product data (9397 750 11664); ECN 853-2361 30063 dated 23 June 2003.

_1 20030224 Product data (9397 750 11001); ECN 853-2361 28634 dated 2002 Jul 18

Data sheet status

Level

I

II

III

[1] Please consult the most recently issued data sheet before initiating or completing a design.
[2] The product status of the device(s) described in this data sheet may have changed since this data sheet was published. The latest information is available on the Internet at URL

[3] For data sheets describing multiple type numbers, the highest-level product status determines the data sheet status.

Data sheet status

Objective data

Preliminary data

Product data

http://www.semiconductors.philips.com.

Supersedes SA57031-XX_1 (9397 750 11001) of 2003 Feb 24.

Modifications:

•WL-CSP4 package outline dimensional drawing modified.

[1]

Product

[2] [3]

status

Development

Qualification

Production

Definitions

This data sheet contains data from the objective specification for product development.
Philips Semiconductors reserves the right to change the specification in any manner without notice.

This data sheet contains data from the preliminary specification. Supplementary data will be published

at a later date. Philips Semiconductors reserves the right to change the specification without notice, in
order to improve the design and supply the best possible product.

This data sheet contains data from the product specification. Philips Semiconductors reserves the

right to make changes at any time in order to improve the design, manufacturing and supply. Relevant

changes will be communicated via a Customer Product/Process Change Notification (CPCN).

Definitions

Short-form specification — The data in a short-form specification is extracted from a full data sheet with the same type number and title. For detailed information see

the relevant data sheet or data handbook.
Limiting values definition — Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 60134). Stress above one or more of the limiting

values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given
in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability.

Application information — Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make no
representation or warranty that such applications will be suitable for the specified use without further testing or modification.

Disclaimers

Life support — These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be

expected to result in personal injury . Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree
to fully indemnify Philips Semiconductors for any damages resulting from such application.

Right to make changes — Philips Semiconductors reserves the right to make changes in the products—including circuits, standard cells, and/or software—described
or contained herein in order to improve design and/or performance. When the product is in full production (status ‘Production’), relevant changes will be communicated
via a Customer Product/Process Change Notification (CPCN). Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys
no license or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent,
copyright, or mask work right infringement, unless otherwise specified.

Contact information

For additional information please visit
http://www.semiconductors.philips.com . Fax: [phone]

For sales offices addresses send e-mail to:
[email protected].

Document order number: 9397 750 11664

 Koninklijke Philips Electronics N.V. 2003

All rights reserved. Printed in U.S.A.

Date of release: 06-03

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

2003 Jun 23

13