SA57254-50GW datasheet(7/18 Pages) PHILIPS

Part #	SA57254-50GW

Description	CMOS switching regulator (PWM controlled)

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Manufacturer	PHILIPS [NXP Semiconductors]

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Philips Semiconductors

Product data

SA57254-XX

CMOS switching regulator (PWM controlled)

2003 Nov 11

7

IOUT

LOAD CURRENT

(20 mA/div)

VOUT

OUTPUT VOLTAGE

(50 mV/div)

t (5 ms/div)

SL01478

IOUT: 50 mA → 100 µA; VIN = 1.8 V

Figure 14. Output load regulation, decreasing current.

VIN

INPUT VOLTAGE

(500 mV/div)

VOUT

OUTPUT VOLTAGE

(50 mV/div)

t (100

µs/div)

SL01479

VIN: 1.8 V → 2.4 V; IOUT = 50 mA

Figure 15. Input line regulation, increasing voltage.

VIN

INPUT VOLTAGE

(500 mV/div)

VOUT

OUTPUT VOLTAGE

(50 mV/div)

t (200

µs/div)

SL01480

VIN: 2.4 V → 1.8 V; IOUT = 50 mA

Figure 16. Input line regulation, decreasing voltage.

SL01481

IOUT, OUTPUT CURRENT (mA)

0

1

23

4

5

67

8

9

10

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

VST1

VDO

Figure 17. Output current versus starting voltage.

SL01482

IOUT, OUTPUT CURRENT (mA)

0

1

23

4

5

67

8

9

10

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

VST1

VDO

Figure 18. Input voltage versus output current.

SL01483

VIN, INPUT VOLTAGE (V)

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

0

50

100

150

200

250

300

350

400

450

500

VOUT = 2 V

VOUT = 3 V

VOUT = 5 V

Figure 19. Input voltage versus supply current.

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