ST1PS01 datasheet(10/20 Pages) STMICROELECTRONICS

Part #	ST1PS01

Description	400 mA nano-quiescent synchronous step-down converter with digital voltage selection and Power Good

PDF	20 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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10 / 20 page

Typical performance characteristics

Figure 4. Efficiency vs load, VOUT= 1.8 V

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

0.001

0.01

0.1

100

1000

Load current [mA]

VIN 2.8V

VIN 3.2V

VIN 3.6V

VIN 4.2V

VIN 5V

L = 2.2µH

COUT = 10µF

Figure 5. Efficiency vs VIN, VOUT= 1.8 V

60%

65%

70%

75%

80%

85%

90%

95%

2.5

3.5

4.5

5.5

Input Voltage [V]

Iout = 100µA

Iout = 1mA

Iout = 50mA

Iout = 100mA

Iout = 200mA

L = 2.2µH

COUT = 10µF

Figure 6. Efficiency vs load, VOUT= 3.3 V

20%

30%

40%

50%

60%

70%

80%

90%

100%

0.001

0.01

0.1

100

1000

Load current [mA]

VIN 3.6V

VIN 4.2V

VIN 5V

L = 2.2µH

COUT = 10µF

Figure 7. Efficiency vs VIN, VOUT= 3.3 V

60%

65%

70%

75%

80%

85%

90%

95%

100%

3.3

3.8

4.3

4.8

5.3

5.8

Input voltage [V]

Iout = 100µA

Iout = 1mA

Iout = 50mA

Iout = 100mA

Iout = 200mA

L = 2.2µH

COUT = 10µF

ST1PS01

Typical performance characteristics

DS12799 - Rev 5

page 10/20

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