APW7057K 데이터 시트보기 (PDF) - Anpec Electronics

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APW7057K

High Power Step-Down Synchronous DC/DC Controller

Anpec Electronics 

APW7057

Recommended Operating Conditions

Symbol

P a ra m e te r

VCC

VCC Supply Voltage

VOUT Output Voltage of the Switching Regulator (Note)

V IN

Input Voltage of the Switching Regulator (Note)

TA

Ambient Temperature

TJ

Junction Temperature



Note : Refer to the typical application circuit

Ra nge

5 ± 5%

0.8 ~ VCC

3.3 ~ VCC

0 ~ 70

0 ~ 125

Unit

V

V

V

oC

oC

Electrical Characteristics

Unless otherwise specified, these specifications apply over VCC=5V, VBOOT=12V and TA= 0~70 oC. Typical

values are at TA=25oC.

Symbol

Parameter

Test Conditions

APW7057

Unit

Min Typ Max

SUPPLY CURRENT

IVCC

VCC Nominal Supply

Current

UGATE and LGATE Open

2.1

mA

IBOOT

BOOT Nominal Supply

Current

UGATE Open

2.1

mA

Under Voltage Lockout(UVLO)

Rising VCC Threshold

4.0 4.2 4.4 V

Falling VCC Threshold

3.8 4.0 4.2 V

OSCILLATOR

FOSC Free Running Frequency

Ramp Upper Threshold

250 300 340 kHz

2.85

V

Ramp Lower Threshold

0.95

V

∆VOSC Ramp Amplitude

REFERENCE VOLTAGE

1.9

VP-P

VREF Reference Voltage

0.8

V

Reference Voltage

Accuracy

-1.5

+1.5 %

ERROR AMPLIFIER

DC Gain

75

dB

FP First Pole Frequency

10

Hz

FZ First Zero Frequency

1

kHz

UGATE Duty Range

0

100 %

FB Input Current

0.1 µA

Copyright  ANPEC Electronics Corp.

4

Rev. A.3 - Oct., 2003

www.anpec.com.tw

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