APW7143 查看數據表（PDF） - Anpec Electronics

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APW7143

3A, 12V, Asynchronous Buck Converter

Anpec Electronics 

APW7143

Electrical Characteristics (Cont.)

Refer to the typical application circuits. These specifications apply over VIN=12V, VOUT=3.3V, and TA= -40 ~ 85°C, unless otherwise

specified. Typical values are at TA=25°C.

Symbol

Parameter

Test Conditions

APW7143

Unit

Min

Typ

Max

Current-Sense to COMP Voltage

Transresistance

-

0.06

-

V/A

P-Channel Switch Resistance

PROTECTIONS

VIN = 5V, TJ= 25°C

VIN = 12V, TJ= 25°C

-

90

110

mΩ

-

70

90

ILIM

VTH_UV

TOTP

P-Channel Switch Current-limit

FB Under-Voltage Threshold

FB Under-Voltage Debounce

Over-Temperature Trip Point

Over-Temperature Hysteresis

Peak Current

VFB falling

5.0

6.5

8.0

A

45

50

55

%

-

1

-

µs

-

150

-

oC

-

40

-

oC

SOFT-START, SOFTSTOP, ENABLE AND INPUT CURRENTS

TSS

Soft-Start

LX Pull-Low Switch Resistance

1.5

2

2.5

ms

Switch is turned on for 2 ms (typ.)

interval from the falling edge of

-

10

-

Ω

enable signal.

EN Shutdown Voltage Threshold

VEN falling

0.5

-

-

V

EN Enable Voltage Threshold

-

-

2.1

V

P-Channel Switch Leakage Current VEN = 0V, VLX = 0V

-

-

2

µA

IFB

FB Pin Input Current

IEN

EN Pin Input Current

VEN = 0V ~ VIN

-100

-

+100

nA

-100

-

+100

nA

Copyright © ANPEC Electronics Corp.

4

Rev. A.1 - Apr., 2008

www.anpec.com.tw

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