SC4624 데이터 시트보기 (PDF) - Semtech Corporation

부품명

상세내역

제조사

SC4624

Low Input Voltage, High Efficiency, 4A Integrated FET Synchronous Step down DC/DC Regulator

Semtech Corporation 

SC4624

POWER MANAGEMENT

Electrical Characteristics (Cont.)

Unless otherwise specified, VIN= VCC=SYNC/EN=3.3V, ROSC=51.1KΩ, RISET=27.4KΩ, TJ = -40°C to 125°C.

Parameter

Symbol

Conditions

Min Typ Max Units

Error Amplifier (Cont.)

Source Output Current, COMP

FB = 0.4V

20

mA

Sink Output Current, COMP

FB = 0.6V

25

mA

Output Voltage High, COMP

Output Voltage Low, COMP

Feedback Voltage

VFB

FB = 0.4V, ICOMP = -1mA

FB = 0.6V, ICOMP = 1mA

Vcc = 2.3V to 5.5V

2.5

V

0.1 0.25

V

0.4925 0.5 0.5075 V

-2

+1

+2

%

Input Bias Current(1)

IFB

Power Switches

FB=VREF

300 nA

High-Side P-MOSFET

Low Side N-MOSFET

Power Good

RDSH(on)

RDSL(on)

VIN=VCC=5V, ISOURCE = 1A, TA=TJ=25 °C

VIN=VCC=5V, ISINK = 1A, TA=TJ=25 °C

74

100 mΩ

47

85

mΩ

PGood Voltage Low

PGood Leakage Current

PGood Delay Time(1)

PGood High Window

VPGL

IPGOOD

TD

IPGOOD = 1mA

PGOOD = 5V

Vout rising or Vout falling

With respect to nominal output,

TA=TJ=25 °C

0.2

V

1

µA

1024

clks

+8

+10 +15

%

Note:

(1) Guaranteed by design.

 2008 Semtech Corp.



www.semtech.com

Share Link: