SC4624AMLTRT datasheet(5/19 Pages) SEMTECH

Part #	SC4624AMLTRT

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

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Manufacturer	SEMTECH [Semtech Corporation]

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 2008 Semtech Corp.

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SC4624A

POWER MANAGEMENT

Electrical Characteristics (Cont.)

Unless otherwise specified, V

IN= VCC=SYNC/EN=3.3V, ROSC=51.1KΩ, RISET=27.4KΩ, TA = -40°C to 85°C.

Parameter

Symbol

Conditions

Min

Typ

Max

Units

Error Amplifier (Cont.)

Output Voltage Low, COMP

FB = 0.6V, I

COMP = 1mA

0.1

0.25

V

Feedback Voltage

V

FB

0.4925

0.5

0.5075

V

Vcc = 2.3V to 5.5V

-2

+1

+2

%

Input Bias Current(1)

I

FB

FB=V

REF

300

nA

Power Switches

High-Side P-MOSFET

R

DSH(on)

V

IN=VCC=5V, ISOURCE = 1A, TA=TJ=25 °C

74

100

mΩ

Low Side N-MOSFET

R

DSL(on)

V

IN=VCC=5V, ISINK = 1A, TA=TJ=25 °C

47

85

mΩ

Power Good

PGood Voltage Low

V

PGL

I

PGOOD = 1mA

0.2

V

PGood Leakage Current

I

PGOOD

PGOOD = 5V

1

µ

A

PGood Delay Time(1)

T

D

Vout rising or Vout falling

1024

clks

PGood High Window

With respect to nominal output,

T

A=TJ=25 °C

+8

+10

+15

%

Note:

(1) Guaranteed by design.

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SC4624AMLTRT Datasheet(PDF) 5 Page - Semtech Corporation

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