SC2442 Просмотр технического описания (PDF) - Semtech Corporation

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SC2442

High Performance Wide Input Range Dual Synchronous Buck Controller

Semtech Corporation 

SC2442/H

POWER MANAGEMENT

Electrical Characteristics (Cont.)

Unless specified: TA = TJ = -40 to 125°C, VIN = 24V, VCC = 7V, Fc = 550KHz

Parameter

Symbol

Test Conditions

Gate Drive Outputs

High Side Gate Drive (1)

Low Side Gate Drive (1)

Gate Drive Rise Time

Gate Drive Fall Time

Maximum Duty Cycle

IGDH+, IGDH-

IGDL+, IGDL-

TRISE

TFALL

Dmax

Soure/Sink

Soure/Sink

COUT = 1000 pF

COUT = 1000 pF

For PWM1 and PWM2

Minimum Duty Cycle

Dmin

For PWM1 and PWM2

Dead Time Between Gate Drives

TDEAD

NOTES:

(1) Guaranteed by design, not tested in production

(2) This device is sensitive to ESD. Use of standard ESD handling precautions is required.

Min Typ Min Units

+0.5

A

+0.5

A

30

nS

30

nS

85 94

%

0

%

100

nS

Pin Configuration

AVCC

BDI

VIN

OC1

EA1

FB1

SS1

BST1

GD1H

PH1

GD1L

PGND

Top View

(24 Pin TSSOP)

Ordering Information

AGND

ROSC

SYNC/EN

OC2

EA2

FB2

SS2

BST2

GD2H

PH2

GD2L

PVCC

Part Number

SC2442ITSTR

SC2442HITSTR

SC2442ITSTRT (1)

SC2442HITSTRT (1)

Package

Temp. Range

(TA)

TSSOP-24 -40°C to +125°C

TSSOP-24 -40°C to +125°C

Notes:

Only available in tape and reel packaging. A reel

contains 2500 devices.

(1) Lead free devices

© 2007 Semtech Corp.

4

www.semtech.com

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