SC4603(2004) Ver la hoja de datos (PDF) - Semtech Corporation

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SC4603
(Rev.:2004)

Very Low Input, MHz Operation, High Efficiency Synchronous Buck

Semtech Corporation 

SC4603

POWER MANAGEMENT

Electrical Characteristics (Cont.)

Unless otherwise specified, VCC = 3.3V, RT = 21Kohm, TA = -40°C to 85°C, TA = TJ.

Parameter

Test Conditions

N-channel and P-Channel Driver Outputs (Cont.)

NDRV Output Rise Time (1)

NDRV Output Fall Time (2)

Deadtime Delay

(PDRV high to NDRV high) (3)

Vgs = 3.3V, CCOMP = 1nF

Vgs = 3.3V, CCOMP = 1nF

Deadtime Delay

(NDRV low to PDRV low) (1)

Min

Typ

Max

Unit

8

ns

3

ns

adaptive

30

50

ns

Notes:

(1). Guaranteed by design.

(2). Guaranteed by characterization.

(3). Dead time delay from PDRV high to NDRV high is adaptive. As the phase node voltage drops below 600mV due to PDRV

high, NDRV will start to turn high.

 2004 Semtech Corp.

4

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