SC1403(2002) Просмотр технического описания (PDF) - Semtech Corporation

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SC1403
(Rev.:2002)

Mobile Multi-Output PWM Controller with Virtual Current Sense

Semtech Corporation 

SC1403

POWER MANAGEMENT

PRELIMINARY

Electrical Characteristics (Cont.)

Unless otherwise noted: V+ = 15V, both PWMs on, SYNC = 0V, VL load = 0mA, REF load = 0mA, PSAVE# = 0V, TA =-40 to 85°C. Typical values are at

TA = +25°C. Circuit = Typical Application Circuit

Parameter

Conditions

Min Typ Max Units

Input Leakage Current

ON3, PSAVE#, ON5, SHDN#, SYNC

(SEQ = 0V or VL)

+1

µA

Logic Output Low Voltage

RESET#, ISINK = 4mA

0.4

V

Logic Output High Current

RESET# = 3.5V

1

mA

ON5 Pull-Down Resistance

Gate Driver Sink/Source

Current

ON5, ON3 = 0V, SEQ = REF

DL3, DH3, DL5, DH5, forced to 2.5V

100

Ω

1

A

Gate Driver On-Resistance

Non-Overlap Threshold

High or low

PHASE3, PHASE5, DL3, or DL5

1.5

7

Ω

1.0

V

Non-Overlap Delay

Falling edge of DH to rising edge of DL

Falling edge of DL to rising edge of DH

(1V threshold on DH and DL,

no capacitance on DL or DH)

10 17 25 nsec

35 75 115 nsec

Note:

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

 2002 Semtech Corp.

5

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