SC1403 Просмотр технического описания (PDF) - Semtech Corporation

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SC1403

Mobile Multi-Output PWM Controller with Lossless Current Sense

Semtech Corporation 

SC1403

POWER MANAGEMENT

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

PSAVE#, ON5, SYNC

ON3 Input Leakage Current

SEQ = REF

ON3 = 15V

-1

1

µA

-2

2

SHDN# Input Leakage Current

SHDN# = 15V

-1

3

10

µA

Logic Output Low Voltage

RESET#, ISINK = 4mA

0.4

V

Logic Output High Current

RESET# = 3.5V

1

mA

ON5 Pull-down Resistance

ON5, RUN/ON3 = 0V, (SEQ = REF)

100

ohms

Gate Driver Sink/Source Current

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

1

A

Gate Driver On-Resistance

Non-Overlap Threshold

BST3 to DH3, DH3 to PHASE3,

BST5 to DH5, DH5 to PHASE5,

VL to DL3, DL3 to PGND,

VL to DL5, DL5 to PGND

PHASE3, PHASE5, DL3, or DL5

Shoot-through Delay

DHx falling edge to DLx rising edge

DLx falling edge to DHz rising edge

(1V threshold on DHx and DLx,

no external capacitance on DLx/DHx.)

Note:

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

(2) Applicable for TA = 0 to +85°C

1.5

7 ohms

1.0

V

10 17 25 nsec

35 75 115

 2004 Semtech Corp.

5

United States Patent No. 6,377,032

www.semtech.com

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