LX1671 Ver la hoja de datos (PDF) - Microsemi Corporation
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LX1671 Datasheet PDF : 21 Pages
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LX1671
TM
®
Multiple Output LoadSHARE™ PWM
PRODUCTION DATA SHEET
ELECTRICAL CHARACTERISTICS (CONTINUED)
Unless otherwise specified, the following specifications apply over the operating ambient temperature 0°C ≤ TA ≤ 70°C except where
otherwise noted and the following test conditions: VCC = 5V, VCCL = 5V, VCX = 12V , HOX = LOX = 3000pF Load.
Parameter
Symbol
Test Conditions
` UVLO AND SOFT-START (SS)
Start-Up Threshold (VCX VCCL )
Start-Up Threshold (VCC)
Hysteresis
(VCC)
SS Input Resistance
RSS
SS Shutdown Threshold
VSHDN
Hiccup Mode Duty Cycle
` LINEAR REGULATOR CONTROLLER
Voltage Reference Tolerance
Source Current
ILDGD
Sink Current
` DISABLE INPUT
ILDGD
LDO Disable
LDDIS
Note 1 – X = Phase 1, 2, 3
Note 2 – System Specification
CSS = 0.1μF
VLDFB = 0.8V, COUT = 330µF
VLDGD = 9V
Vout = 0.4V
Threshold
Pulldown Resistance
LX1671
Units
Min Typ Max
3.5
4.0
4.5
V
4.0 4.25 4.5
V
0.1
V
20
KΩ
0.3
V
10
%
2
%
6
ma
0.2
mA
2
V
100
ΚΩ
Copyright © 2000
Rev. 1.2b, 2006-02-13
Microsemi
Integrated Products, Power Management
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 5
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