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Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 5
Copyright
2000
Rev. 0.3m, 2005-04-12
WWW
.Microse
m
i
.CO
M
LX1672
Multiple Output LoadSHARE PWM
PRELIMINARY DATA SHEET
TM
ELECTRI CAL CHA RACTERI S TI CS
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
LX1672
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
UVLO AND SOFT-START (SS)
Start-Up Threshold (VCX), (VCCL)
3.5
4.0
4.5
V
Start-Up Threshold (VCC)
4.0
4.25
4.5
V
Hysteresis Vcc
0.1
V
SS Input Resistance
RSS
20
K
SS Shutdown Threshold
VSHDN
0.15
V
Hiccup Mode Duty Cycle
CSS = 0.1F
10
%
LINEAR REGULATOR CONTROLLER
Voltage Reference Tolerance
VLDFB = 0.8V, COUT = 330F
2
%
Source Current
IHDRV
Vout = 10V
30
mA
Sink Current
ILDRV
Vout = 0.4V
0.2
mA
DISABLE INPUT
1.0
V
PWM Disable
DISX
Pulldown Resistance
80
Κ
2.5
V
LDO Disable
LDDIS
Pulldown Resistance
100
K
Note 1 –X = Phase 1,2
Note 2 – System Specification
EE
LL
EE
CC
TT
RR
IICC
AA
LL
SS