LX1675 Ver la hoja de datos (PDF) - Microsemi Corporation
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LX1675 Datasheet PDF : 19 Pages
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LX1675
TM
®
Multiple Output LoadSHARE™ PWM
PRODUCTION DATA SHEET
ELECTRICAL CHARACTERISTICS (CONTINUED)
For the LX1675ILQ the following specifications apply over the ambient temperature -40°C < TA < 85°C and for the LX1675CLQ 0°C <
TA < 85°C except where otherwise noted and the following test conditions: VIN & VSLR = 12V, VCX = 17V, HOX and LOX =3000pF
Load, FS = 0 (f = 300KHz).
Parameter
` INTERNAL 5V REGULATOR
Symbol
Test Conditions
LX1675
Units
Min Typ Max
Regulated Output
` UVLO AND SOFT-START (SS)
VCCL Internal + External Load: 0mA < IVCCL < 50mA 4.5
5.5
V
Start-Up Threshold
(VCX, VCCL, VIN)
Rising
3.75
4.38
V
Hysteresis
0.30
V
SS Input Resistance
RSS
SS Shutdown Threshold
VSHDN
Hiccup Mode Duty Cycle
` LINEAR REGULATOR CONTROLLER
CSS = 0.1µF
20
KΩ
100
mV
6
%
Voltage Reference Tolerance
LDO Supply
IVSLR
VLDFB = 0.8V, COUT = 330µF
VSLR = 12V
3
%
4
mA
LDO Gate Drive
VOH, Output Source Current = 0.5mA
VOH, Output Source Current = 10mA
7.35
9.0
V
Source Current
Sink Current
LDO Output Voltage Range
Regulator Disable Threshold
Line Regulation
Load Regulation
` LOGIC INPUTS
ILDGD
ILDGD
VOUT4
VSSL
VLDGD = 7.5V
VLDGD = 0.4V
Note 2, 1V < VLDO – VOUT4 < 10V,
IVOUT4 = 50mA
Note 2
10
mA
0.25
mA
0.8
5.25
V
100
mV
-1
1
%
-1
1
%
Threshold Logic High
2
V
FS,SF
Threshold Logic Low
0.8
V
` THERMAL SHUTDOWN
TSD
Pulldown Resistance
Hiccup Mode Operation at Limit
100
KΩ
160
°C
Die Temperature
Note 1: X = Phase 1, 2, 3
Note 2: System Level Measurement; Closed Loop
Copyright © 2004
Rev. 1.2a, 2006-02-16
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 5
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