Microsemi
Integrated Products, Power Management
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 4
Copyright
2000
Rev. 0.5i, 2002-07-17
W
M
.
C
LX1671
Multiple Output LoadSHARE PWM
P
RELIMINARY
I N T E G R A T E D P R O D U C T S
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, the following specifications apply over the operating ambient temperature 0
°
C
≤
T
A
≤
70
°
C except where
otherwise noted and the following test conditions: V
CC
= 5V, V
CCL
= 5V, V
CX
= 12V HOX = LOX = 3000pF Load
LX1671
Typ
Parameter
Symbol
Test Conditions
Min
Max
Units
!
!
!
SWITCHING REGULATORS
V
CC
Static and Dynamic
T
A
=25
°
C
0
°
C
≤
T
A
≤
70
°
C
Common Mode Input Voltage = 1V
I Source = 2 mA
I Sink = 10uA
Input Offset Voltage < 20mV
0 and 3.5 V Common Mode Voltage
V
CSX
= V
VSX
– 0.3V , V
VSX
= 5V
Reference to VSX , V
VSX
= 5V
4.5
0.792
0.784
-1
-1
90
-6.0
3.8
0.1
45
260
5.5
16
0.808
0.816
1
1
250
6.0
100
3.5
55
340
V
V
mA
V
%
nS
%
mV
dB
MHz
V
mV
V
nA
μ
A
mV
nS
Input Voltage
V
CCL
, V
CX
I
CC
Operation Current
Reference Voltage
Line Regulation (Note 2)
Load Regulation (Note 2)
Minimum Pulse Width
Maximum Duty Cycle
ERROR AMPLIFIERS
Input Offset Voltage
DC Open Loop Gain
Unity Gain Bandwidth
High Output Voltage
Low Output Voltage
Input Common Mode Range
Input Bias Current
CURRENT SENSE
Current Sense Bias Current
Trip Threshold
Current Sense Delay
Current Sense Comparator
Operating Current
OUTPUT DRIVERS – N-CHANNEL MOSFETS
Low Side Driver Operating Current
High Side Driver Operating Current
Drive Rise Time, Fall Time
High Level Output Voltage
Low Level Output Voltage
OSCILLATOR
PWM Switching Frequency
Ramp Amplitude
12
0.8V
70
16
5.0
100
50
300
350
V
SS
Vos
UGBW
V
OH
V
OL
I
IN
I
SET
V
TRIP
T
CSD
I
CSX
Current into VSX pins
2
5
mA
!
!
I
VCCL
I
VCX
T
RF
V
DH
V
DL
F
SW
V
RAMP
Static
Static
C
L
= 3000pF
I
SOURCE
= 20mA,
V
CCL
= 12V
I
SINK
= 20mA,
V
CCL
= 12V
2.5
3
50
11
0.15
300
1.25
mA
mA
nS
V
V
KHz
V
PP
10
255
0.25
345
E
L
E
C
T
R
I
C
A
L
S