LX1671
I N T E G R A T E D
P R O D U C T S
Multiple Output LoadSHARE™ PWM
P
RODUCTION
D
ATA
S
HEET
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
Parameter
SWITCHING REGULATORS
Input Voltage
Operation Current
Reference Voltage
V
CC
V
CCL
, V
CX
I
CC
V
SS
Static and Dynamic
12
0.792
0.784
-1
-1
0.8V
0.808
0.816
1
1
250
Load = 3000pF
85
4.5
5.5
16
V
V
mA
V
V
%
%
nS
%
WWW .
Microsemi
.C
OM
Symbol
Test Conditions
Min
LX1671
Typ
Max
Units
T
A
=25°C
0°C
≤
T
A
≤
70°C
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
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
F
SW
V
RAMP
I
SET
V
TRIP
T
CSD
I
CSX
Current into VSX pins
V
CSX
= V
VSX
– 0.3V , V
VSX
= 5V
Reference to VSX , V
VSX
= 5V
I
IN
UGBW
V
OH
V
OL
I Source = 2 mA
I Sink = 10uA
Input Offset Voltage < 20mV
0 and 3.5 V Common Mode Voltage
Vos
Common Mode Input Voltage = 1V
-6.0
70
16
3.8
5.0
6.0
mV
dB
MHz
V
100
0.1
100
3.5
mV
V
nA
45
260
50
300
350
2
55
340
µA
mV
nS
5
mA
OUTPUT DRIVERS – N-CHANNEL MOSFETS
I
VCCL
I
VCX
T
RF
V
DH
V
DL
Static
Static
C
L
= 3000pF
I
SOURCE
= 20mA,
V
CCL
= 12V
I
SINK
= 20mA,
V
CCL
= 12V
10
2.5
3
50
11
0.15
0.25
mA
mA
nS
V
V
E
LECTRICALS
E
LECTRICALS
255
300
1.25
345
KHz
V
PP
Copyright
©
2000
Rev. 1.0a, 2004-06-14
Microsemi
Integrated Products, Power Management
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 4
MICROSEMI [ MICROSEMI CORPORATION ]
