LX1681CDM-TR MICROSEMI [Microsemi Corporation], LX1681CDM-TR Datasheet - Page 3

• Manufacturer Part Number: LX1681CDM-TR
• Description: Voltage-Mode PWM Controllers
• Manufacturer: MICROSEMI [Microsemi Corporation]

Copyright © 2000
Rev. 1.1b,2005-03-09
Unless otherwise specified, the following specifications apply over the operating ambient temperature 0°C
otherwise noted. Test conditions: V
REFERENCE
Reference Voltage
OSCILLATOR
ERROR AMPLIFIER
CURRENT SENSE
OUTPUT DRIVERS
UVLO AND SOFT-START (SS)
SUPPLY CURRENT
Frequency
Ramp Amplitude
Input Resistance
Current Set
V
Current Sense Delayed
Drive Rise Time, Fall Time
Drive High
Drive Low
V
Hysteresis
SS Resistor
SS Output Enable
Hiccup Duty Cycle
V
Static Supply Current 12CV
5V
TRIP
CC5
CC12
Start-Up Threshold
TM
Dynamic Supply Current
Parameter
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
CC
=5V, V
E L E C T R I C A L C H A R A C T E R I S T I C S
Symbol
V
DC
F
T
I
V
I
T
V
V
V
R
V
I
R
RAMP
I
VCC
SET
VC1
OSC
CSD
CD
RF
DH
EN
C1
FB
DL
ST
SS
IN
HIC
=12V, T=25°C
Linfinity Microelectronics Division
V
V
V
V
Reference to V
C
I
I
V
C
Out Freq = 200kHz, C
> 0.3V
V
V
SOURCE
SINK
OUT
OUT
OUT
CS
C1
SS
SS
L
SS
=3000pF
> 4.0V
= V
=20mA, V
= 0.1µF, F
< 0.3V
> 0.3V
®
=V
=V
=V
Microsemi
=20mA, V
FB
FB
FB
CC
, T
, 0°C < T
–0.4V
A
=25°C
Test Conditions
C1
REQ
CC
=12V
C1
=100Hz
A
=12V
< 70°C
L
Voltage-Mode PWM Controllers
=3000pF, Synch., V
P
RODUCTION
SS
D
ATA
1.237
1.231
0.25
Min
170
≤
4.0
40
40
10
T
LX1681/1682
S
A
HEET
≤
1.25
1.25
4.25
0.10
Typ
190
70°C except where
1.1
0.1
0.3
20
45
45
50
11
20
10
24
10
5
LX1681/1682
1.262
1.269
Max
0.35
230
0.2
4.5
28
12
7
Units
VPP
µsec
kHz
mA
mA
mA
kΩ
kΩ
µA
µA
Ns
%
V
V
V
V
V
V
V
Page 3