lx1660 Microsemi Corporation, lx1660 Datasheet - Page 3

• Manufacturer Part Number: lx1660
• Description: Advanced Pwm Controller
• Manufacturer: Microsemi Corporation

Copyright © 1998
Rev. 1.1
(Unless otherwise specified, 10.8 < V
Reference Section
Initial Output Voltage
Load Regulation
Short Circuit Current I
Timing Section
Off Time Initial
Off Time Temp Stability
Discharging Current
Ramp Peak
Ramp Peak-Valley
Ramp Valley Delay to Output
Turn Off Threshold
Error Comparator Section
Input Bias Current
Input Offset Voltage
E
Synchronous Control Section
Synchronous Enable Threshold
Current Sense Section
Input Bias Current
Pulse By Pulse C
C
Output Drivers Section
Output Rise Time
Output Fall Time
Output Pull Down
Peak Current
UVLO and S.S. Section
Start-Up Threshold
Hysteresis
S.S. Sink Current
S.S. Sat Voltage
Enable Shutdown Threshold
Enable Bias Current
Enable Hysteresis
Supply Current Section
Dynamic Operating Current
Start-Up Current
Hiccup Section
Hiccup Factor “ON” Time
Hiccup Duty Cycle
C
S
Delay to Output
Delay to Output
7/98
Parameter
L
SH
CC
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
< 13.2, 0°C
Symbol
S
V
V
V
V
OT
V
V
V
I
V
V
I
V
YCEN
I
HYST
I
I
I
T
T
DIS
I
I
RPP
OFF
CLP
PK
SD
EN
CD
ST
PD
OL
EN
B
IO
B
ST
P
R
F
P
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
A
R O D U C T I O N
D V A N C E D
10% Overdrive
V
V
V
OT
OT
OT
V
V
OT
OT
(Voltage at OT
V
10% Overdrive
1.8V < V
Initial Accuracy
10% Overdrive
V
V
V
t
V
V
I
I
V
V
(C
EN
EN
PULSE
T
CC
CC
REF
NINV
NINV
FB
CL
CL
CC
CL
CL
CC
CL
HICCUP
A
(Low), V
(High), V
ADJ
ADJ
ADJ
ADJ
ADJ
= V
= V
= 9V, I
= 10V
= 12V, I
= 12V, I
= V
= V
= V
= 10.1V
= 1.96V
= 1.8V, V
= 3.5V, V
= 500ns
= 1.8V, C
= 3.5V, C
= 1.8V to 3.5V
= 1.8V
= 3.5V
85°C. Test conditions: V
SET
C2
C2
C
C
= 0.1µF typ.)
= 0, I
= 12V, Out Freq = 200kHz, C
CS
= 12V, C
= 12V, C
SD
+ = V
L
L
EN
EN
= 20µA
= 100µA
= 10µA to 5mA
PULL UP
= 0V
CT
CT
= 2V
ADJ
T
T
Test Conditions
CS
= 1.5V
= 1.75V
P W M C
= 390pF
= 390pF
L
L
< 3.5V
Pin)
= 3000pF
= 3000pF
= 2mA
D
A T A
O N T R O L L E R
CC
= 12V, T = 25°C.)
L
S
= 0
H E E T
0.475 0.5 0.525 0.475 0.5 0.525
9.85 10.15 10.45 9.85 10.15 10.45
0.14 0.16 0.18 0.14 0.16 0.18
Min. Typ. Max. Min. Typ. Max.
1.98
180
180
0.8
0.6
0.5
1.3
80
2
LX1660
0.31
-0.5
210
210
100
150
150
500 1000
100
0.9
0.9
0.1
0.7
0.1
0.2
1.4
0.5
24
90
70
70
10
2
2
2
1
2
2
2
1
3
2.02 1.98
240
240
100
1.0
1.2
1.0
0.9
1.0
0.6
1.5
25
LX1660/1661
-1
1
1
180
180
0.8
0.6
0.5
1.3
36
80
2
LX1661
0.31
-0.5
210
210
100
150
150
500 1000
100
0.9
0.9
0.1
0.7
0.1
0.2
1.4
0.5
24
42
90
70
70
10
2
2
2
1
2
2
1
3
2.02
240
240
100
1.0
1.2
1.0
0.9
1.0
0.6
1.5
48
25
-1
1
1
Units
mS/µF
nSec
nSec
mA
mA
mA
mV
µA
µA
µA
mV
µA
mV
µA
µA
µA
µS
µS
nS
%
nS
nS
%
A
V
V
V
V
V
V
V
V
V
V
V
V
3