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参数资料
型号： LX1661CD-TR
厂商： MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP
元件分类： 稳压器
英文描述： 1.5 A SWITCHING CONTROLLER, PDIP16
封装： LEAD FREE, PLASTIC, DIP-16
文件页数： 9/15页
文件大小： 376K
代理商： LX1661CD-TR
A D V ANCED PWM C ONTROLLER
LX1660/1661
PRODUCT DA T ABOOK 1996/1997
3
Copyright 1998
Rev. 1.1a 10/25/2004
P RODUCTION D AT A S HEET
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, 10.8 < V
CC < 13.2, 0°C ≤ TA ≤ 85°C.
Test conditions: V
CC = 12V, T = 25°C.)
Reference Section
Parameter
Symbol
Test Conditions
Initial Output Voltage
V
CC = 12V, I L = 100A
Load Regulation
V
CC = 12V, IL = 10A to 5mA
Short Circuit Current I
SH
V
REF = 1.96V
LX1661
Units
Min. Typ. Max. Min. Typ. Max.
LX1660
1.98
2
2.02 1.98
2
2.02
V
22
mV
24
mA
Timing Section
Off Time Initial
OT
ADJ = 1.8V, CT = 390pF
OT
ADJ = 3.5V, CT = 390pF
Off Time Temp Stability
OT
ADJ = 1.8V to 3.5V
Discharging Current
I
DIS
V
NINV = 1.8V, V CT = 1.5V
V
NINV = 3.5V, V CT = 1.75V
Ramp Peak
V
P
Ramp Peak-Valley
V
RPP
OT
ADJ = 1.8V
OT
ADJ = 3.5V
Ramp Valley Delay to Output
10% Overdrive
Turn Off Threshold
V
OFF
(Voltage at OT
ADJ Pin)
22
S
11
S
22
%
180
210
240
180
210
240
A
180
210
240
180
210
240
A
22
V
0.8
0.9
1.0
0.8
0.9
1.0
V
0.475 0.5 0.525 0.475 0.5 0.525
V
100
nS
0.6
0.9
1.2
0.6
0.9
1.2
V
Input Bias Current
I
B
1.8V < V
CS+ = VCS < 3.5V
Pulse By Pulse C
L
V
CLP
Initial Accuracy
C
S Delay to Output
10% Overdrive
Error Comparator Section
Synchronous Control Section
Synchronous Enable Threshold
S
YCEN
Current Sense Section
0.1
1.0
0.1
1.0
A
2
364248
mV
150
nS
0.5
0.7
0.9
0.5
0.7
0.9
V
0.1
1
0.1
1
A
80
90
100
80
90
100
mV
150
nS
Input Bias Current
I
B
V
FB = VSET
Input Offset Voltage
V
IO
E
C Delay to Output
10% Overdrive
Output Drivers Section
Output Rise Time
T
R
V
CL = V C2 = 12V, CL = 3000pF
Output Fall Time
T
F
V
CL = V C2 = 12V, CL = 3000pF
Output Pull Down
V
PD
V
CC = VC = 0, IPULL UP = 2mA
Peak Current
I
PK
t
PULSE = 500ns
70
nSec
70
nSec
11
V
1.0
A
UVLO and S.S. Section
Start-Up Threshold
V
ST
Hysteresis
V
HYST
S.S. Sink Current
I
SD
V
CL = 10.1V
S.S. Sat Voltage
V
OL
V
CL = 9V, ISD = 20A
Enable Shutdown Threshold
V
EN
Enable Bias Current
I
EN
I
EN (Low), VEN = 0V
I
EN (High), V EN = 2V
Enable Hysteresis
9.85 10.15 10.45 9.85 10.15 10.45
V
0.31
V
23
mA
0.2
0.6
0.2
0.6
V
1.3
1.4
1.5
1.3
1.4
1.5
V
-0.5
-1
-0.5
-1
A
0.5
1
0.5
1
A
0.14 0.16 0.18 0.14 0.16 0.18
V
Supply Current Section
Dynamic Operating Current
I
CD
V
CC = V C = 12V, Out Freq = 200kHz, CL = 0
Start-Up Current
I
ST
V
CL = 10V
25
mA
500 1000
A
Hiccup Section
Hiccup Factor “ON” Time
(C
HICCUP = 0.1F typ.)
Hiccup Duty Cycle
100
mS/F
10
%
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