參數(shù)資料
型號： LX1681
廠商： Microsemi Corporation
英文描述： VOLTAGE - MODE PWM CONTROLLERS
中文描述： 電壓-模式PWM控制器
文件頁數(shù)： 2/9頁
文件大小： 125K
代理商： LX1681
V
OLTAGE
-M
ODE
PWM C
ONTR OLLER S
LX 1681/ 1682
PRODUCT DATABOOK 1 9 9 6 / 1 9 9 7
Copyright 1999
Rev. 1.0 5/99
2
P
R O D U C T I O N
D
A T A
S
H E E T
Supply Voltage (V
C1
) ............................................................................................18V
Supply Voltage (V
) ..............................................................................................7V
Output Drive Peak Current Source (500ns).......................................................1.0A
Output Drive Peak Current Sink (500ns)...........................................................1.0A
Input Voltage (SS/ENABLE Pin) ............................................................. -0.3V to 6V
Operating Junction Temperature .................................................................... 150°C
Storage Temperature Range ........................................................... -65°C to +150°C
Lead Temperature (Soldering, 10 Seconds) .................................................... 300°C
Note 1. Exceeding these ratings could cause damage to the device. All voltages are with
respect to Ground. Currents are positive into, negative out of the specified
terminal.
DM PACKAGE:
THERMAL RESISTANCE-JUNCTION TO AMBIENT,
θ
JA
165°C/W
Junction Temperature Calculation: T
= T
+ (P
x
θ
).
The
θ
numbers are guidelines for the thermal performance of the device/pc-board
system. All of the above assume no ambient airflow.
TH ER M A L D A TA
A B S O LU TE M A X IM U M R A TIN G S
(Note 1)
PA CK A G E PIN OUTS
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
(
Unless otherwise specified, 4.75V < V
CC
< 5.25V and 10.8V < V
C1
< 13.2V, 0°C
≤
T
A
≤
70°C. Test conditions: V
CC
= 5V, V
C1
= 12V, T = 25°C.
)
Reference
Reference Voltage
Parameter
Symbol
Test Conditions
V
FB
V
OUT
= V
FB
, T
A
= 25°C
V
OUT
= V
FB
, 0°C
≤
T
A
≤
70°C
Oscillator
Frequency
Ramp Amplitude
Error Amplifier
Input Resistance
Current Sense
F
OSC
V
RAMP
Current Set
V
TRIP
Current Sense Delayed
Output Drivers
Drive Rise Time, Fall Time
Drive High
Drive Low
UVLO and Soft-Start (SS)
V
CC5
Start-Up Threshold
Hysteresis
SS Resistor
SS Output Enable
Hiccup Duty Cycle
Supply Current
V
CC12
Dynamic Supply Current
Static Supply Current
I
SET
V
CS
= V
CC
- 0.4V
Reference to V
CC
T
CSD
R
IN
V
OUT
= V
FB
T
RF
V
DH
V
DL
C
L
= 3000pF
I
SOURCE
= 20mA, V
C1
= 12V
I
SINK
= 20mA, V
C1
= 12V
V
ST
V
C1
> 4.0V
R
SS
V
EN
DC
HIC
C
SS
= 0.1μF, F
REQ
= 100Hz
I
CD
I
VC1
I
VCC
Out Freq = 200kHz, C
L
= 3000pF, Synch., V
SS
> 0.3V
V
SS
< 0.3V
V
SS
< 0.3V
12V
5V
Units
1.237
1.231
1.25
1.262
1.269
V
V
LX1681/1682
Min.
Typ.
Max.
170
190
1.25
230
kHz
V
PP
20
k
40
-460
45
-400
1.1
μA
mV
μsec
-340
50
11
0.1
ns
V
V
10
0.2
4.0
4.25
0.10
20
0.3
10
4.5
V
V
k
V
%
0.25
0.35
24
5
10
28
7
12
mA
mA
mA
DM PACKAGE
(Top View)
V
CC
CS
V
C1
TDRV
V
FB
SS
N.C. / GND*
GND / BDRV*
1
8
2
7
3
6
4
5
* Pin 3 = N.C. for LX1681, GND for LX1682
Pin 4 = GND for LX1681, BDRV for LX1682
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PDF描述
LX1681CDM VOLTAGE - MODE PWM CONTROLLERS
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相關代理商/技術參數(shù)
參數(shù)描述
LX1681_05 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:Voltage-Mode PWM Controllers
LX1681CDM 功能描述:IC REG CTRLR DIVIDER PWM 8-SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標準包裝:4,000 系列:- PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1.5MHz 占空比:66.7% 電源電壓:4.75 V ~ 5.25 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 85°C 封裝/外殼:40-VFQFN 裸露焊盤 包裝:帶卷 (TR)
LX1681CDMT 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:Voltage-Mode SMPS Controller
LX1681CDM-TR 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:Voltage-Mode PWM Controllers
LX1681IDM 功能描述:IC REG CTRLR DIVIDER PWM 8-SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標準包裝:4,000 系列:- PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1.5MHz 占空比:66.7% 電源電壓:4.75 V ~ 5.25 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 85°C 封裝/外殼:40-VFQFN 裸露焊盤 包裝:帶卷 (TR)
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