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SG3842M 参数 Datasheet PDF下载

SG3842M图片预览
型号: SG3842M
PDF下载: 下载PDF文件 查看货源
内容描述: 电流模式PWM控制器 [CURRENT MODE PWM CONTROLLER]
分类和应用: 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
文件页数/大小: 14 页 / 308 K
品牌: MICROSEMI [ MICROSEMI CORPORATION ]
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SG1842/SG1843 Series
TM
®
C
URRENT
M
ODE
PWM C
ONTROLLER
P
R O D U C T I O N
D
A T A
S
H E E T
DESCRIPTION
The SG1842/43 family of control IC's provides all lockout, current limiting circuitry and start-up
the necessary features to implement off-line fixed current of less than 1mA. The totem-pole output
frequency, current-mode switching power supplies is optimized to drive the gate of a power
with a minimum number of external components. MOSFET. The output is low in the off state to
Current-mode architecture demonstrates improved provide direct interface to an N channel device.
line regulation, improved load regulation, pulse- The SG1842/43 is specified for operation over
by-pulse current limiting and inherent protection the full military ambient temperature range of -
of the power supply output switch. The bandgap 55°C to 125°C. The SG2842/43 is specified for
reference is trimmed to ±1% over temperature. the industrial range of -25°C to 85°C, and the
Oscillator discharge current is trimmed to less SG3842/43 is designed for the commercial range
than ±10%. The SG1842/43 has under-voltage of 0°C to 70°C.
IMPORTANT:
For the most current data, consult
MICROSEMI’s
website:
http://www.microsemi.com
KEY FEATURES
OPTIMIZED FOR OFF-LINE
CONTROL
LOW START-UP CURRENT (<1mA)
AUTOMATIC FEED FORWARD
COMPENSATION
TRIMMED OSCILLATOR
DISCHARGE CURRENT
PULSE-BY-PULSE CURRENT
LIMITING
ENHANCED LOAD RESPONSE
CHARACTERISTICS
UNDER-VOLTAGE LOCKOUT
WITH 6V HYSTERESIS (SG1842
only)
DOUBLE-PULSE SUPPRESSION
HIGH-CURRENT TOTEM-POLE
OUTPUT (1AMP PEAK)
INTERNALLY TRIMMED BANDGAP
REFERENCE
500KHZ OPERATION
UNDERVOLTAGE LOCKOUT
SG1842 - 16 volts
SG1843 - 8.4 volts
LOW SHOOT-THROUGH
CURRENT <75mA OVER
TEMPERATURE
HIGH RELIABILITY
FEATURES
AVAILABLE TO MIL-STD-883B AND
DSCC
SCHEDULED FOR MIL-M38510
QPL LISTING
RADIATION DATA AVAILABLE
Microsemi LEVEL "S" PROCESSING
AVAILABLE
PRODUCT HIGHLIGHT
R
ST
AC
INPUT
I
ST
V
CC
SG3842
PACKAGE ORDER INFO
T
A
(°C)
0 to 70
-25 to 85
-55 to
125
MIL-
STD/883
DESC
Plastic DIP
M
8-Pin
N
Plastic DIP
14-Pin
Plastic SOIC
DM
8-Pin
Plastic SOIC
D
14-Pin
Y
Ceramic Dip
8-Pin
J
Ceramic DIP
14-Pin
F
Cer Flatpack
10-Pin
L
Ceramic LCC
20-Pin
RoHS / Pb-free Transition DC: 0503
RoHS / Pb-free Transition DC:0440
SG3842M
SG3843M
SG2842M
SG2843M
SG3842N
SG3843N
SG2842N
SG2843N
SG3842DM
SG3843DM
SG2842DM
SG2843DM
SG3842D
SG3843D
SG2842D
SG2843D
SG3842Y
SG3843Y
SG2842Y
SG2843Y
SG1842Y
SG1843Y
SG1842Y/883B
SG1843Y/883B
SG1842Y/DESC
SG1843Y/DESC
SG3842J
SG3842J
SG2842J
SG2843J
SG1842J
SG1843J
SG1842J/883B
SG1843J/883B
SG1842J/DESC
SG1843J/DESC
SG1842F
SG1843F
SG1842F/883B
SG1843F/883B
SG1842F/DESC
SG1843F/DESC
SG1842L
SG1842L
SG1842L/883B
SG1843L/883B
SG1842L/DESC
SG1843L/DESC
Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. SG2843DM-TR)
Plastic packages are RoHS compliant
Copyright
©
2000
Rev. 1.6b 2010-03-15
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
1