参数资料
型号: SG2843N
厂商: MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP
元件分类: 稳压器
英文描述: CURRENT MODE PWM CONTROLLER
中文描述: 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDIP14
封装: ROHS COMPLIANT, PLASTIC, DIP-14
文件页数: 14/14页
文件大小: 224K
代理商: SG2843N
C
U R R E N T
-M
O D E
PWM C
O N T R O L L E R
SG1842/SG1843 Series
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
Copyright 2000
Rev. 1.6 4/00
14
P
R O D U C T I O N
D
A T A
S
H E E T
T Y P I C A L A P P L I C AT I O N C I R C U I T S
(continued)
FIGURE 25.
— OFF-LINE FLYBACK REGULATOR
150k
100pF
V
FB
COMP
V
REF
R
T
/C
T
4700μF
10V
5V
2-5A
ISOLATION
BOUNDARY
0.01pF
400V
1N3613
820pF
2.5k
1
U
27
0.01μF
10μF
20V
1N3613
1k
470pF
0.85
USD 735
TI
220μF
250V
4.7 1W
673-3
AC
INPUT
V
CC
OUT
CUR
SEN
GND
SG1842
20k
3.6k
10k
.0047μF
0.01μF
16V
56k
1W
20k
T1: Coilcraft E - 4140 - b
Primary - 97 turns
single AWG 24
Secondary - 4 turns
4 parallel AWG 22
Control - 9 turns
3 parallel AWG 28
SPECIFICATIONS
Input line voltage:
Input frequency:
Switching frequency:
Output power:
Output voltage:
Output current:
Line regulation:
Load regulation:
Efficiency @ 25 Watts,
V
IN
= 90VAC:
V
= 130VAC:
Output short-circuit current:
90VAC to 130VAC
50 or 60Hz
40KHz ±10%
25W maximum
5V +5%
2 to 5A
0.01%/V
8%/A*
70%
65%
2.5Amp average
* This circuit uses a low-cost feedback scheme in which the DC
voltage developed from the primary-side control winding is
sensed by the SG1842 error amplifier. Load regulation is
therefore dependent on the coupling between secondary
and control windings, and on transformer leakage
inductance.
相关PDF资料
PDF描述
SG2843Y CURRENT MODE PWM CONTROLLER
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SG2842DM CURRENT MODE PWM CONTROLLER
SG2842J CURRENT MODE PWM CONTROLLER
SG2842M CURRENT MODE PWM CONTROLLER
相关代理商/技术参数
参数描述
SG2843Y 制造商:Microsemi Corporation 功能描述:SG2843Y - Bulk
SG2844D 制造商:Microsemi Corporation 功能描述:CURRENT MODE PWM CNTRLR 200MA 14SOIC - Bulk
SG2844DM 功能描述:IC PWM CURRENT MODE 8SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - AC-DC 转换器,离线开关 系列:- 标准包装:3,000 系列:- 输出隔离:隔离 频率范围:61kHz ~ 71kHz 输入电压:9.4 V ~ 28 V 输出电压:12V 功率(瓦特):- 工作温度:-40°C ~ 125°C 封装/外壳:SC-74,SOT-457 供应商设备封装:6-TSOP 包装:带卷 (TR)
SG2844J 制造商:Microsemi Corporation 功能描述:SG2844J - Bulk
SG2844M 功能描述:IC PWM CURRENT MODE 8DIP RoHS:是 类别:集成电路 (IC) >> PMIC - AC-DC 转换器,离线开关 系列:- 标准包装:3,000 系列:- 输出隔离:隔离 频率范围:61kHz ~ 71kHz 输入电压:9.4 V ~ 28 V 输出电压:12V 功率(瓦特):- 工作温度:-40°C ~ 125°C 封装/外壳:SC-74,SOT-457 供应商设备封装:6-TSOP 包装:带卷 (TR)