参数资料
| 型号： | SI9120DY-E3 |
| 厂商： | Vishay Siliconix |
| 文件页数： | 1/10页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR UNIV SWMODE 16SOIC |
| 标准包装： | 500 |
| 输出隔离： | 隔离 |
| 频率范围： | 40kHz ~ 1MHz |
| 输入电压： | 9.5 V ~ 13.5 V |
| 输出电压： | 4V |
| 功率（瓦特）： | 900mW |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SOIC |
| 包装： | 散装 |
Si9120
Vishay Siliconix
Universal Input Switchmode Controller
FEATURES
D 10- to 450-V Input Range
D Current-Mode Control
DESCRIPTION
D 125-mA Output Drive
D Internal Start-Up Circuit
D Internal Oscillator (1 MHz)
D SHUTDOWN and RESET
The Si9120 is a BiC/DMOS integrated circuit designed for use
in low-power, high-efficiency off-line power supplies.
High-voltage DMOS inputs allow the controller to work over a
wide range of input voltages (10- to 450-VDC). Current-mode
PWM control circuitry is implemented in CMOS to reduce
quiescent current to less than 1.5 mA.
A CMOS output driver provides high-speed switching for
MOSFET devices with gate charge, Q g , up to 25 nC, enough
FUNCTIONAL BLOCK DIAGRAM
to supply 30 W of output power at 100 kHz. These devices,
when combined with an output MOSFET and transformer, can
be used to implement single-ended power converter
topologies (i.e., flyback and forward).
The Si9120 is available in both standard and lead (Pb)-free
16-pin plastic DIP and SOIC packages which are specified to
operate over the industrial temperature range of ? 40 _ C to
85 _ C.
FB
15
COMP
14
DISCHARGE
10
OSC
IN
9
OSC
OUT
8
V REF
11
Ref
Gen
Error
Amplifier
?
+
4 V (1%)
2V
?
+
+
?
Current-Mode
Comparator
C/L
Comparator
OSC
Clock ( 1 / 2 f OSC )
R
Q
S
To
V CC
5
6
OUTPUT
? V IN
1.2 V
BIAS
V CC
16
7
Current
Sources
To
Internal
Circuits
V CC
4
SENSE
+V IN
1
8.1 V
?
+
Undervoltage Comparator
Q
S
R
12
13
SHUTDOWN
RESET
?
+
8.6 V
Pre-Regulator/Start-Up
Applications information, see AN707 and AN708.
Document Number: 70006
S-42042—Rev. H, 15-Nov-04
www.vishay.com
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SI9120DY-T1 | 功能描述:电流型 PWM 控制器 Univ-Input Swmode Controller RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| SI9120DY-T1-E3 | 功能描述:电流型 PWM 控制器 Univ-Input Swmode Controller RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| SI9120DY-T1-E3 | 制造商:Vishay Siliconix 功能描述:Voltage Regulator IC |
| SI9121 | 制造商:VISHAY 制造商全称:Vishay Siliconix 功能描述:High-Voltage, Non-Isolated Buck-Boost Converter for ISDN Digital Phones |
| SI9121DB-3 | 功能描述:电源管理IC开发工具 SI9121 Demo Brd 3.3V RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
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