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| 型号： | SI9110DY-E3 |
| 厂商： | Vishay Siliconix |
| 文件页数： | 6/9页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR FLYBK CUK CM 14SOIC |
| 标准包装： | 550 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 3MHz |
| 占空比： | 50% |
| 电源电压： | 9.5 V ~ 13.5 V |
| 降压： | 无 |
| 升压： | 无 |
| 回扫： | 是 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 是 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 14-SOIC（0.154"，3.90mm 宽） |
| 包装： | 带卷 (TR) |
Si9110, Si9111
Vishay Siliconix
DETAILED DESCRIPTION (CONT’D)
Oscillator Section
Table 1. Truth Table for the SHUTDOWN and RESET Pins
The oscillator consists of a ring of CMOS inverters,
capacitors, and a capacitor discharge switch. Frequency is
set by an external resistor between the OSC IN and OSC
OUT pins. (See Figure 5 for details of resistor value vs.
frequency.) The DISCHARGE pin should be tied to - V IN for
normal internal oscillator operation. A frequency divider in
the logic section limits switch duty cycle to ? 50 % by locking
SHUTDOWN
H
H
L
L
RESET
H
H
L
L
Output
Normal Operation
Normal Operation (No Change)
Off (Not Latched)
Off (Latched)
Off (Latched, No Change)
the switching frequency to one half of the oscillator
frequency.
Both pins have internal current source pull-ups and should
Remote synchronization is accomplished by capacitive
coupling of a positive SYNC pulse into the OSC IN (pin 8)
terminal. For a 5 V pulse amplitude and 0.5 μs pulse width,
typical values would be 100 pF in series with 3 k ? to pin 8.
SHUTDOWN and RESET
SHUTDOWN (pin 11) and RESET (pin 12) are intended for
overriding the output MOSFET switch via external control
logic. The two inputs are fed through a latch preceding the
output switch. Depending on the logic state of RESET,
SHUTDOWN can be either a latched or unlatched input. The
output is off whenever SHUTDOWN is low. By
simultaneously having SHUTDOWN and RESET low, the
latch is set and SHUTDOWN has no effect until RESET goes
high. The truth table for these inputs is given in Table 1.
be left disconnected when not in use. An added feature of the
current sources is the ability to connect a capacitor and an
open-collector driver to the SHUTDOWN or RESET pins to
provide variable shutdown time.
Output Driver
The push-pull driver output has a typical on-resistance of
20 ? . Maximum switching times are specified at 75 ns for a
500 pF load. This is sufficient to directly drive MOSFETs
such as the 2N7004, 2N7005, IRFD120 and IRFD220.
Larger devices can be driven, but switching times will be
longer, resulting in higher switching losses. In order to drive
large MOSPOWER devices, it is necessary to use an
external driver IC, such as the Vishay Siliconix D469A. The
D469A can switch very large devices such as the
SMM20N50 (500 V, 0.3 ? ) in approximately 100 ns.
APPLICATIONS
1N5822
GND
2
OSC SYNC PULSE
(If Needed)
3k
220 μF
+5V
at 0.75 A
0.022 μF
100 pF
47 μF
0.1 μF
20 μF
13
8
1N5819
-5V
FEEDBACK
240 k
14
150 k
1N4148
at 0.25 A
V CC
6
10
Si9110
7
4
2N7004
1 μF
18 k
To Pin 6 V CC
Feedback
0.1 μF
390 k
1
5
9
3
1 Ω
1 / 2 W
12 k
To Pin 14
- 48 V
Figure 6. 5 Watt Power Supply for Telecom Applications
Vishay Siliconix maintains worldwide manufacturing capability. Products may be manufactured at one of several qualified locations. Reliability data for Silicon
Technology and Package Reliability represent a composite of all qualified locations. For related documents such as package/tape drawings, part marking, and
reliability data, see www.vishay.com/ppg?70004 .
www.vishay.com
6
Document Number: 70004
S11-0975-Rev. I, 16-May-11
This document is subject to change without notice.
THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SI9110DY-T1 | 功能描述:开关变换器、稳压器与控制器 1% High-Voltage Switchmode RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| SI9110DY-T1-E3 | 功能描述:开关变换器、稳压器与控制器 1% High-Voltage Switchmode RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| SI9110DYT1-E3 | 制造商:VISHAY 制造商全称:Vishay Siliconix 功能描述:High-Voltage Switchmode Controllers |
| SI9110DY-T1-E3 | 制造商:Vishay Siliconix 功能描述:Switchmode Controller IC |
| SI9111 | 制造商:VISHAY 制造商全称:Vishay Siliconix 功能描述:High-Voltage Switchmode Controllers |
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