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| 型号： | SI9140CY-T1-E3 |
| 厂商： | Vishay Siliconix |
| 文件页数： | 1/19页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM 16-SOIC |
| 标准包装： | 2,500 |
| PWM 型： | 电流/电压模式 |
| 输出数： | 1 |
| 频率 - 最大： | 2MHz |
| 电源电压： | 3 V ~ 6.5 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | 0°C ~ 70°C |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 包装： | 带卷 (TR) |
Product is End of Life 3/2014
Si9140
Vishay Siliconix
MP Controller For High Performance Process Power Supplies
FEATURES
DESCRIPTION
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Runs on 3.3 or 5 V Supplies
Adjustable, High Precision Output Voltage
High Frequency Operation (> 1 MHz)
High Efficiency Synchronous Switching
Full Set of Protection Circuitry
2000 V ESD Rating (Si9140CQ/DQ)
Siliconix’ Si9140 Buck converter IC is a high-performance,
surface-mount switchmode controller made to power the
new generation of low-voltage, high-performance micropro-
cessors. The Si9140 has an input voltage range of 3 to 6.5 V
to simplify power supply designs in desktop PCs. Its high-fre-
quency switching capability and wide bandwidth feedback
loop provide tight, absolute static and transient load regula-
tion. Circuits using the Si9140 can be implemented with low-
profile, inexpensive inductors, and will dramatically minimize
power supply output and processor decoupling capacitance.
The Si9140 is designed to meet the stringent regulation
requirements of new and future high-frequency microproces-
sors, while improving the overall efficiency in new "green"
systems.
high-frequency, point-of-use buck converters an essential
part of any system design. These point-of-use converters
must operate at higher frequencies and provide wider feed-
back bandwidths than existing converters, which typically
operate at less than 250 kHz and have feedback bandwidths
of less than 50 kHz. The Si9140’s 100 kHz feedback loop
bandwidth ensures a minimum improvement of one-half the
required output/decoupling capacitance, resulting in a tre-
mendous reduction in board size and cost of implementation.
With the microprocessing power of any PC representing an
investment of hundreds of dollars, designers need to ensure
that the reliable operation of the processor will not be
affected by the power supply. The Si9140 provides this
assurance. A demo board, the Si9140DB, is available.
Today’s state-of-the-art microprocessors run at frequencies
over 100 MHz. Processor clock speeds are going up and so
are current requirements, but operating voltages are going
down. These simultaneous changes have made dedicated,
APPLICATION CIRCUIT
V IN
Si9140CQ-T1 and Si9140DQ-T1 are available in lead free.
+
C1
V CCP
R1
R2
R3
C3
2 x Si4435DY
L1
V OUT
2 x Si4410DY
D1
+
R4
Power-Good
U1
C2
C4
C5
C6
R6
R5
C7
1
2
3
4
5
6
7
8
Si9140
V DD V S
MON DR
V GOOD D S
COMP PGND
FB UVLO SET
NI C OSC
V REF R OSC
GND ENABLE
16
15
14
13
12
11
10
9
R13
R9
C8
C9
R7
R8
R10
0.1 %
R12
0.1 %
Document Number: 70026
S-40699-Rev. H, 19-Apr-04
C10
R11
www.vishay.com
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SI9140DQ | 制造商:VISHAY 制造商全称:Vishay Siliconix 功能描述:SMP Controller For High Performance Process Power Supplies |
| SI9140DQ-T1 | 功能描述:电压模式 PWM 控制器 Switching Power Supply Controller RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| SI9140DQ-T1-E3 | 功能描述:电压模式 PWM 控制器 SMP CONTROLLER RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| SI9140DY | 功能描述:电压模式 PWM 控制器 SMP Controller RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| SI9140DY-E3 | 功能描述:电压模式 PWM 控制器 Switching Power Supply Controller RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
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