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| 型号： | SI9145BY-T1-E3 |
| 厂商： | Vishay Siliconix |
| 文件页数： | 9/14页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BST PWM VM 16-SOIC |
| 标准包装： | 2,500 |
| PWM 型： | 电压模式 |
| 输出数： | 1 |
| 频率 - 最大： | 2MHz |
| 占空比： | 100% |
| 电源电压： | 2.7 V ~ 7 V |
| 降压： | 是 |
| 升压： | 是 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -25°C ~ 85°C |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 包装： | 带卷 (TR) |
Product is End of Life 3/2014
Si9145
Vishay Siliconix
Pin 9: R OSC
This pin is the equivalent of a 1.0 V voltage source derived
from the on-chip V REF . When a low T.C. resistor is externally
connected from this pin to GND, a temperature independent
current is generated internally. This current is used as the
charging current source connected to the C OSC pin. The cur-
rent is internally multiplied by 2 and is used as the discharg-
ing current source connected to the C OSC pin. Therefore, the
external resistor is one of the factors that determine the oscil-
lator frequency.
Pin 10: C OSC
An external capacitor is connected to this pin to set the oscil-
lator frequency. Internal current sources alternately charge
and discharge the external capacitor. The oscillator wave-
form is a symmetrical triangular type with a typical voltage
swing between 1.0 V and 1.5 V.
0.7
Pin 12: ENABLE
A logic high on this pin allows normal operation. A logic low
places the chip in the standby mode. In standby mode nor-
mal operation is disabled, supply current is reduced, the
oscillator stops and the output is held high for MODE
SELECT = low, and low for MODE SELECT = high.
Pin 13: UVLO SET
This pin will place the chip in the standby mode if the
UVLO SET voltage drops below 1.2 V. Once the UVLO SET
voltage exceeds 1.2 V, the chip operates normally. There is
a built-in hysteresis of 200 mV.
Pin 14: P GND
The negative return for the V S supply.
Pin 15: OUTPUT
This CMOS push-pull output pin drives the external MOS-
f OSC
R OSC
C OSC
FET and is capable of sinking 150 mA or sourcing 130 mA
with V S equal to 2.7 V.
Pin 11: OTS
This pin indicates an over-temperature condition on the
device when the output is low. The output is latched low and
is reset with the ENABLE pin going low then high, or by turn-
ing power off and on.
Document Number: 70021
S-40710-Rev. K, 19-Apr-04
Pin 16: V S
The positive terminal of the power supply which powers the
CMOS output driver. A bypass capacitor is required.
www.vishay.com
9
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相关代理商/技术参数 |
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|---|---|
| SI9145DB | 功能描述:电源管理IC开发工具 SI9145 Demo Board 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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| SI9150CY | 功能描述:DC/DC 开关控制器 Sync Buck Controller RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| SI9150CY-E3 | 功能描述:DC/DC 开关控制器 Sync Buck Converter Controller RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| SI9150CY-T1 | 功能描述:DC/DC 开关控制器 Sync Buck Converter Controller RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
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