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參數(shù)資料
| 型號(hào)： | BL8501 |
| 廠商： | 上海貝嶺股份有限公司 |
| 英文描述： | Step down DC/DC controller |
| 中文描述： | 降壓DC / DC控制器 |
| 文件頁數(shù)： | 1/10頁 |
| 文件大小： | 421K |
| 代理商： | BL8501 |
http://www.belling.com.cn
- 1-
8/8/2006
Total
10
Pages
BL8501
Step down DC/DC controller
OUTLINE
The BL8501 is a CMOS-based PWM step-down DC-DC Converter controller. The device can
offer the following advantages: lower supply current and wider operating input-voltage range.
The BL8501 consists of an oscillator, a PWM control circuit, a reference voltage unit, an error
amplifier, a soft-start circuit, a protection circuit, a PWM/VFM alternative circuit, a chip enable
circuit, and detecting input voltage circuit. A low ripple, high efficiency step-down DC-DC
converter can be easily composed of this IC with only several external components, or a
power-transistor, an inductor, a diode and capacitors. Output Voltage can be adjusted with
external resistors.
FEATURES
Range of input Voltage: 3.5V~12V
Built-in Soft-start Function and Protection Function (Reset type protection)
Oscillation Frequency: 500KHz
High efficiency: 90%
High Accuracy Output Voltage:
2.0%
Low Temperature-Drift Coefficient of Output Voltage: Typ:
Operating Temperature Range: -20 ~85
100ppm/°C
APPLICATIONS
Power source for hand-held communication equipment, cameras, video instruments
such as VCRs, camcorders.
Power source for battery-powered equipment.
Power source for household electrical appliances.
PIN CONFIGURATION
SOT-23-5L
PIN DESCRIPTION
Pin No.
1
2
3
4
5
DETAILED DESCRIPTION
Symbol
CE
GND
V
FB
EXT
V
IN
Description
Chip Enable Pin (Active with “H”)
Ground Pin
Pin for Feedback Voltage
External Transistor Drive Pin (CMOS Output)
Power Supply Pin
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| BL8503-35C1T | 250mA CMOS Low Dropout Voltage Low consumption Regulator |
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| BL8503-12C1AB | 250mA CMOS Low Dropout Voltage Low consumption Regulator |
| BL8503-12C1RM | 250mA CMOS Low Dropout Voltage Low consumption Regulator |
| BL8503-12C1SA | 250mA CMOS Low Dropout Voltage Low consumption Regulator |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| BL8503 | 制造商:BELLING 制造商全稱:SHANGHAI BELLING CO., LTD. 功能描述:250mA CMOS Low Dropout Voltage Low consumption Regulator |
| BL8503-12C1AB | 制造商:BELLING 制造商全稱:SHANGHAI BELLING CO., LTD. 功能描述:250mA CMOS Low Dropout Voltage Low consumption Regulator |
| BL8503-12C1RM | 制造商:BELLING 制造商全稱:SHANGHAI BELLING CO., LTD. 功能描述:250mA CMOS Low Dropout Voltage Low consumption Regulator |
| BL8503-12C1SA | 制造商:BELLING 制造商全稱:SHANGHAI BELLING CO., LTD. 功能描述:250mA CMOS Low Dropout Voltage Low consumption Regulator |
| BL8503-12C1SM | 制造商:BELLING 制造商全稱:SHANGHAI BELLING CO., LTD. 功能描述:250mA CMOS Low Dropout Voltage Low consumption Regulator |
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