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參數(shù)資料
| 型號(hào)： | R5210N001C-TR |
| 英文描述： | SMPS Controller |
| 中文描述： | 開關(guān)電源控制器 |
| 文件頁(yè)數(shù)： | 1/12頁(yè) |
| 文件大?。?/td> | 209K |
| 代理商： | R5210N001C-TR |
Step-down DC/DC Converter with VR and Reset
R5210X Series
2002.10.15
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Rev. 1.12 - 1 -
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OUTLINE
The R5210X is CMOS-based PWM step-down DC/DC converter combined with a voltage
regulator (VR) and a voltage detector (VD), with low supply current.
Each of these ICs consists of an oscillator, a PWM control circuit, a reference voltage unit, an
error amplifier, a soft-start circuit, a current limit circuit, a phase compensation circuit, a resistor
net for voltage detect circuit, an output driver transistor, and so on. A low ripple, high efficiency
step-down DC/DC converter can be easily composed of this IC with some external components,
or an inductor, a diode, and capacitors.
The oscillator frequency is 800kHz, therefore small inductor and capacitor can be used with
this IC. Further, this IC equips the under voltage lockout function (UVLO). If the input voltage
becomes 2.35V (Typ.) or less, the output of DC/DC converter is turned off. However, embedded
voltage regulator and the detector continue to operate.
The voltage regulator consists of a reference voltage unit, a resistor net for voltage detect
circuit, an error amplifier, an output driver transistor, and so on.
The built-in voltage detector supervises the input voltage and the output is N-channel open
drain type. Power-on reset delay time is also included and internally set typically at 10ms.
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FEATURES
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Wide Range of Input Voltage
2.7V
～
5.5V
Built-in Soft-start Function (Typ. 2ms) and built-in power-on reset delay (Typ. 10ms)
Maximum Output Current
500mA(DC/DC), 200mA(VR)
High Accuracy Output Voltage
±2.0%(DC/DC and Voltage Regulator Output)
Accuracy of voltage detector
±2.5%
Output Voltage(VR)
Stepwise Setting with a step of 0.1V in the range of 2.5V to 3.6V
Output Voltage(DC/DC)
Stepwise Setting with a step of 0.1V in the range of 1.5V to 3.3V
Output Voltage(VD)
Stepwise Setting with a step of 0.1V in the range of 3.0V to 4.5V
Packages
SOT23-6W(thickness: Max. 1.3mm) or HSON6(thickness: Max. 0.9mm)
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APPLICATIONS
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Power source for hand-held communication equipment, CD or DVD drives.
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Power source for battery-powered equipment.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| R5210X | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:Step-down DC/DC Converter with VR and Reset |
| R5210XXXXC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Power Management ICs |
| R5212D | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:Step-down DC/DC Converter with VR and Reset |
| R5212D011A | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:Step-down DC/DC Converter with VR and Reset |
| R5212D014C | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:Step-down DC/DC Converter with VR and Reset |
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