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參數(shù)資料
| 型號： | R1210N221D-TL |
| 廠商： | RICOH COMPANY LTD |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | PWM Step-up DC/DC Converter |
| 中文描述： | SWITCHING REGULATOR, 120 kHz SWITCHING FREQ-MAX, PDSO5 |
| 封裝： | MINI, PLASTIC, SOT-23, 5 PIN |
| 文件頁數(shù)： | 2/18頁 |
| 文件大?。?/td> | 179K |
| 代理商： | R1210N221D-TL |
PWM Step-up DC/DC Converter
R1210N××1× Series
1
OUTLINE
The R1210N
××
1
×
Series are PWM step-up DC/DC Converter, with high accuracy, low supply current by CMOS
process.
Each of the R1210N
××
1
×
Series consists of an oscillator, a PWM circuit, a reference voltage unit, an error amplifier,
phase compensation circuit, resistors for voltage detection, a chip enable circuit. Further, includes a controller against
drastic load transient, a control transistor with low ON-Resistance, ‘L
X
switch’, and a protection circuit for L
X
switch
and an output voltage detector. R1210N
××
1A Series contain further a circuit for changeover oscillator frequency each.
A low ripple, high efficiency step-up DC/DC converter can be composed of this IC with only three external compo-
nents, or an inductor, a diode and a capacitor.
The R1210N Series can detect drastic change of output voltage with a circuit controller. The load transient re-
sponse is improved compared with current model, furthermore the R1210N
××
1A Series have another function, that is,
when the load current is small, oscillator frequency is decreased by a circuit for switching oscillator frequency from
TYP 100kHz to 35kHz, therefore, supply current is reduced.
The built-in chip enable circuit can make the standby mode with ultra low quiescent current.
Since the package for these ICs is small SOT-23-5, high density mounting of the ICs on board is possible.
FEATURES
External Components................................................................. Only an inductor, a diode, and a capacitor
Standby Current......................................................................... TYP 0μA
Low Temperature-Drift Coefficient of Output Voltage.............. TYP ±100ppm/°C
Output Voltage............................................................................. Stepwise Setting with a step of 0.1V in the range of
2.2V to 6.0V (
××
1C/D)
2.2V to 3.5V (
××
1A)
Two choices of Basic Oscillator Frequency................................ 100kHz (
××
1A/C), 180kHz (
××
1D)
Small Package.............................................................................. SOT-23-5 (Mini-mold)
High Efficiency............................................................................ TYP 88%
(V
IN
=Set Output Voltage
×
0.6 [V], I
OUT
=10mA)
Low Ripple, Low Noise
Built-in a driver transistor with low on-resistance
Start-up Voltage........................................................................... MAX. 0.9V
Basic Frequency change-over circuit (only for
××
1A type)....... from TYP. 100kHz to 35kHz
相關(guān)PDF資料 |
PDF描述 |
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| R1210N221D-TR | PWM Step-up DC/DC Converter |
| R1210N501C-TL | CAP Tantalum-Wet Miniature 60V 820.0 uF +/-10% Silver can Axial High Reliability , TPC - Hilton |
| R1210N501C-TR | PWM Step-up DC/DC Converter |
| R1210N501D | CAP Tantalum-Wet Miniature 6V 820.0 uF +/-20% Silver can Axial High Reliability , TPC - Hilton |
| R1210N601A | CAP Tantalum-Wet Miniature 25V 820.0 uF +/-20% Silver can Axial High Reliability , TPC - Hilton |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| R1210N221D-TR | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:PWM Step-up DC/DC Converter |
| R1210N222C | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:POWER MANAGEMENT ICs MARK INFORMATIONS R1210N SERIES MARK SPECIFICATION |
| R1210N222D | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:POWER MANAGEMENT ICs MARK INFORMATIONS R1210N SERIES MARK SPECIFICATION |
| R1210N231A | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:POWER MANAGEMENT ICs MARK INFORMATIONS R1210N SERIES MARK SPECIFICATION |
| R1210N231A-TL | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:SMPS Controller |
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