參數(shù)資料
型號(hào)： R1121N491B-TL
廠商： RICOH COMPANY LTD
元件分類(lèi)： 基準(zhǔn)電壓源/電流源
英文描述： THREE-TERMINAL POSITIVE FIXED VOLTAGE REGULATORS
中文描述： 4.9 V FIXED POSITIVE LDO REGULATOR, 0.26 V DROPOUT, PDSO5
封裝： MINI, SOT-23, 5 PIN
文件頁(yè)數(shù)： 1/16頁(yè)
文件大?。?/td> 135K
代理商： R1121N491B-TL
’99.7.13
LOW NOISE 150mA LDO REGULATOR
R1121N SERIES
Rev.1.11
- 1 -
I
OUTLINE
The R1121N Series are voltage regulator ICs with high output voltage accuracy, extremely low supply current, low ON-
resistance and high ripple rejection by CMOS process. Each of these voltage regulator ICs consists of a voltage reference
unit, an error amplifier, resistors, a current limit circuit, and a chip enable circuit. These ICs perform with low dropout
voltage and a chip enable function.
The line transient response and load transient response of the R1121N Series are excellent, thus these ICs are very suitable
for the power supply for hand-held communication equipment.
The output voltage of these ICs is fixed with high accuracy.
Since the package for these ICs are SOT-23-5 (Mini-mold) package, high density mounting of the ICs on boards is possible.
I
FEATURES
Ultra-Low Supply Current.................................................TYP. 35
μ
A
Standby Mode ...................................................................TYP. 0.1
μ
A
Low Dropout Voltage........................................................TYP. 0.2V (I
OUT
= 100mA)
High Ripple Rejection.......................................................TYP. 70db (f = 1kHz)
Low Temperature-Drift Coefficient of Output Voltage .....TYP.
±
100ppm/
°
C
Excellent Line Regulation.................................................TYP. 0.05%/V
High Accuracy Output Voltage..........................................
±
2.0%
Small Package ..................................................................SOT-23-5 (Mini-mold)
Output Voltage ..................................................................Stepwise setting with a step of 0.1V in the range of 1.5V to 5.0V
is possible.
Built-in chip enable circuit (2 Types; A: active “L”, B: active “H”)
Pinout ................................................................................Similar to the TK112, TK111
I
APPLICATIONS
Power source for cellular phones such as GSM, CDMA and various kind of PCSs.
Power source for domestic appliances such as cameras, VCRs and camcorders.
Power source for battery-powered equipment.
I
BLOCK DIAGRAM
R1121NXX1A
R1121NXX1B
Vref
Current Limit
V
DD
3
1
2
4
V
OUT
GND
CE
Vref
Current Limit
V
DD
3
1
2
4
V
OUT
GND
CE
相關(guān)PDF資料
PDF描述
R1121N491B-TR THREE-TERMINAL POSITIVE FIXED VOLTAGE REGULATORS
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
R1121N491B-TR 制造商:RICOH 制造商全稱(chēng):RICOH electronics devices division 功能描述:Positive Fixed Voltage Regulator
R1121N501A 制造商:RICOH 制造商全稱(chēng):RICOH electronics devices division 功能描述:LOW NOISE 150mA LDO REGULATOR
R1121N501A-TL 制造商:RICOH 制造商全稱(chēng):RICOH electronics devices division 功能描述:LOW NOISE 150mA LDO REGULATOR
R1121N501A-TR 制造商:RICOH 制造商全稱(chēng):RICOH electronics devices division 功能描述:LOW NOISE 150mA LDO REGULATOR
R1121N501B 制造商:RICOH 制造商全稱(chēng):RICOH electronics devices division 功能描述:LOW NOISE 150mA LDO REGULATOR
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