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參數資料
| 型號： | R1161N251B |
| 廠商： | Ricoh Co., Ltd. |
| 英文描述： | 3-MODE 300mA LDO REGULATOR |
| 中文描述： | 3模式300mA的LDO穩壓器 |
| 文件頁數： | 1/44頁 |
| 文件大小： | 431K |
| 代理商： | R1161N251B |
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R1161x SERIES
3-MODE 300mA LDO REGULATOR
NO.EA-106-0511
1
OUTLINE
The R1161x Series are CMOS-based voltage regulator ICs with high output voltage accuracy, low supply
current, and low ON-resistance. Each of these voltage regulator ICs consists of a voltage reference unit, an error
amplifier, resistors for setting output voltage, a current limit circuit, and a chip enable circuit.
These ICs perform with low dropout voltage and a chip enable function. To prevent the destruction by over
current, current limit circuit is included. The R1161x Series have 3-mode. One is standby mode with CE or
standby control pin. Standby mode realizes ultra small consumption current off mode. Other two modes are
realized with ECO pin
. Fast Transient Mode (FT mode) and Low Power Mode (LP mode) are alternative with
ECO pin
. Consumption current is reduced at Low Power Mode compared with Fast Transient Mode. Output
voltage is maintained between FT mode and LP mode.
The output voltage of these ICs is internally fixed with high accuracy. Since the packages for these ICs are
SOT-23-5, SON-6, and HSON-6, high density mounting of the ICs on boards is possible.
FEATURES
x
Ultra-Low Supply Current .................................Typ. 3.5
P
A (Low Power Mode, V
OUT
<1.6V),
x
Standby Mode...................................................Typ. 0.1
P
A
x
Low Dropout Voltage.........................................Typ. 0.48V(I
OUT
300mA Output Voltage
1.0V Type)
Typ. 0.31V(I
OUT
300mA Output Voltage
1.5V Type)
Typ. 0.23V(I
OUT
300mA Output Voltage
3.0V Type)
x
High Ripple Rejection .......................................Typ. 65dB(f
1kHz, FT Mode)
x
Low Temperature-Drift Coefficient of Output Voltage Typ. ±100ppm/
q
C
x
Excellent Line Regulation .................................Typ. 0.01%/V (at Fast Transient Mode)
x
High Output Voltage Accuracy..........................
r
2.0%(
r
3.0% at LP Mode)
x
Small Package ................................................SOT-23-5 (Super Mini-mold), SON-6, HSON-6
x
Output Voltage ..................................................Stepwise setting with a step of 0.1V in the range of 0.8V to
3.3V is possible
x
Input Voltage.....................................................Min. 1.40V(V
OUT
!
1.0V)
Min. 1.45V(V
OUT
<1.0V)
x
Built-in fold-back protection circuit....................Typ. 50mA (Current at short mode)
x
External Capacitors...........................................C
IN
C
OUT
Tantalum 1.0
P
F (V
OUT
<1
.
0V)
C
IN
C
OUT
Ceramic 1.0
P
F (V
OUT
!
1.
0V)
Typ. 80
P
A (Fast Transient Mode, V
OUT
<1.8V)
Typ. 60
P
A (Fast Transient Mode, V
OUT
!
1.8V)
APPLICATIONS
x
Precision Voltage References.
x
Power source for electrical appliances such as cameras, VCRs and hand-held communication equipment.
x
Power source for battery-powered equipment.
相關PDF資料 |
PDF描述 |
|---|---|
| R1161N251D | 3-MODE 300mA LDO REGULATOR |
| R1161N261A | 3-MODE 300mA LDO REGULATOR |
| R1163K161D | 3-MODE 150mA LDO REGULATOR with the Reverse Current Protection |
| R1163D271B | 3-MODE 150mA LDO REGULATOR with the Reverse Current Protection |
| R1163D271D | 3-MODE 150mA LDO REGULATOR with the Reverse Current Protection |
相關代理商/技術參數 |
參數描述 |
|---|---|
| R1161N251D | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:3-MODE 300mA LDO REGULATOR |
| R1161N261A | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:3-MODE 300mA LDO REGULATOR |
| R1161N261B | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:3-MODE 300mA LDO REGULATOR |
| R1161N261D | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:3-MODE 300mA LDO REGULATOR |
| R1161N271A | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:3-MODE 300mA LDO REGULATOR |
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