R1141Q321D-TR-FB
| Model | R1141Q321D-TR-FB |
| Description | Fixed Positive LDO Regulator, 3.2V, 0.28V Dropout, CMOS, PDSO4, MINI, SC-82AB, 4 PIN |
| PDF file | Total 15 pages (File size: 142K) |
| Chip Manufacturer | RICOH |
SC-82 120mA LDO REGULATOR
R1141Q SERIES
OUTLINE
NO. EA-082-0411
The R1141Q Series consist of CMOS-based voltage regulator ICs with high output voltage accuracy, low
supply current, low ON-resistance, and high ripple rejection. 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.
Output Current Limit circuit is embedded in the R1141Q Series to prevent the break down of the IC caused by
excess current.
Chip enable circuit realizes standby mode and makes consumption current extremely small.
These ICs perform with low dropout voltage and a chip enable function. The line transient response and load
transient response of the R1141Q Series are excellent, making these ICs very suitable for the power supply for
hand-held communication equipment.
Their output voltage is internally fixed with high accuracy. Since the package for these ICs is SC-82AB (Super
Mini-mold) package, high density mounting of the ICs on boards is possible.
FEATURES
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Ultra-Low Supply Current............................................. Typ. 90µA
Standby Mode .............................................................. Typ. 0.1µA
Low Dropout Voltage.................................................... Typ. 0.15V (I
OUT
=100mA,
Output Voltage=3.0V Type)
High Ripple Rejection .................................................. Typ. 75dB (V
OUT
<
2.4V)
=
..................................................................................... Typ. 70dB (V
OUT
>
2.5V) (f=1kHz)
=
Low Temperature-Drift Coefficient of Output Voltage... Typ.
±100ppm/°C
Excellent Line Regulation ............................................ Typ. 0.02%/V
High Output Voltage Accuracy .....................................±1.5% or
±30mV
(V
OUT
<
2.0V)
=
Excellent Dynamic Response
Small Package ............................................................. SC-82AB (Super Mini-mold)
Output Voltage .............................................................Stepwise setting with a step of 0.1V in the range of
1.5V to 4.0V is possible
Built-in Chip Enable Circuit (B/D : active high)
Built-in Fold-back Protection Circuit............................ Typ. 40mA (Short Current)
Ceramic capacitor can be used for Output pin ........... Recommended value is 2.2µF or more.
APPLICATIONS
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Power source for cellular phones such as GSM, CDMA and various kinds of PCS.
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Power source for electrical appliances such as cameras, VCRs and camcorders,
and hand-held communication equipment.
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Power source for battery-powered equipment.
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Very stable Voltage Reference
1
