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參數資料
| 型號： | R1130H491B-T1 |
| 廠商： | RICOH COMPANY LTD |
| 元件分類： | 固定正電壓單路輸出LDO穩壓器 |
| 英文描述： | 4.9 V FIXED POSITIVE LDO REGULATOR, 0.28 V DROPOUT, PDSO6 |
| 封裝： | SOT-89, 5 PIN |
| 文件頁數： | 1/24頁 |
| 文件大小： | 739K |
| 代理商： | R1130H491B-T1 |
300mA LDO REGULATOR
R1130xxxxA/B/C SERIES
1
OUTLINE
The R1130xxxxx Series are CMOS-based voltage regulator (VR) ICs. VR function has features of high ripple rejec-
tion, low dropout voltage, high output voltage accuracy, and ultra-low supply current. Each of these ICs consists of a
voltage reference unit, an error amplifier, resistors for setting output voltage, and a current limit circuit. Each of the
R1130xxxxA/B type includes also a chip enable circuit.
The output voltage of the R1130xxxxC type is adjustable with external resistors.
The output voltage of R1130xxxxA/B is fixed in the IC. Low supply current by the merit of CMOS process and
built-in transistors with low ON-resistance make low dropout voltage. These regulators in the R1130xxxxx Series are
remarkable improvement on the current regulators in terms of ripple rejection, input transient response, and load
transient response. Maximum Output Current is large for its compact size.
Thus, the R1130xxxxx series are suitable for power supply for CD-drives, DVD-drives, and so forth.
Since the packages for these ICs are the SOT-89-5 package or HSON-6P, high density mounting of the ICs on
boards is possible.
FEATURES
Ultra-Low Supply Current ...................................................................................Typ. 50A
Low Standby Current.................................................................................................Typ. 0.1A (VR) for A type
High Ripple Rejection................................................................................................Typ. 60dB (f=1kHz) (VR)
Output Current.................................................................................................................Min. 300mA (VIN=VOUT+1V)
Output Voltage (VR)....................................................................................................Stepwise setting with a step of 0.1V in the range of 1.5V to
5.0V (A/B Version) (Reference 1.8V (C Version))
High Output Voltage Accuracy........................................................................±2.0% (VR) for A/B type,
±2.0% (Reference Voltage for adjustable VR) for C type
Low Dropout Voltage..................................................................................................Typ. 0.2V (IOUT=100mA) (VR)
Small Package.....................................................................................................................SOT-89-5, HSON-6P
Built-in Current Limit Circuit
Low Temperature-drift Coefficient of Output Voltage..........Typ. ±100ppm/°C
Absolute Maximum Voltage................................................................................9V
Internal Phase Compensation (small output capacitance such as 0.1F Ceramic can be used with.)
APPLICATIONS
Power source for CD-drives and DVD-drives, HDD.
Local Power source for Notebook PC.
NO. EA-078-0305
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