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R1122 Series
Low Noise 150mA Voltage Regulator (LDO Regulator)

Product Specifications

The R1122 Series are CMOS-based LDO regulators featuring 150mA output. High ripple rejection and excellent load transient response of the series make the product ideally suited for use in power source for hand-held communication equipment. The polarity of the CE pin can be selected.

FEATURES

Input Voltage Range (Absolute maximum rating) 2.0 V ~ 6.0 V (7.0 V)
Supply Current TYP. 100 µA
Standby Mode Current TYP. 0.1 µA
Dropout Voltage Typ. 0.19 V (IOUT=100mA 3.0V Output type)
Ripple Rejection TYP. 80 dB (f = 1 kHz)
Output Voltage Accuracy ±2.0%
Temperature-Drift Coefficient of Output Voltage TYP. ±100 ppm/°C
Line Regulation TYP. 0.05%/V
Output Voltage Range 1.5 V ~ 5.0 V (0.1V steps)
Package SOT-23-5
Built-in chip enable circuit 2 types; A: active “Low”, B: active “High”
Built-in fold-back protection circuit Short Current Typ.30 mA
Pin-out Similar to the TK112,TK111
Ceramic Capacitors Recommended to be used with this IC 2.2 µF or more

APPLICATION INFORMATION

CIN: 2.2µF
COUT: 2.2µF (VOUT=2.5~5.0V), 4.7µF (VOUT=1.5~2.5V)

TYPICAL CHARACTERISTICS

R1122N301B Dropout Voltage vs. Output Current

PIN DESCRIPTION

SOT-23-52.9 mm × 2.8 mm

SOT-23-5

1 VOUT
2 GND
3 VDD
4 CE or CE
5 NC

R1122 Series for Consumer

APPLICATIONS

  • Power source for cellular phones such as GSM, CDMA, PCS and so forth
  • Power source for domestic appliances such as cameras, VCRs and camcorders
  • Power source for battery-powered equipment

SELECTION GUIDE

The output voltage, the active type for the ICs can be selected at the user's request.

Product Name   Package Quantity per Reel
R1122Nxx1#-TR-FE Consumter SOT-23-5 3,000
  • xx … The output voltage can be designated in the range from 1.5V(15) to 5.0V(50) in 0.1V steps.
  • # … Designation of Active Type
    A: "L" active
    B: "H" active

DOCUMENT/CONTACT

Purchase

Technical Support

Package *1 Marking Reliability *2
SOT-23-5 R1122N R1122N (-FE)

*1: The package file includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and land pattern (foot pattern).
*2: Reliability file includes a reliability test report and a reflow profile.

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