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R1131 Series
Low Voltage 300mA Voltage Regulator (LDO Regulator)

Product Specifications

The R1131 Series are CMOS-based LDO regulators featuring 300mA output. The input voltage (VIN) is as low as Min. 1.4V and the output voltage can be set from 0.8V. The CE pin can switch the regulator into standby mode.

FEATURES

Input Voltage Range (Absolute maximum rating) 1.4 V to 6.0 V (6.5 V)
Supply Current Typ. 80 µA (VOUT<1.8V)
Typ. 60 µA (VOUT≥1.8V)
Standby Mode Typ. 0.1 µA
Dropout Voltage Typ. 0.23 V (IOUT=300mA, VOUT=3.0V)
Ripple Rejection Typ. 65 dB (f=1kHz)
Temperature-Drift Coefficient of Output Voltage Typ. ±100 ppm/°C
Line Regulation Typ. 0.01%/V
Output Voltage Accuracy ±2.0%
Output Voltage Range 0.8 V to 3.3 V (0.1 V steps)
Packages SOT-23-5, SON-6
Built-in fold-back protection circuit Typ. 50 mA (Current at short mode)
External Capacitors CIN=COUT=Tantalum 1.0 µF (VOUT<1.0V)
CIN=COUT=Ceramic 1.0 µF (VOUT≥1.0V)

APPLICATION INFORMATION

C1, C2 = 1.0 µF

TYPICAL CHARACTERISTICS

R1131x33xx Dropout Voltage vs. Output Current

PIN DESCRIPTION

SON-61.6 mm × 3.0 mm

SON-6

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

*) The tab suspension leads on back side are substrate level (GND).

SOT-23-52.9 mm × 2.8 mm

SOT-23-5

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

R1131 Series for Consumer

APPLICATIONS

  • Precision Voltage References
  • Power source for electrical appliances such as cameras, VCRs and hand-held communication equipment
  • Power source for battery-powered equipment

SELECTION GUIDE

The output voltage, CE pin polarity, auto discharge function, package, etc. for the ICs can be selected at the user’s request.

Product Name   Package Quantity per Reel
R1131Dxx1#-TR-FE Consumter SON-6 3,000
R1131Nxx1#-TR-FE Consumter SOT-23-5 3,000
  • xx … The output voltage can be designated in the range from 0.8V(08) to 3.3V(33) in 0.1V steps.
  • # … CE pin polarity and auto discharge function at off state are options as follows.
    A: "L" active, without auto discharge function at off state
    B: "H" active, without auto discharge function at off state
    D: "H" active, with auto discharge function at off state

DOCUMENT/CONTACT

Purchase

Technical Support

Package *1 Marking Reliability *2
SON-6 R1131Dxx1 R1131Dxx1 (-FE)
SOT-23-5 R1131N R1131N (-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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