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R1121 Series

8V Input 150mA Voltage Regulator

  • Consumer
  • RoHS

The R1121 Series are CMOS-based LDO regulators featuring 150mA output. (Under 1.5V ≤ VSET ≤ 1.7V conditions, 100mA)

R1121 has a high maximum input voltage rating of 8V, which makes the product ideally suitable for use in power source for various equipment, including hand-held communication equipment. The polarity of the CE pin can be selected. Two different pin layout as R1111 and R1121 are available.

Specs & Datasheets

Input Voltage Range 2.0 V to 8.0 V (9.0 V)
Operating Temperature Range -40°C to 85°C (125°C)
Supply Current Typ. 35 µA
Standby Current Typ. 0.1 µA
Output Voltage Range 1.5 V to 5.0 V (0.1 V step)
Output Voltage Accuracy ±2.0% (Ta = 25°C)
Output Voltage Temperature Coefficient Typ. ±100 ppm/°C
Dropout Voltage Typ. 0.2 V (IOUT = 100 mA)
Line Regulation Typ. 0.05%/V
Output Current 150 mA
Ripple Rejection Typ. 70 dB (f = 1 kHz)
Package SOT-23-5

Download Datasheet

Protections / Functions

Functional Description

TSD Reverse Current Limit ISC Inrush Constant Slope ECO mode Auto Discharge External Driver

Technical Documents

R1121N301B Dropout Voltage vs. Output Current

R1121N301B Dropout Voltage vs. Output Current

Quality & Packages

Product Name Compatibility Package Marking Reliability
  • gradeConsumerC
SOT-23-5 R1121N R1121N-FE

Refer to the datasheets for the details on the product.
The package file includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.
Please contact us or our distributors for unpublished reliability information.

Sample / Buy

Functional Description

TSD Thermal Shutdown Function
Reverse Current Protection Reverse Current Protection
Current Limit Overcurrent Protection
ISC Short Current Protection
Inrush Current Limit Inrush Current Protection
Constant Slope Constant Slope Function
ECO mode ECO Function
Auto Discharge Auto Discharge Function
External Driver External Output Driver Transistor

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