Skip to main content Skip to first level navigation
Skip to main content First level navigation Menu
Contact Us About Us
Facebook (Open link in new window) YouTube (Open link in new window) LinkedIn (Open link in new window) E-mail Newsletter
Main content
Main content

R1171 Series

2A/1.5A Voltage Regulator

  • Consumer
  • Automotive
  • PLP
  • RoHS

The R1171 Series are CMOS-based LDO regulators featuring 2A/1.5A output. The TO-252-5-P1 and the HSOP-6J that support high wattage can provide the output current up to 2A and 1.5A, respectively. The CMOS process provides both high output current and low supply current. The dropout voltage is significantly lower than bipolar regulators. The CE pin can switch the regulator into standby mode. In addition to a fold-back protection circuit built into conventional LDO regulators, R1171 has a thermal shutdown circuit.

Specs & Datasheets

  Consumer Automotive
Input Voltage Range 2.1 V to 6.0 V (7.0 V)
Operating Temperature Range -40°C to 85°C (125°C)
Supply Current Typ. 130 µA
Standby Current Typ. 0.1 µA
Output Voltage Range 1.5 V to 5.0 V (0.1 V step, R1171Sxx1A/B)
1.8 V to 5.0 V (0.1 V step, R1171Jxx1C/D)
1.5 V to 5.0 V (0.1 V step), 1.85 V, 2.85 V
Output Voltage Accuracy ±2.0% (Ta = 25°C)
Output Voltage Temperature Coefficient Typ. ±100 ppm/°C
Dropout Voltage Typ. 0.09 V (VOUT = 3.0 V, IOUT = 300 mA)
Line Regulation Typ. 0.05%/V
Output Current Min. 2.0 A (VIN = VOUT + 1.0 V, R1171Sxx1A/B)
Min. 2.0 A (VIN = VOUT + 1.0 V, R1171Jxx1C/D)
Min 1.5 A (VIN = VOUT + 1.0 V)
Ripple Rejection Typ. 50 dB
Package HSOP-6J, TO-252-5-P1 HSOP-6J

Download Datasheet

Protections / Functions

Functional Description

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

Technical Documents

R1171J301x Dropout Voltage vs. Output Current

R1171J301x Dropout Voltage vs. Output Current

Quality & Packages

Product Name Compatibility Package Marking Reliability
  • gradeConsumerC
  • plpP
HSOP-6J R1171S R1171S-FE
  • gradeConsumerC
TO-252-5-P1 R1171J R1171J-F
  • gradeAutomotiveA
  • plpP
HSOP-6J R1171Sxx2 R1171Sxx2-AE

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Please contact us or our distributors for unpublished reliability information.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

Search for similar products under conditions below.

Category:LDO Linear Regulators

min (V)
max (V)
min (V)
max (V)