Skip to main content Skip to first level navigation

RICOH imagine. change.

RICOH ELECTRONIC DEVICES CO., LTD.

Skip to main content First level navigation Menu
Main content

R1171 Series
2A/1.5A Voltage Regulator (LDO Regulator)

Product Specifications

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.

FEATURES

  Consumer Automotive
Input Voltage Range (Maximum Rating) 2.1 V to 6.0 V (7.0 V)
Operating Temperature Range -40 to 85°C
Supply Current Typ. 130 µA
Standby Current Typ. 0.1 µA
Output Current Min. 1.5 A (VIN=VOUT+1.0V, R1171Sxx1A/B)
Min. 2.0 A (VIN=VOUT+1.0V, R1171Jxx1C/D)
Min. 1.5 A (VIN=VOUT+1.0V)
Output Voltage 1.5 V to 5.0 V (0.1V steps) (R1171Sxx1A/B)
1.8 V to 5.0 V (0.1V steps) (R1171Jxx1C/D)
1.5 V to 5.0 V (0.1V steps) , 1.85 V, and 2.85 V
Ripple Rejection Typ. 50 dB
Output Voltage Accuracy ±2.0%
Dropout Voltage Typ. 0.09 V (VOUT=3.0V, IOUT=300mA)
Output Voltage Temperature Coefficient Typ. ±100 ppm/°C
Line Regulation Typ. 0.05%/V
Packages HSOP-6J, TO-252-5-P1 HSOP-6J
Ceramic capacitor for phase compensation CIN=COUT=Ceramic 10 µF (VOUT<1.8V)
CIN=COUT=Ceramic 4.7 µF (VOUT≥ 1.8V)
Protection Function Built-in Current Limit Circuit
Built-in Thermal Shutdown Circuit Stops at 150°C

APPLICATION INFORMATION

C1, C2 = 10 µF (1.5 V ≤ VSET < 1.8 V)
C1, C2 = 4.7 µF (1.8 V ≤ VSET ≤ 5.0 V)

TYPICAL CHARACTERISTICS

R1171J301x Dropout Voltage vs. Output Current

PIN DESCRIPTION

HSOP-6J5.02 mm × 6.0 mm

HSOP-6J

1 VOUT
2 GND**
3 CE or CE
4 NC (Consumer)
GND** (Automotive)
5 GND**
6 VDD

**) The GND pin must be wired together when it is mounted on board.

TO-252-5-P16.54 mm × 9.68 mm

TO-252-5-P1

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

*) The tab is substrate level (GND).
**) The GND pin must be wired together when it is mounted on board.


R1171 Series for Consumer

APPLICATIONS

  • Local Power source for Notebook PC
  • Local Power source for portable appliances, cameras, and videos
  • Local Power source for equipment of battery-use
  • Local Power source for home appliances

PRODUCT LONGEVITY PROGRAM

R1171S operate PRODUCT LONGEVITY PROGRAM (ten-year supply is maintained as of January, 2016).
This program has been introduced to help customers select the most appropriate part for applications that require long life cycles.


SELECTION GUIDE

The output voltage, chip enable polarity, package for the ICs can be selected at the user’s request.

Product Name   Package Quantity per Reel
R1171Sxx1#-E2-FE ConsumterPLP HSOP-6J 1,000
R1171Jyy1$-T1-F Consumter TO-252-5-P1 3,000
  • xx … The output voltage can be designated in the range from 1.5V(15) to 5.0V(50) in 0.1V steps.
  • yy … The output voltage can be designated in the range from 1.8V(18) to 5.0V(50) in 0.1V steps.
  • # … CE pin polarity are options as follows.
    A: "L" active
    B: "H" active
  • $ … CE pin polarity are options as follows.
    C: "L" active
    D: "H" active

DOCUMENT/CONTACT

Purchase

Technical Support

Package *1 Marking Reliability *2
HSOP-6J R1171S R1171S (-FE)
TO-252-5-P1 R1171J R1171J (-F)

*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.


R1171 Series for Automotive

Ricoh is committed to providing a semiconductor device with the highest level of quality and reliability by restricting the device manufacturing only within Ricoh and the cooperative companies successfully passed our stringent inspections for automotive products. Ricoh established a traceability system and manages manufacturing information and logistics information from the warehouse.


Quality Ranks for Applications

Ricoh offers three different quality ranks for automotive products according to their application purposes.
R1171 Series offer products in Rank 3.

Rank 3: Automotive Accessories

  • Power source for car accessories such as car audio equipment, car navigation system, and ETC system

PRODUCT LONGEVITY PROGRAM

R1171S operate PRODUCT LONGEVITY PROGRAM (ten-year supply is maintained as of January, 2016).
This program has been introduced to help customers select the most appropriate part for applications that require long life cycles.


SELECTION GUIDE

The output voltage, chip enable polarity, package for the ICs can be selected at the user’s request.

Product Name   Package Quantity per Reel
R1171Sxx2#(y)-E2-AE AutomotiveAutomotive AccessoriesPLP HSOP-6J 1,000
  • xx … The Set Output Voltage (VSET) can be designated in the range from 1.5V(15) to 5.0V(50) in 0.1V steps.
  • y … If the output voltage includes the 3rd digit, indicate the digit of 0.01V. (1.85V, 2.85V)
    Ex.
    If the output voltage is 1.85V, R1171S182#5-E2-AE.
    If the output voltage is 2.85V, R1171S282#5-E2-AE.
  • # … CE pin polarity is options as follows.
    A: "L" active
    B: "H" active

DOCUMENT/CONTACT

Purchase

Technical Support

Package*1 Reliability*2
HSOP-6J R1171S (-AE)

*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.

Inquiry about products

Technical Support

Inquiries (SSL Form)

Inquiry about business

Purchase, Request for Samples and Documents

Distributors

Sample Online

Online Distributors