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
ricoh.com
Main content

RP124 Series
Low Supply Current 100mA LDO Regulator with Battery Monitor

  • RoHS

Sample Online

  • Mouser
  • chip one stop

Purchase

Technical Support

Product Specifications

The RP124 is a low supply current LDO regulator with a battery monitor (BM).
The battery monitor has a function which divides the input voltage (VIN) into 1/3 or 1/4. The battery charge remaining can be monitored by MCU. The buffering output enables directly inputting a signal into the low voltage A/D converter (ADC) with built-in MCU.

  • Achieving Low Supply Current of 0.3 µA, Longer Battery Life and Downsizing
  • Requiring Only Three External Capacitors and Suitable for Space-saving Mounting for the Smaller Packages

FEATURES

LDO Section Input Voltage Range (Maximum Rating) 1.7 V to 5.5 V (6.5 V)
Supply Current Typ. 0.2 µA
Output Voltage Range 1.2 V / 1.5 V / 1.8 V / 2.1 V / 2.4 V / 2.5 V / 2.7 V / 2.8 V / 3.0 V / 3.1 V / 3.3 V / 3.6 V
Output Voltage Accuracy ±0.8%
Output Current 100 mA
Ceramic Capacitor Compatible 1.0 µF or more
BM Section Output Voltage VIN/3 (RP124xxx3x)
VIN/4 (RP124xxx4x)
Output Voltage Accuracy ±20 mV
Supply Current Typ. 0.1 µA
Ceramic Capacitor Compatible 0.1 µF to 0.22 µF
Packages DFN1212-6, SOT-23-5

APPLICATION INFORMATION

RP124xxxxE

TYPICAL CHARACTERISTICS

LDO Supply Current vs. Temperature
RP124x18xx, VIN = 2.8 V

(CIN = Ceramic 1.0 µF, COUT = Ceramic 1.0 µF)

BM Supply Current vs. Temperature
RP124xxx4x, VIN = 3.6 V

(CIN = Ceramic 1.0 µF, CBM = Ceramic 0.1 µF)

PIN DESCRIPTION

DFN1212-6

DFN1212-61.2 mm × 1.2 mm
1 VOUT
2 GND
3 BM
4 CE
5 NC
6 VDD

*) The tab is substrate level (GND). It is recommended that the tab be connected to the ground plane on the board, or otherwise be left floating.

SOT-23-5

SOT-23-52.9 mm × 2.8 mm
1 VDD
2 GND
3 CE
4 BM
5 VOUT

RP124 Series for Consumer

APPLICATIONS

  • Battery powered IoT devices
  • Energy harvesting devices
  • Low power wireless communication modules including: Bluetooth® LE, Zigbee, and LPWA
  • Low power consumption CPUs, memories, and sensors

SELECTION GUIDE

The LDO set output voltage, the divided ratio of BM output voltage, the CE pin function and the auto-discharge function are user-selectable options.

Product Name   Package Quantity per Reel
RP124Lxx#$-TR
Consumer DFN1212-6 5,000
RP124Nxx#$-TR-FE Consumer SOT-23-5 3,000
  • xx … Specify the LDO set output voltage (VSET).
    1.2 V (12) / 1.5 V (15) / 1.8 V (18) / 2.1 V (21)* / 2.4 V (24) / 2.5 V (25) / 2.7 V (27) / 2.8 V (28) / 3.0 V (30) / 3.1 V (31) / 3.3 V (33) / 3.6 V (36)
    * Note: 2.1 V (21) is selectable for only RP124x21xE.
  • # … Specify the divided ratio of BM output voltage.
    3: VIN/3
    4: VIN/4
  • $ … Specify the CE pin and the auto-discharge option.
$ CE pin Auto-discharge
B Controlling LDO with the CE pin (Active-high) LDO No
BM No
D Controlling LDO with the CE pin (Active-high) LDO Yes
BM No
E Controlling BM with the CE pin (Active-high) LDO No
BM Yes

DOCUMENT/CONTACT

Purchase

Technical Support

Package *1 Marking Reliability *2
DFN1212-6 RP124L RP124L
SOT-23-5 RP124N RP124N (-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.

Inquiry about products

Contact Us by Mail

Contact Us by Mail

Contact Form (SSL Form)

Contact Us by Phone

Contact Us by Phone

Contact Phone Number

Inquiry about purchase

Purchase, Request for Samples and Documents

Distributors

Sample Online

Online Distributors