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RP108 Series
Low Voltage 3A Voltage Regulator (LDO Regulator) with Reverse Current Protection

Product Specifications

The RP108 Series are CMOS-based LDO regulators featuring 3A output with low on-resistance. The CMOS process provides both large output current and low supply current. The dropout voltage is significantly lower than bipolar regulators. The RP108 handles low voltage with an input voltage from 1.6V and an output voltage from 0.8V. Accordingly, the device supports highly integrated, low voltage-driven LSI as a rear stage of the DC/DC converter.

RP108J081x can set adjustable output voltage with external resistors. The CE pin can switch the regulator into standby mode. In addition to a fold-back protection circuit built into conventional LDO regulators, RP108 has a thermal shutdown circuit, a reverse current protection circuit and a constant slope circuit. The constant slope circuit is a soft start function to prevent inrush current and malfunction of devices.

FEATURES

  Consumer Industrial Automotive
Input Voltage Range (Maximum Rating) 1.6 V to 5.25 V (6.0 V)
Operating Temperature Range -40°C to 85°C -40°C to 105°C
Output Current Min. 3 A
Supply Current Typ. 350 µA
Standby Current Typ. 2 µA
Output Voltage Range Fixed Output Voltage Type: 0.8 V to 4.2 V (0.1V steps) 0.8 V/ 1.2 V/ 1.5 V/ 1.8 V/ 2.5 V/ 3.0 V/ 3.3 V
Adjustable Output Voltage Type: 0.8 V to 4.2 V
Output Voltage Accuracy ±1.0% (Ta = 25°C)
(±15 mV accuracy, when VOUT ≤ 1.5 V)
Output Voltage Temperature-Drift Coefficient Typ. ±100 ppm/°C
Ripple Rejection Typ. 65 dB (f = 1 kHz, VOUT = 2.5 V)
Dropout Voltage Typ. 0.51 V (VOUT = 2.5 V)
Line Regulation Typ. 0.1%/V
Package TO-252-5-P2
Built-in Fold-back Protection Circuit Typ. 220 mA
Built-in Thermal Shutdown Circuit Stops at 165°C
Protection Function Built-in Constant Slope Circuit
Built-in Reverse Current Protection Circuit
Recommended Ceramic Capacitors 10 µF or more

APPLICATION INFORMATION

RP108Jxx1x
Internally fixed output voltage

The VOUT pin should be connected to the VFB pin

RP108J081x
Ext. adjustable output voltage

Output voltage should be set up to 4.2V
VOUT = 0.8×((R1+R2) / R2)

TYPICAL CHARACTERISTICS

RP108J251x Dropout Voltage vs. Output Current

PIN DESCRIPTION

TO-252-5-P26.6 mm × 9.9 mm

TO-252-5-P2

1 CE
2 VDD
3 GND
4 VOUT
5 VFB

*) The tab is substrate level. (GND)
The VOUT pin should be connected to the VFB pin when the output voltage is fixed inside the IC.


RP108 Series for Consumer

APPLICATIONS

  • Power source for battery-powered equipments
  • Power source for portable communication equipments such as cameras and VCRs
  • Power source for electrical home appliances

PRODUCT LONGEVITY PROGRAM

RP108 series operate PRODUCT LONGEVITY PROGRAM.
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, auto discharge function, and the soft-start time for the ICs can be selected at the user’s request.

Product Name   Package Quantity per Reel
RP108Jxx1#(y)-T1-FE ConsumterPLP TO-252-5-P2 3,000
  • xx … The set output voltage (VSET) can be designated in the range of 0.8V(08) to 4.2V(42) in 0.1V steps.
  • y … If the output voltage includes the 3rd digit, indicate the digit of 0.01V. (1.25V, 1.85V, 2.85V)
    Ex.
    If the output voltage is 1.25V, RP108J121#5-T1-FE.
    If the output voltage is 1.85V, RP108J181#5-T1-FE.
    If the output voltage is 2.85V, RP108J281#5-T1-FE.
  • # … Designation of auto-discharge function at off state and the soft-start time
    B: No auto-discharge function, soft start time typ. 180 µs
    D: Auto-discharge function, soft start time typ. 180 µs
    E: No auto-discharge function, soft start time typ. 570 µs
    F: Auto-discharge function, soft start time typ. 570 µs

* Auto-discharge function quickly lowers the output voltage to 0V, when the chip enable signal is switched from the active mode to the standby mode, by releasing the electrical charge accumulated in the external capacitor.

DOCUMENT/CONTACT

Purchase

Technical Support

Package *1 Marking Reliability *2
TO-252-5-P2 RP108J RP108J (-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.


RP108 Series for Industrial

This product is a high-reliability semiconductor device for industrial application that has passed both the screening at high temperature and the reliability test with extended hours. Ricoh accommodates requests including the long-time operation and high temperature environment use.


APPLICATIONS

  • Industrial equipments such as FAs and smart meters
  • Equipments used under high-temperature conditions such as surveillance camera and vending machine
  • Equipments accompanied by self-heating such as motor and lighting

PRODUCT LONGEVITY PROGRAM

RP108 series operate PRODUCT LONGEVITY PROGRAM.
This program has been introduced to help customers select the most appropriate part for applications that require long life cycles.


Operating Temperature Range : -40°C to 105°C


Set Output Voltage

The RP108 is available in seven fixed output voltage options: 0.8V, 1.2V, 1.5V, 1.8V, 2.5V, 3.0V and 3.3 V. Contact our sales representatives for other voltages.
RP108J081x is also available in the adjustable output voltage version, which allows output voltages that range from 0.8 V to 4.2 V via an external divider resistor.


SELECTION GUIDE

The output voltage and auto-discharge function, and the soft-start time for the device can be selected at the user’s request.

Product Name   Package Quantity per Reel
RP108Jxx1#-T1-YE IndustrialPLP TO-252-5-P2 3,000
  • xx … Specify the set output voltage (VSET)
    0.8 V (08), 1.2 V (12), 1.5 V (15), 1.8 V (18), 2.5 V (25), 3.0 V (30), 3.3 V (33)
  • # … Specify the auto-discharge function at off state and the soft-start time
    B: No auto-discharge function, soft start time typ. 180 µs
    D: Auto-discharge function, soft start time typ. 180 µs
    E: No auto-discharge function, soft start time typ. 570 µs
    F: Auto-discharge function, soft start time typ. 570 µs

* Auto-discharge function quickly lowers the output voltage to 0 V by releasing the electrical charge in the external capacitor when the chip enable signal is switched from the active mode to the standby mode.

DOCUMENT/CONTACT

Purchase

Technical Support

Package*1 Reliability*2
TO-252-5-P2 RP108J (-YE)

*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.


RP108 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.
RP108 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

AEC-Q100 Grade 2 Compliant


PRODUCT LONGEVITY PROGRAM

RP108 series operate PRODUCT LONGEVITY PROGRAM.
This program has been introduced to help customers select the most appropriate part for applications that require long life cycles.


Operating Temperature Range : -40°C to 105°C


Set Output Voltage

The RP108 is available in seven fixed output voltage options: 0.8V, 1.2V, 1.5V, 1.8V, 2.5V, 3.0V and 3.3 V. Contact our sales representatives for other voltages.
RP108J081x is also available in the adjustable output voltage version, which allows output voltages that range from 0.8 V to 4.2 V via an external divider resistor.


Tjmax 150°C

Unlike the rating of the products for consumer and industrial applications at Tjmax = 125°C, the products for automotive applications are rated at high temperature of Tjmax = 150°C. The power dissipation is also rated at high temperature.


SELECTION GUIDE

The output voltage, chip-enable polarity, auto-discharge function, and package type for this device can be selected at the user’s request.

Product Name   Package Quantity per Reel
RP108Jxx1#-T1-AE AutomotiveAutomotive AccessoriesAEC-Q100PLP TO-252-5-P2 3,000
  • xx … Specify the set output voltage (VSET)
    0.8 V (08), 1.2 V (12), 1.5 V (15), 1.8 V (18), 2.5 V (25), 3.0 V (30), 3.3 V (33)
  • # … Specify the auto-discharge function at off state and the soft-start time
    B: No auto-discharge function, soft start time typ. 180 µs
    D: Auto-discharge function, soft start time typ. 180 µs
    E: No auto-discharge function, soft start time typ. 570 µs
    F: Auto-discharge function, soft start time typ. 570 µs

* Auto-Discharge function quickly lowers the output voltage to 0 V by releasing the electrical charge in the external capacitor when the chip enable signal is switched from the active mode to the standby mode.

DOCUMENT/CONTACT

Purchase

Technical Support

Package*1 Reliability*2
TO-252-5-P2 RP108J (-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.

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