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

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  • Description

    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.

  • Spec
    Consumer Industrial Automotive
    Input Voltage Range 1.6 V to 5.25 V (6.0 V)
    Operating Temperature Range -40°C to 85°C (125°C) -40°C to 105°C (125°C) -40°C to 105°C (150°C)
    Supply Current Typ. 350 µA
    Standby Current Typ. 2 µA
    Output Voltage Range Internally Fixed Ver.: 0.8 V to 4.2 V (0.1 V step)
    Externally Adjustable Ver.: 0.8 V to 4.2 V
    Internally Fixed Ver.: 0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.0 V, 3.3 V
    Externally Adjustable Ver.: 0.8 V to 4.2 V
    Internally Fixed Ver.: 0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.0 V, 3.3 V
    Externally Adjustable Ver.: 0.8 V to 4.2 V
    Output Voltage Accuracy ±1.0% (Ta = 25°C)
    (±15 mV accuracy at VSET ≤ 1.5 V, Ta = 25°C)
    Output Voltage Temperature Coefficient Typ. ±100 ppm/°C
    Dropout Voltage Typ. 0.51 V (VOUT = 2.5 V)
    Line Regulation Typ. 0.1%/V
    Output Current Min. 3 A
    Ripple Rejection Typ. 65 dB (f = 1 kHz, VOUT = 2.5 V)
    Package TO-252-5-P2

    Protections / Functions

    TSD Reverse Current Limit ISC Inrush Constant Slope ECO mode Auto Discharge External Driver
  • Technical
    Documents
    • SPICE model download

      You can download the product's SPICE model. Select the SPICE model of the product you are considering.

    • RP108J081x Typical Application: Externally adjustable output voltage type

      RP108J081x Typical Application: Externally adjustable output voltage type

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

    • RP108Jxx1x Typical Application: Internally fixed output voltage type

      RP108Jxx1x Typical Application: Internally fixed output voltage type

      The VOUT pin should be connected to the VFB pin

    • RP108J251x Dropout Voltage vs. Output Current

      RP108J251x Dropout Voltage vs. Output Current

  • Quality &
    Packages
    • 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.

Download Datasheet

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

VIN
min (V)
1.6
VIN
max (V)
5.25
VOUT
min (V)
0.8
VOUT
max (V)
4.2
IOUT
(mA)
3000
ISS
(µA)
350
Functions Constant Slope,Auto Discharge