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R5540 Series
Nch Load Switch IC

Product Specifications

The R5540 Series are CMOS-based load switch IC. The R5540 is an ideal switch to supply the power from the secondary power source such as the output of a step-down DC/DC converter to the load circuit. Due to a built-in N-channel transistor with low on-resistance of 120mΩ, R5540 provides a low dropout voltage. In addition to a peak current limit circuit, R5540 has a short current limit circuit and a soft start function. Due to a reverse current protection circuit, R5540 prevent a reverse current at off state.

Besides the low supply current by CMOS, the R5540 has low voltage with an input voltage from 0.75V (002) and 0.8V (004). Accordingly, the device supports highly integrated, low voltage-driven LSI as a rear stage of the DC/DC converter. Standby mode and auto-discharge function are also available. A 1mm square DFN(PLP)1010-4F package called a flip chip is available.

FEATURES

Input Voltage Range (Maximum Rating) 0.75 V to 3.6 V (Code 002)
0.8 V to 3.6 V (Code 004)
Supply Current at Operation Typ. 9 µA (IOUT=0mA)
Supply Current at Standby Mode Typ. 0.7 µA
Switch On Resistance Typ. 120 mΩ (VIN=1.2V)
Output Current Min. 200 mA (Code 002)
Min. 450 mA (Code 004)
Package DFN(PLP)1010-4F
Built-in Over- current Sensing Circuit Typ. 350 mA (Code 002)
Typ. 700 mA (Code 004)
Function Built-in Soft-start function

APPLICATION INFORMATION

TYPICAL CHARACTERISTICS

Output Voltage vs. Output Current

PIN DESCRIPTION

DFN(PLP)1010-4F1.0 mm × 1.0 mm

DFN(PLP)1010-4F

1 GND
2 CE or CE
3 VIN
4 VOUT

R5540 Series for Consumer

APPLICATIONS

  • For secondary power source for electrical appliances such as mobile communication equipments, cameras, VCRs and Camcorders

PRODUCT LONGEVITY PROGRAM

R5540 series 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 current value, the auto-discharge function and the polarity of CE pin from "L" active, "H" active are selectable at the user’s request.

Product Name   Package Quantity per Reel
R5540Kxxx#-TR ConsumterPLP DFN(PLP)1010-4F 10,000
  • xxx … The output current value can be designated by the following codes.
    002: Output Current (200mA)
    004: Output Current (450mA)
  • # … Auto-discharge function at off state and the polarity of CE pin are option as follows.
    B: "H" active, without auto-discharge function at off state
    C: "L" active, with auto-discharge function at off state
    D: "H" active, with auto-discharge function at off state

DOCUMENT/CONTACT

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Technical Support

Package *1 Marking Reliability *2
DFN(PLP)1010-4F R5540K R5540K

*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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