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R5541 Series
18mΩ ON Resistance 3A Load Switch IC

Product Specifications

The R5541 Series are CMOS-based dual supply voltage load switch ICs. The R5541 is an ideal switch for supplying the power from the secondary power source such as the output of a step-down DC/DC converter to the load circuit. A built-in N-channel driver transistor with typically 18 mΩ ON resistance allows the R5541 to provide a low dropout voltage. The R5541 includes a soft-start circuit, a thermal shutdown circuit, a reverse current protection circuit (at off state), and a UVLO circuit.

Besides the low supply current by CMOS, the R5541 has low voltage with an input voltage from 0.6 V. Accordingly, the device supports on the distribution of low voltage power supply system. An ultra-small 6-pin DFN(PLP)1216-6G package is available.

FEATURES

VIN Input Voltage Range (Maximum Rating) 0.6 V to 4.8 V (5.5 V)
VBIAS Input Voltage Range (Maximum Rating) 2.5 V to 5.5 V (6.0 V)
Supply Current Typ. 25 µA (IOUT = 0 mA)
Standby Current Typ. 0.01 µA
Switch ON Resistance Typ. 18 mΩ (VIN = 1.0 V, VBIAS = 5.0 V)
Output Current Max. 3 A
Thermal Shutdown Circuit Stops at 145°C
Functions A single Nch MOSFET Circuit
Soft-start Function
Auto-discharge Function (R5541K001D)
Package DFN(PLP)1216-6G

APPLICATION INFORMATION

TYPICAL CHARACTERISTICS

Switch On Resistance vs. VIN Input Voltage

VOUT Output Voltage On Time vs. DELAY Capacitance

PIN DESCRIPTION

DFN(PLP)1216-6G

DFN(PLP)1216-6G1.2 mm × 1.6 mm
1 CE
2 VIN
3 VBIAS
4 GND
5 VOUT
6 DELAY

R5541 Series for Consumer

APPLICATIONS

  • Secondary Power Source for hand-held communication equipments and laptop PCs

PRODUCT LONGEVITY PROGRAM

R5541 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 auto-discharge function is a user-selectable option.

Product Name   Package Quantity per Reel
R5541K001#-E2 ConsumterPLP DFN(PLP)1216-6G 5,000
  • # … Specify the CE Pin Polarity and auto-discharge option.
    B: Active-High, no auto-discharge function
    D: Active-High, auto-discharge function

* Auto-discharge function quickly lowers the output voltage to 0 V, 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

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Technical Support

Package *1 Marking Reliability *2
DFN(PLP)1216-6G R5541K R5541K

*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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