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.
|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)
|Built-in Over- current Sensing Circuit||Typ. 350 mA (Code 002)
Typ. 700 mA (Code 004)
|Function||Built-in Soft-start function|
Output Voltage vs. Output Current
|2||CE or CE|
PRODUCT LONGEVITY PROGRAM
R5540 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.
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|