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R5541 Series
18mΩ ON Resistance 3A Load Switch IC
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.
Specs & Datasheets
| Consumer | |
|---|---|
| Input Voltage Range | 0.6 V to 4.8 V (5.5 V) |
| Operating Temperature Range | -40°C to 85°C (125°C) |
| Supply Current | Typ. 25 µA (IOUT = 0 mA) |
| Standby Current | Typ. 0.01 µA |
| Output Current | Max. 3 A |
| ON-resistance | 18 mΩ (VIN = 1.0 V, VBIAS = 5.0 V) |
| Internal FET | Nch |
| Package | DFN(PLP)1216-6G |
| VBIAS Input Voltage Range (Maximum Rating) | 2.5 V to 5.5 V (6.0 V) |
| Thermal Shutdown | 145°C |
Protections / Functions
| TSD | Reverse | OCP | UVLO | OVLO | Soft Start | PGOOD | Auto Discharge | Reset |
|---|---|---|---|---|---|---|---|---|
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Technical Documents
Typical Application
Switch On Resistance vs. VIN Input Voltage
VOUT Output Voltage On Time vs. DELAY Capacitance
Quality & Packages
| Product Name | Compatibility | Package | Marking | Reliability |
|---|---|---|---|---|
| R5541K001x-E2 |
|
DFN(PLP)1216-6G | R5541K | R5541K |
C
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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Please contact us or our distributors for unpublished reliability information.
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Functional Description
| TSD | Thermal Shutdown Function |
|---|---|
| Reverse Current Protection | Reverse Current Protection |
| OCP | Overcurrent Protection |
| UVLO | Undervoltage Lockout Protection |
| OVLO | Overvoltage Lockout Protection |
| Soft Start | Soft Start Function |
| PGOOD | Power Good Output |
| Auto Discharge | Auto Discharge Circuit |