GLF74521
Ultra-Low Current Consumption Power Multiplexer Switch with Auto & Manual Input Selection
0.97mm x 1.47mm
0.55mm thick
0.5mm pitch
6 bump
WLCSP
Features
- Two-Input and Single-Output Power Multiplexer
- Automatic and Manual Input Selection Mode
- Supply Voltage Range:
- 1.5 V to 5.5 V
- 6 Vabs Max
- RON:
- 35 mΩ Typ. at 5.5 VIN1 or VIN2
- 43 mΩ Typ. at 3.3 VIN1 or VIN2
- 2.5 A Continuous Output Current Capability Per Channel
- Ultra-Low Supply Current at Operation
- IQ: 4 μA Typ at 5.5 VIN
- Ultra-Low Stand-by Current
- ISD: 20 nA Typ at 5.5 VIN
- Smart Control Pins
- IEN and ISEL: 3 nA Typ at VEN or VSEL > VIH
- REN and RSEL: 500 kΩ Typ
- Integrated Output Discharge Switch
- No Cross Conduction Between Two Inputs
- Reverse Current Blocking when Disabled
- Operating Temperature Range: -40 °C to 85 °C
- HBM: ±6 kV, CDM: ±2 kV
Applications
- Wearables / Hearables
- Smart IoT Devices
- Portable Devices
- Backup Power System
FUNCTIONAL BLOCK DIAGRAM
APPLICATION SCHEMATIC
PRODUCT DESCRIPTION
The GLF74520 and GLF74521 are integrated power multiplexer switch with dual independent power switches connected to a single output pin to enable seamless transition between two input sources.
The GLF74520 and GLF74521 provide an automatic selection mode as well as a manual selection mode by the combination of the logic input pins of EN and SEL. The EN input pin is used along with the select (SEL) input pin to select the automatic switching function, select VIN1 only, select VIN2 only, or turn both switches off. In the automatic selection mode, the GLF74520 and GLF74521 automatically select the higher input voltage source out of two input DC power supplies.
The GLF74520 and GLF74521 feature an ultraefficient IQSmartTM technology that supports the lowest RON, quiescent current (IQ) and shutdown current (ISD) in the industry. Low RON reduces conduction losses, while low IQ and ISD solutions help designers to reduce parasitic leakage current, improve system efficiency, and increase battery lifetime.
The GLF74520 and GLF74521 block any crossconduction current between two input sources. When the switch is disabled, the GLF74520 and GLF74521 prevent the reverse current to the input source from the output at any higher Vout than Vin condition.
