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GLF76521/T

Integrated Load Switch with Deep Sleep Mode

home Product System Power Protection IC GLF76521/T
Product Features

  • Ultra-Low ISD

    7nA Typ @ 3.6VIN

  • Ultra-Low IQ

    3nA Typ @ 5.5VIN

  • Low RON

    31mΩ Typ @ 5.5VIN

  • IOUT Max

    2A

  • Wide Input Range

    1.8V to 5.5V ；6V abs max

  • Deep Sleep Mode by /SRO and OFF pins to disconnect the downstream system from the battery source

  • Integrated Delay Time(Hold Time) to Deep Sleep

    1.8s

  • Turn-Off Delay Time

    1.8s

  • Controlled Output Rise Time

    1ms at 3.6VBAT

  • Integrated Output Discharge Switch When Disabled

  • Operating Temperature Range

    -40 to 85 °C

  • HBM / CDM

    6kV / 2kV

  • Ultra-Small

    0.97 mm x 1.47 mm x 0.55mm

GLF76521/T
GLF76521/T
Product manual
Sample application
Product Description

The GLF76521 / GLF76521T is an ultra-thin, ultra-efficient IQSmartTM load switch with an integrated deep sleep timer for wearables and IoT devices.

The /SRO pin activates ultra-deep sleep mode, conserving power by isolating the system from the battery with ultra-low standby current of 7 nA typical. The load switch, placed between the battery and the system, can help significantly extend system battery life in mobile devices during shipping or periods of extended off time.

The part supports two methods for entering deep sleep mode: through user input or interrupt initiated events. Deep sleep can be enabled or exited by holding the /SRO pin low for a predefined delay time (ideal for user control) or by providing a rising edge signal to the OFF pin (ideal for logic or interrupt control).

To exit deep sleep, the user can hold down the /SRO pin to ground for 0.3 seconds, or simply connect a charger adapter to trigger the Wake pin.

The GLF76521 / GLF76521T helps to reduce power consumption with the best in class RON and a breakthrough on state IQ of only 3 nA typical when the switch is on.

The GLF76521 / GLF76521T integrated 1 ms slew rate control can also enhance system reliability by mitigating bus voltage swings during switching events. Uncontrolled switching can generate high inrush currents that result in voltage droop and / or bus reset events. The GLF slew rate control specifically limits inrush currents during turn-on to minimize voltage droop. The output discharge functions ensures the output voltage will drop off quickly when the switch is disabled.

The GLF76521 is available in 0.97mm x 1.47mm x 0.55mm wafer level chip scale package (WLCSP).

The GLF76521T Ultra-thin: 0.35 mm typ, 0.4 mm Max.