Features

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Input voltage range from 2.2 to 5 V

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7 A continuous current capability

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PWM control signal from 4 Hz to 5 kHz, with 30% to 100% duty cycle

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30 µA battery supply current

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2 programmable timers: T1, T3

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1 fixed timer T2

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Input undervoltage lockout

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VFQFPN 3x3x0.9 16L, 0.5 mm pitch package

Applications

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Electronic cigarettes

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Timing/reset circuitry

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Ground path protection circuitry

Description

The STEC01 is an integrated programmable 12 mΩ power switch managed by the

timer based circuitry.

The device has 3 timers designed to interrupt the ground path of a power application

after a maximum on-time and inhibits the restart of the platform during a cooling

window. The maximum on-time can be set from few seconds to hundreds of seconds,

while the cooling window can be programmed to 69, 345 and 1380 seconds.

3 multi-level input pins, combined with a programmable oscillator and a fixed

oscillator, are used to set the timing.

An input continuous or pulsed signal applied to the PWM pin starts the internal logic

and counters. In case of a normal operation, as soon as the activity on the PWM pin

stops, the device automatically enters idle mode, waiting for a new valid PWM signal

to be applied. If the device detects a fault condition, a reset pulse is generated and

the safety MOSFET is turned off and managed according to a predefined state

machine.

The STEC01 has a continuous current capability up to 7 A through the internal power

MOSFET. A higher current can be supported by using an external power transistor

driven through GDRV pin.

A rising edge on the HW_RESET input pin generates a 57 ms pulse on the

RESET_FAULT pin. This function can be used to notify the connection of an external

power source (e.g. USB).

Product status link

STEC01

Product summary

Order code

STEC01PUR

Package

VFQFPN 3x3x0.9

16L

Ground path safety switch with programmable timers

STEC01

Datasheet

DS13063 - Rev 2 - October 2020

For further information contact your local STMicroelectronics sales office.

www.st.com