Features
• Input voltage range from 2.2 to 5 V
• 12 mΩ typ. N-channel FET RDS(on)
• 7 A continuous current capability
• PWM control signal from 4 Hz to 5 kHz, with 30% to 100% duty cycle
• 30 μA battery supply current
• 2 programmable timers: T1, T3
• 1 fixed timer T2
• Input undervoltage lockout
• VFQFPN 3x3x0.9 16L, 0.5 mm pitch package

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).

Applications
• Electronic cigarettes
• Timing/reset circuitry
• Ground path protection circuitry