Power Switch 12-Pin WLCSP T/R

The FTL11639 is both a timer for resetting a mobile device and an advanced load management device for applications requiring a highly integrated solution. If the mobile device is off, holding /SR0 LOW (by pressing power-on key) for 38 ms ±20% turns on the PMIC. As a reset timer, it has one input and one fixed delay output. It generates a fixed delay of 11.5 s ±20% by disconnecting the PMIC from the battery power supply. FTL11639 does not accept a new input signal for 400 ms ±20% to give the PMIC enough time to turn off. The reset delay can be customized by connecting an external resistor to the DELAY_ADJ pin. As an advanced load management switch, the FTL11639 disconnects loads powered from the DC power rail (<6 V) with stringent off-state current targets and high load capacitances (up to 200 µF). The FTL11639 consists of a slew-rate controlled low-impedance MOSFET switch (21 m? typical at 4.5 V) that has exceptionally low off-state current drain (<0.2 µA typical) to facilitate compliance with standby power requirements. The slew-rate-controlled turn-on characteristic prevents inrush current and the resulting excessive voltage drop on power rails. The low ICCT enables direct interface to lower-voltage chipsets without external translation, while maintaining low power consumption. The device is packaged in advanced, fully “green,” 1.31 mm x 1.62 mm, Wafer-Level Chip-Scale Packaging (WLCSP); providing excellent thermal conductivity, small footprint, and low electrical resistance for a wide application range.

• Factory Customized Turn-on Time: 38 ms
• Factory Customized Turn-off Delay: 900 ms
• Factory Programmed Reset Delay: 11.5 s
• Factory Programmed Reset Pulse: 400 ms
• Low < 0.2 µA Typical Shutdown Current
• Off Pin Turns Off Load Switch to Maintain Battery Charge during Shipment and Inventory (Ready to Use Right Out of the Box)
• Typical RON: 21 mO (Typ.) at VBAT=4.5 V
• 3.8 A / 4.5 A Maximum Continuous Current (JEDEC 2S2P, No VIA / with Thermal VIA)
• Adjustable Reset Delay by an External Resistor (Optional)
• Low ICCT Saves Power Interfacing to Low-Voltage Chips
• Input Voltage Operating Range: 1.2 V to 5.5 V
• Over-Voltage Protection: Allow Input Pins > VBAT
• Slew Rate / Inrush Control with tR: 2.7 ms (Typical)
• Output Capacitor Discharge Function
• Zero-Second Test-Mode Enable
• IEC61000-4-2, Level 4 compliant SYS_WAKE Pin
• ESD Protected:
• 8 kV HBM ESD (per JESD22-A114)
• 10 kV HBM ESD (Pin to Pin, VBAT & VOUT)
• 2 kV CDM (per JESD22-C101)