TS51221

TS51221 High Efficiency Regulator IC for Wireless Power Receiver Applications TRIUNE PRODUCTS Features Fixed output voltage choices: 1.5V, 1.8V, 2.5V, 3.3V, and 5V with +/- 2% output tolerance Adjustable version output voltage range: 0.9V to 5.5V with +/- 1.5% reference Wide input voltage range: 4.5V to 24V 1MHz +/- 10% fixed switching frequency Input under voltage lockout Full protection for over-current, over-temperature, and VLoOUwT over-voltage external component count Summary Specification Junction operating temperature -40 °C to 125 °C Packaged in a 16pin QFN (3x3) Description The TS51221 is a high-efficiency regulator device for lowpower wireless power receiver applications. The switching frequency of 1MHz enables the use of small filter components resulting in minimal board space and reduced BOM costs. The TS51221 integrates a wide range of protection circuitry including input supply under-voltage lockout, output voltage soft start, current limit, and thermal shutdown. Applications Wireless Charging for portable devices Wear-ables, medical monitors Bluetooth headsets Smart watches Typical Application Circuit DC Supply Application Processor TS51231 TS51221 Application Processor Load TS51221 Final Datasheet April 6, 2015 Transmitter Receiver Rev 1.1 www.semtech.com 1 of 18 Semtech Pinout VSW PGND PGND VSW PIN 1 VSW VCC VCC GND TS51221 VSW VCC BST EN PG NC NC FB Pin Description Pin # 1 2 3 4...