TS51111 High Efficiency Synchronous Rectifier and Charging IC for Wireless Power Applications POWER MANAGEMENT Features Description The TS51111 is a fully-integrated synchronous rectifier for wireless High efficiency synchronous rectification of AC input charging applications with additional integrated components to Support applications for up to 10W minimize system BOM. Supports both Direct and Indirect Charging applications Supports WPC Qi compliant and non-compliant systems The TS51111 includes a high efficiency synchronous rectifier to Low Rds-on rectifier switches convert the input AC power signal to a DC output level for battery High voltage input for higher power systems charging. The device supports both direct battery charging and >98% efficiency at high currents indirect power applications. Low Rds-on switches minimize power Integrated switches for load modulation dissipation. High voltage input capability allows for simple and Integrated switch for battery disconnect robust secondary side charger implementation. An integrated switch Integrated precharge current source provides the battery charging path and combined with the rectifier 50mA output low Iq LDO provides back feed protection to the AC inputs. A precharge current source is also included for low battery voltage precharge operation. Analog mux for ADC sensing Communication capability is achieved using integrated high voltage Supply Under Voltage Lockout switches. Low external component count Ultra-low standby quiescent current Junction operating temperature -40C to 125 C The TS51111 includes several additional modules to allow simple integration into wireless power systems. Integrated resistor dividers with zero-current off-mode allow external ADC measurement of Applications PDC, PACKP, USB and thermistor voltages. High voltage switches are Cell Phones and Smart Phones included for communication modulation. Tablet Computers Power to an external controller is provided through an integrated eReaders LDO. The ultra-low quiescent current regulator can supply high Laptop Computers output currents at low dropout with minimal current draw from the Small Digital Cameras battery. Portable Video Recorders Wireless charging for portable devices This device is in a 45 pin WCSP package. TS51111 1 of 18 www.semtech.com Final Datasheet Rev 2.4 Semtech January 4, 2018 Pinout -WCSP (Top View) A4 A5 A1 A2 A3 MOD1 MOD2 SCL AMUX AGND B4 B5 B1 B2 B3 SDA VREF PACKN USB EN MOD C4 C5 C1 C2 C3 VCORE UART TXD PACKS THERM D4 D5 D1 D2 D3 RXD PACKP BST1 OVP PACKP E4 E5 E1 E2 E3 BST2 PDC PDC PDC PDC F4 F5 F1 F2 F3 VAC2 VAC2 VAC2 VAC1 VAC1 G4 G5 G1 G2 G3 VACDET PGND PGND PGND PGND H4 H5 H1 H2 H3 VAC2 VAC2 VAC2 VAC1 VAC1 I4 I5 I1 I2 I3 PDC PDC PDC PDC PDC TS51111 2 of 18 www.semtech.com Final Datasheet Rev 2.4 Semtech January 4, 2018