TS51111
Final Datasheet Rev 2.2
April 17, 2015
www.semtech.com
5 of 22
Semtech
Proprietary & Condential
Pin Description (QFN)
Pin # Pin Name Pin Function Description
1 EN_MOD Enable Modulation Enables modulation switches
2 TXD UART TX UART Tx
3 RXD UART RX UART Rx
4 PACKS Output Current Sense Sense node for output current
5 PACKP_K PACKP Kelvin PACKP Kelvin
6 PACKP Battery Connection Battery positive terminal
7, 13-14 PDC Rectied voltage Filter capacitor connection for rectied voltage
8, 11-12 VAC1 Coil input AC power input from coil
9-10, 17-18 PGND Power gnd GND for synchronous rectier and charging path
15-16, 20 VAC2 Coil input AC power input from coil
19 VAC_DET VAC Detect Indicates incoming power to external micro
21 OVP OV Clamp Overvoltage pulldown clamp
22 BST2 BST cap Boost capacitor connection for HS FETs
23 BST1 BST cap Boost capacitor connection for HS FETs
24 VCORE VCORE LDO LDO output
25 THERM Thermistor Drive Thermistor drive
26 SDA I2C Data I2C data
27 SCL I2C Clock I2C clock
28 NC No Connect No Connect
29 VREF Vref Output ADC reference output
30 AMUX Analog Sense Analog MUX output
31 UART UART Bus UART bus
32 PACKN PACKN Sense Battery negative terminal
33 AGND Analog Ground Quiet ground connection
34 MOD1 MOD cap connection Pulldown for capacitive modulation
35 MOD2 MOD cap connection Pulldown for capacitive modulation
36 USB USB Supply USB supply and detection input
