Pin configuration

STWLC04

4/18

DocID029626 Rev 2

2

Pin configuration

Figure 2: Pin configuration Flip Chip 77 bumps (3.12x4.73 mm)

Table 2: Pin description

Pin name

Pin position

Description

CSP 77L

AC1

F6, F7, G7

RX coil circuit terminal connection

AC2

E9, E10, E11

RX coil circuit terminal connection

MOD1

G6

Load modulation capacitor 1 connection

MOD2

F11

Load modulation capacitor 2 connection

CLMP1

G5

Clamping capacitor/resistor 1 connection

CLMP2

F9

Clamping capacitor/resistor 2 connection

RMOD

E7

Modulation current sink connection, internally connected to VRECT

RMOD1

G11

Load modulation external resistor connection.

RM resistor is not necessary for most applications

VRECT

F10, G10

Synchronous rectifier output

BOOT1

G8

Bootstrap capacitor connection for the rectifier

BOOT2

E8

Bootstrap capacitor connection for the rectifier

BOOT

G9

Bootstrap capacitor connection for the step-down converter

CLAMP

F8

Low power clamp connection

VSUP

A8, B8, B7

Power supply input for the step-down converter