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LM3697

SNOSCS2D – NOVEMBER 2013 – REVISED MARCH 2019

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5 Pin Configuration and Functions

YFQ Package

12-Pin DSBGA

Pin Functions

TYPE

DESCRIPTION

NUMBER

NAME

PWM

Input

PWM brightness control input for CABC operation. PWM is a high-impedance input and cannot

be left floating, if not used connect to GND.

SDA

I/O

Serial data connection for I2C-compatible interface.

HWEN

Input

Hardware enable input. Drive this pinl high to enable the device. Drive this pin low to force the

device into a low power shutdown. HWEN is a high-impedance input and cannot be left floating.

HVLED1

Input

Input pin to high-voltage current sink 1 (40 V maximum). The boost converter regulates the

minimum of HVLED1, HVLED2 and HVLED3 to VHR.

SCL

Input

Serial clock connection for I2C-compatible interface.

Input

Input voltage connection. Bypass IN to GND with a minimum 2.2-µF ceramic capacitor.

HVLED2

Input

Input pin to high-voltage current sink 2 (40 V maximum). The boost converter regulates the

minimum of HVLED1, HVLED2 and HVLED3 to VHR.

GND

Ground

GND

Ground

HVLED3

Input

Input pin to high-voltage current sink 3 (40 V maximum). The boost converter regulates the

minimum of HVLED1, HVLED2 and HVLED3 to VHR.

OVP

Input

Overvoltage sense input. Connect OVP to the positive terminal of the inductive boost's output

capacitor (COUT).

Output

Drain connection for the internal NFET. Connect SW to the junction of the inductor and the

Schottky diode anode.

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