TA9687GN Datasheet – LCDM Inverter Controller ( PDF )

Part Number: TA9687GN

Function: LCDM Inverter Controller

Package: 16 SOP Type

Manufacturer: O2Mirco


TA9687GN datasheet inverter controller


The TA9687GN is a high performance, cost-effective CCFL (Cold Cathode Fluorescent Lamp) controller designed for driving large-size Liquid Crystal Display (LCD) applications requiring 2 to 6 CCFLs. The controller converts unregulated DC voltages into a nearly sinusoidal lamp voltage and current waveforms.

The TA9687 supports full-bridge power conversion topologies while maintaining high-efficiency operation. The controller provides a soft-start operation, current and voltage regulation, overvoltage and over-current protection, high drive capability.

The control logic provides a regulated ignition voltage and appropriate protection features for over-voltage or over-current conditions.


TA9687GN pinout

1 I VSEN Voltage Sense Feedback
2 I/O SSTCMP Capacitor for Soft-Start and Loop Compensation
3 I/O CT Timing Resistor and Capacitor for Operation and Striking Frequency
4 I/O RT1 Timing Resistor for Striking Frequency
5 — GNDA Signal Ground
6 O PDR2 High Side Driver Output 2
7 — GNDP Power Ground
8 O NDR2 Low Side Driver Output 2
9 O NDR1 Low Side Driver Output 1
10 O PDR1 High Side Driver Output 1
11 — VDDA Input Power Pin
12 I/O TIMER Timing Capacitor for Delay Timer
13 I PWM External PWM Dimming Input
14 I ISEN Current Sense Feedback
15 I OVPT Over-Voltage Protection Threshold Voltage
16 I ENA IC Enable/Disable



• Constant operating frequency
• Drives positive/negative-impedance lamps during ignition
• High drive current for external MOSFETs
• User-defined ignition time and shutdown delay time
• Built-in intelligence for ignition and normal operation of CCFLs
• Built-in open-lamp protection and overvoltage protection for backlight system
• Optimized soft-start function

TA9687GN Datasheet

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