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1 Features

1? 8-Channel Level-Shifter (STV, RESET, 6 × CLK)

? High Output-Voltage Level 16.5 V to 45 V (VGH)

? Low Output-Voltage Level Down to –20 V (VGL)

? Selectable Charge-Sharing

– No Charge-Sharing

– 2-Channel Charge-Sharing

– 3-Channel Charge-Sharing

? 2-Channel Panel Discharge

? T-CON Failure Detection

– TPS65197: Logic Resets by STV Pulse

– TPS65197B: No Reset of the Logic

? Latched Shut-Down Detection (Clocks to VGH)

? Supports 100-kHz Clock Operating Frequency

? 28-Pin 4-mm × 4-mm QFN Package

2 Applications

? Gate-in-Panel (GIP) LCD

– Notebook

– Monitor

– TV

3 Description

The TPS65197/B is an 8-channel level-shifter with

discharge function intended for use in LCD display

applications such as Notebooks, Monitors and TVs.

The device converts the timing-controller (T-CON)

logic-level signals to the high-level signals needed by

the gate-in-panel (GIP) display.

The clock outputs, CLKOUTx, support normal level

shifting operation and 2-channel or 3-channel chargesharing,

which can be used to improve picture quality

and power consumption. At power down, all outputs

follow their input signals as long as possible; when

the discharge function is used, the outputs are pulled

high (VGH).

The TPS65197 implements a logic reset to ignore

wrong T-CON signals after the rising STV edge which

forces all 6 output clocks to VGL1. The next CLKIN1

rising edge unlocks the logic and enables normal

operation. The TPS65197B does not have the logic

reset and always follows its input signals.