Advanced Analog Technology AAT1922
The AAT1922 contains 8 channel level-shifter scan drivers which are designed to drive the TFT panels with row drivers integrated on the panel glass. Each level-shifter can swing from +42V to –18V and features low impedance output stages that achieve fast rise and fall times even when driving the capacitive loading typically present in LCD display applications. The scan-driver outputs (STVOUT, RESETOUT, and CLKOUT1~CLKOUT6) converts the logic-level signals generated by the Timing Controller (T-CON) to the high-level signals used by the display panel.| Part No. | AAT1922 |
|---|---|
| Datasheet | AAT1922 Download |
| Manufacturer |  Advanced Analog Technology |
| Description | LEVEL SHIFTER |
| Buy | Stock & Price |
FEATURES
GENERAL DESCRIPTION
STVOUT Output for STVIN RESETOUT Output for RESETIN 6-Channel CLKOUTx Outputs for CLKINx Charge-Sharing Selectable DISCH1 & DISCH2 Outputs for Panel Discharge Level-Shifter Supply Voltage Range Max. +45V for High Level (VGH) Min. –20V for Low Level (VGL1 & VGL2) Protection Under-Voltage Lockout (UVLO) Over Temperature Protection (OTP) WQFN28-4x4 Package Available PIN CONFIGURATION CS_4 CLKOUT5 CLKOUT6 STVOUT RESETOUT DISCH2 DISCH1 STVIN CLKIN1 CLKIN2 CLKIN3 CLKIN4 CLKIN5 CLKIN6 And the clock outputs (CLKOUTx) support normal operation and two different charge-sharing methods for improving TFT LCD image quality and power consumption. DISCH1 and DISCH2 driver outputs are the dedicated discharge channel. It works with the integrated voltage detector. When system power down, the voltage detector will command the discharge channel DISCH1 and DISCH2 to swing its output to VGH so as to remove residual image quickly. The AAT1922 provides various protection mechanisms such as input under-voltage lockout (UVLO) and over temperature protection.
