G5512 Global Mixed-mode Technology Inc. Integrated Power Solution for TFT-LCD Features General Description The G5512 includes a step-up converter, a positive charge pump, and a negative charge pump. Also included is a logic-controlled high-voltage switch with built-in delay. 2.5V to 5.5V Input Supply Range 1.2MHz Current-Mode Step-Up Converter Built-In 18V, 0.15Ω n-Channel MOSFET Charge Pumps for VGON and VGOFF Thermal Overload Protection TQFN5X5-20 Package The step-up DC/DC converter provides the regulated power supply for the panel source driver IC. The converter is a high performance current-mode regulator with operating frequency at 1.2MHz. It also provides fast transient response and high efficiency. Applications The charge pumps in G5512 regulate TFT gate-on and gate-off power supplies for LCD panel. LCD Monitor Panels Notebook Computer Displays LCD TVs G5512 is available in TQFN5X5-20 package. Ordering Information ORDER NUMBER MARKING TEMP. RANGE PACKAGE (Green) 5512 -40°C to 85°C TQFN5X5-20 G5512RS1U Note: RS: TQFN5X5-20 1: Bonding Code U: Tape & Reel ADJ 1 VIN 2 VGHM NC VGH FBP CTL 20 19 18 17 16 Pin Configuration 21 BGND Thermal Pad 15 VREF 14 FBN 13 AGND 9 10 SUP DRVN COMP SW 8 DRVP 11 FB 12 5 7 4 PGND SW 6 3 PGND VIN G5512 TQFN5X5-20 Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation. TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 0.3 Jun 02, 2011 1