AS19-H1G AS19-H1 AS19-H AS19 ECMOS QFP-48

Description

AS19-H1G AS19-H1 AS19-H AS19 ECMOS QFP-48

The AS19-H1G (along with related variants like AS19-H, AS19-H1, and the base AS19) is an integrated circuit (IC) manufactured by E-CMOS Corporation, designed primarily as an 18-channel voltage buffer for TFT LCD panels. It is a critical component typically found on the T-CON (Timing Controller) board or logic boards of LCD TVs and monitors, often responsible for managing gamma correction voltage levels and VCOM drive currents.

A common symptom of this chip failing is a distorted, washed-out, or completely white/blank display screen.

• Functional Description: 18-Channel Voltage Buffer / LCD Logic Chip.
• Package Type: QFP-48 (Plastic Quad Flat Package) / TQFP-48 (Thin QFP).
• Supply Voltage Range: Wide operating range from 6.5V to 18V.
• Output Capabilities: Rail-to-rail output swing with a maximum VCOM drive current of ±100mA.
• Maximum Junction Temperature: Up to +150°C.
• Common Use Case: Repairing LCD power supplies, logic boards, and display artifacts.

• “G” Suffix: Usually denotes a Green / RoHs-compliant (lead-free and halogen-free) package.
• Compatibility: In most display repair scenarios, the AS19-H1G serves as a direct, fully backwards-compatible replacement for standard AS19, AS19-H, or AS19-H1 chips.