The XC9516 series can offer three different power supplies to TFT-LCD panels. These power supplies consist of a step-up DC/DC converter for a source driver, positive and negative charge pumps for a gate driver. This IC has power-on sequences to keep inrush current as small when output voltage rises. The step-up DC/DC output can be used as power-on sequences with adding a P-channel FET as external component. Also, the FET can shut down a path to the power input line when CE pin is low.
The XC9516 series provides three power supplies for TFT‑LCD panels: a step‑up DC/DC converter for the source driver and positive/negative charge pumps for the gate driver. The IC includes power‑on sequencing to keep inrush current low, and an external P‑channel MOSFET can be added for additional control.
Key features include a wide input voltage range, adjustable oscillation frequency, built‑in over‑current and over‑voltage protection, soft‑start, and thermal shutdown. Typical application circuits and pin assignments are provided, along with detailed electrical characteristics and test procedures.
| Input Voltage Range | 2.5 V – 5.5 V |
|---|---|
| Maximum Output Voltage | 19 V |
| Output Voltage Accuracy | ±1.5 % |
| Oscillation Frequency | 300 kHz – 1.2 MHz (adjustable) |
| Over‑Current Protection | 1.3 A |
| Soft‑Start Time | Internally fixed |
| Operating Ambient Temperature | -40 °C to +85 °C |
| Package | QFN‑20 |
The XC9516 operates with an input voltage from 2.5 V to 5.5 V.
The step‑up DC/DC converter can deliver up to 19 V.
The power‑on sequence is managed by the CE pin; when CE is low the external P‑channel MOSFET shuts off the input path.