描述 Description

The SY7636 device is a single-chip power management IC (PMIC) designed for E-Reader applications, and the device supports panel sizes up to 9.7 inches and greater. The device integrates two high efficiency DC/DC boost converters generating ±16V rails that boost to 25V and –20V by two charge pumps to provide the gate driver supply for panels. Two tracking LDOs create ±15V source driver supplies that support up to 200mA of output current. SY7636 also provides an I2C interface control for specific panel requirements.

特性 Features

? 2.9V to 5.5V Input Voltage Range\r
? Boost Converter VP for Positive Rail Base\r
? Inverting Buck-boost Converter VN for Negative Rail Base\r
? Two Adjustable LDOs for Source Driver Supply\r
o VPOS: 15 V, 200mA\r
o VNEG: –15 V, 200mA\r
o Accurate Output Voltage Tracking: VPOS+VNEG = ±50 mV\r
? Two Charge Pumps for Gate Driver Supply\r
o VDDH: 25 V, 10mA (up to 30V)\r
o VEE: –20 V, 15mA (down to -25V)\r
? Adjustable VCOM Driver for Accurate PanelBackplane Biasing\r
o 0 V to –5V\r
o ± 1.5% Accuracy (±10 mV)\r
o 9-Bit Control (10-mV Nominal Step Size)\r
? Internal Active Discharge for VPOS, VNEG, VDDH, and VCOM\r
? Differential Temperature Sense Input and Digital Temperature Reporting\r
? I2C Compatible Interface\r
? Protection: UVLO, OTP, OCP, SCP, UVP\r
? RoHS Compliant and Halogen Free\r
? Compact Package: QFN6x6-48

應用 Application

? Power Supply for Active Matrix Panels\r
? EPD Power Supplies\r
? E-Book Readers