LT3489 2MHz Boost DC/DC Converter with 2.5A Switch and Soft-Start

The LT3489 is a ﬁxed frequency step-up DC/DC converter containing an internal 2.5A, 40V switch. The LT3489 is ideal for large TFT-LCD panel power supplies. The LT3489 switches at 2MHz, allowing the use of tiny, low proﬁle inductors and low value ceramic capacitors. Loop compensation can be either internal or external, giving the user ﬂexibility in setting loop compensation and allowing optimized transient response with low ESR ceramic output capacitors. Soft-start is controlled with an external capacitor, which determines the input current ramp rate during start-up.

The 8-lead MS8E package and high switching frequency ensure a low proﬁle overall solution less than 1.1mm high

产品特点 Features

2.5A, 0.12Ω, 40V Internal Switch
2MHz Switching Frequency
Integrated Soft-Start Function
VIN Range: 2.6V to 16V
Adjustable Output from VIN to 40V
Low VCESAT Switch: 110mV at 1A (Typical)
8V at 610mA from a 3.3V Input
Internal or External Loop Compensation
Small 8-Lead MS8E

参数

应用

TFT-LCD Bias Supplies
GPS Receivers
DSL Modems
Local Power Supply

典型应用图

LT3489 订购信息和价格参考Package Variations and Pricing

器件型号	封装	引脚	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量) *
LT3489EMS8E	MSOP	8	E	$2.79	$1.95
LT3489EMS8E#PBF	MSOP	8	E	$2.79	$1.95
LT3489EMS8E#TR	MSOP	8	E		$2.01
LT3489EMS8E#TRPBF	MSOP	8	E		$2.01

LT3489 数据手册及相关资料下载

数据手册(英文) : LT3489 - 2MHz Boost DC/DC Converter with 2.5A Switch and Soft-Start.PDF
可靠性数据 : R530 Reliability Data .PDF