LTC3201 100mA Ultralow Noise Charge Pump LED Supply with Output Current Adjust

The LTC®3201 is an ultralow noise, constant frequency, charge pump DC/DC converter specifically designed for powering white LEDs. The part produces a low noise boosted supply capable of supplying 100mA of output current. LED current is regulated for accurate and stable backlighting. A 3-bit DAC provides output current adjust for brightness control.

Low external parts count (one small flying capacitor and three small bypass capacitors) and small MSOP-10 package size make the LTC3201 ideally suited for space constrained applications. An input noise filter further reduces input noise,thus enabling direct connection to the battery. High switching frequency enables the use of small external capacitors.

The LTC3201 contains overtemperature protection and can survive an indefinite output short to GND. Internal soft-start circuitry also prevents excessive inrush current on start-up. A low current shutdown feature disconnects the load from VIN and reduces quiescent current to less than 1µA

产品特点 Features

Input Noise Filter Minimizes Supply Noise
Constant Frequency Operation
3-Bit LED Current Control
No Inductors
Low Shutdown Current: IIN < 1µA
Output Current: 100mA
VIN Range: 2.7V to 4.5V
1.8MHz Switching Frequency
Soft-Start Limits Inrush Current at Turn-On
Short-Circuit and Overtemperature Protected
Available in 10-Pin MSOP Package

应用

White LED Backlighting
Programmable Boost Current Source

典型应用图

参数

LTC3201 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) *
LTC3201EMS	MSOP	10	E	$2.25	$1.90
LTC3201EMS#PBF	MSOP	10	E	$2.25	$1.90
LTC3201EMS#TR	MSOP	10	E		$1.96
LTC3201EMS#TRPBF	MSOP	10	E		$1.96

LTC3201 数据手册及相关资料下载

数据手册(英文) : LTC3201 - 100mA Ultralow Noise Charge Pump LED Supply with Output Current Adjust.PDF
可靠性数据 : R415 Reliability Data .PDF