LTC3202

所属类别：LED驱动
产品名称：用于白光 LED 的低噪声、高效率充电泵
厂商：lt
生产批号：11+
封装：DFN-10, MS-10
库存状态：有库存
库存量：20000
最低订购量：1
详细资料：

Product Introduction

LTC3202 low-noise, high-efficiency charging pumps for white LEDs

peculiarity

低噪声恒定频率操作
输入电流比倍压充电泵小 25%
高输出电流：达 125mA
小型应用电路
已调输出电压或电流
具自动软起动功能
V_IN 范围：2.7V 至 4.5V
无电感器
1.5MHz 开关频率
在停机模式中 I_CC
采用 10 引脚 MSOP 和 3mm x 3mm DFN 封装

description

The LTC®3202 is a low-noise, constant-frequency charge pump DC/DC converter that employs fractional conversion to improve efficiency in white LED applications. The device can generate a regulated voltage or current up to 125mA from a 2.7V to 4.5V input. The low number of external components (two jumper capacitors and two small bypass capacitors on VIN and VOUT) makes the LTC3202 ideal for small, battery-powered applications. An internal 2-position DAC enables LED brightness control by adjusting the LED current. LTC3202 also features thermal shutdown protection and is able to safely withstand continuous short-circuit conditions from VOUT to GND. The built-in soft-start circuit is used to prevent excessive inrush current during start-up. The high switching frequency allows for the use of small external capacitors. A low-current shutdown feature disconnects the load from the VIN and reduces quiescent current to less than 1μA. LTC3202 is available in a 10-pin MSOP package and a 3mm x 3mm DFN package.

apply

白光 LED 背面照明
可编程升压电流源

LTC3202-related ICs include:

Model	Manufacturers	lot number	encapsulation	illustrate
B32023B3104K000	TDK Epcos	17+	DIP	CAP FILM 0.1UF 10% 1.5KVDC RAD
B32023B3104K189	TDK Epcos	17+	DIP	CAP FILM 0.1UF 10% 300VAC RADIAL
B32023B3224M000	TDK Epcos	17+	DIP	CAP FILM 0.22UF 20% 1.5KVDC RAD
B32023B3104M289	TDK Epcos	17+	DIP	CAP FILM 0.1UF 20% 1.5KVDC RAD
B32023B3154K000	TDK Epcos	17+	DIP	CAP FILM 0.15UF 10% 300VAC RAD
B32023B3154M000	TDK Epcos	17+	DIP	CAP FILM 0.15UF 20% 1.5KVDC RAD
B32023B3224K000	TDK Epcos	17+	DIP	CAP FILM 0.22UF 10% 300VAC RAD
B32023B3683M000	TDK Epcos	17+	DIP	CAP FILM 0.068UF 20% 1.5KVDC RAD
B32023B3683M189	TDK Epcos	17+	DIP	CAP FILM 0.068UF 20% 300VAC RAD
B32023B3104M000	TDK Epcos	17+	DIP	CAP FILM 0.1UF 20% 1.5KVDC RAD
B32023A3104M000	TDK Epcos	16+	DIP	CAP FILM 0.1UF 20% 1.5KVDC RAD
B32023A3394M000	TDK Epcos	16+	DIP	CAP FILM 0.39UF 20% 1.5KVDC RAD
B32023A3104M189	TDK Epcos	16+	DIP	CAP FILM 0.1UF 20% 1.5KVDC RAD
B32023A3563M289	TDK Epcos	16+	DIP	CAP FILM 0.056UF 20% 300VAC RAD
B32023A3104M289	TDK Epcos	16+	DIP	CAP FILM 0.1UF 20% 1.5KVDC RAD
B32023A3473M289	TDK Epcos	16+	DIP	CAP FILM 0.047UF 20% 300VAC RAD
B32023A3563M000	TDK Epcos	16+	DIP	CAP FILM 0.056UF 20% 1.5KVDC RAD
B32023A3823K000	TDK Epcos	16+	DIP	CAP FILM 0.082UF 10% 300VAC RAD
B32023A3334K000	TDK Epcos	16+	DIP	CAP FILM 0.33UF 10% 1.5KVDC RAD
B32023A3683K189	TDK Epcos	16+	DIP	CAP FILM 0.068UF 10% 300VAC RAD

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