LTC3200 Low Noise, Regulated Charge Pump DC/DC Converters

The LTC®3200/LTC3200-5 are low noise, constant frequency switched capacitor voltage doublers. They produce a regulated output voltage from a 2.7V to 4.5V input with up to 100mA of output current. Low external parts count (one flying capacitor and two small bypass capacitors at VIN and VOUT) make the LTC3200/LTC3200-5 ideally suited for small, battery-powered applications.

A new charge-pump architecture maintains constant switching frequency to zero load and reduces bith output and input ripple. The LTC3200/LTC3200-5 have thermal shutdown capability and can survive a continuous short-circuit from VOUT to GND. Built-in soft-start circuitry prevents excessive inrush curreent during start-up.

High switching frequency enables the use of small ceramic capacitors. A low current shutdown feature disconnects the load from VIN and reduces quiescent current to <1µA.

The LTC3200 is available in an 8-pin MSOP package and the LTC3200-5 is available in a 6-pin SOT-23

产品特点 Features

Low Noise Constant Frequency Operation
Output Current: 100mA
Fixed 5V ±4% Output (LTC3200-5) or ADJ
VIN Range: 2.7V to 4.5V
Automatic Soft-Start Reduces Inrush Current
2MHz Switching Frequency
No Inductors
ICC < 1µA in Shutdown
Available in 8-Pin MSOP (LTC3200) and Low Profile (1mm) 6-Pin ThinSOT™ (LTC3200-5) Packages

应用

Li-Ion Battery Backup Supplies
Local 3V to 5V Conversion
Smart Card Readers
PCMCIA Local 5V Supplies
White LED Backlighting

典型应用图

参数

LTC3200 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) *
LTC3200EMS8	MSOP	8	E	$2.00	$1.70
LTC3200EMS8#PBF	MSOP	8	E	$2.00	$1.70
LTC3200EMS8#TR	MSOP	8	E		$1.76
LTC3200EMS8#TRPBF	MSOP	8	E		$1.76
LTC3200ES6-5	SOT	6	E	$1.98
LTC3200ES6-5#PBF	SOT	8	E	$1.98
LTC3200ES6-5#TR	SOT	6	E	$1.98	$1.66
LTC3200ES6-5#TRM	SOT	6	E	$1.98	$1.68
LTC3200ES6-5#TRMPBF	SOT	6	E	$1.98	$1.68
LTC3200ES6-5#TRPBF	SOT	6	E	$1.98	$1.66

LTC3200 数据手册及相关资料下载

数据手册(英文) : LTC3200/LTC3200-5 - Low Noise, Regulated Charge Pump DC/DC Converters.PDF
可靠性数据 : R415 Reliability Data .PDF