LTC3200 - Low Noise, Regulated Charge Pump DC/DC Converters

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.

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

Typical Application

Applications

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

Packaging

Order Information

Part Number	Package	Temp	Price(1-99)	Price (1k)*
LTC3200EMS8#PBF	MS-8	E	$2.00	$1.70
LTC3200EMS8#TRPBF	MS-8	E		$1.76
LTC3200ES6-5#PBF	SOT-23	E	$1.98
LTC3200ES6-5#TRMPBF	SOT-23	E	$1.98	$1.68
LTC3200ES6-5#TRPBF	SOT-23	E	$1.98	$1.66

Demo Boards

Part Number	Description	Price
DC366A	LTC3200EMS8 Demo Board \| Regulated Charge Pump White LED Driver, 2.7V ≤ VIN ≤ 4.5V, IOUT Drives 6 Parallel LEDs	$75.00