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LTC3200

Part Number	LTC3200
Manufacturer	Linear Technology
Description	Regulated Charge Pump DC/DC Converters
Published	Jan 28, 2007
Detailed Description	www.DataSheet4U.com LTC3200/LTC3200-5 Low Noise, Regulated Charge Pump DC/DC Converters FEATURES s s s DESCRIPTIO s s...
Datasheet	LTC3200 PDF File

Overview

www.
DataSheet4U.
com LTC3200/LTC3200-5 Low Noise, Regulated Charge Pump DC/DC Converters FEATURES s s s DESCRIPTIO s s s s s s U APPLICATIO S s s s s s Low Noise Constant Frequency Operation Output Current: 100mA Available in 8-Pin MSOP (LTC3200) and Low Profile (1mm) 6-Pin ThinSOTTM (LTC3200-5) Packages 2MHz Switching Frequency Fixed 5V ± 4% Output (LTC3200-5) or ADJ VIN Range: 2.
7V to 4.
5V Automatic Soft-Start Reduces Inrush Current No Inductors ICC <1µA in Shutdown 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 both output and input ripple.
The LTC3200/LTC3200-5 have thermal shutdown capability and can survive a continuous shortcircuit from VOUT to GND.
Built-in soft-start circuitry prevents excessive inrush current 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 ThinSOT.
, LTC and LT are registered trademarks of Linear Technology Corporation.
ThinSOT is a trademark of Linear Technology Corporation.
White LED Backlighting Li-Ion Battery Backup Supplies Local 3V to 5V Conversion Smart Card Readers PCMCIA Local 5V Supplies TYPICAL APPLICATIO Output Ripple Voltage vs Load Current Regulated 5V Output from a 2.
7V to 4.
5V Input 1µF OUTPUT RIPPLE (mVP-P) 40 VIN = 3V CFLY = 1µF TA = 25°C 30 COUT = 1µF 20 COUT = 2.
2µF 10 4 6 VIN 2.
7V TO 4.
5V 1µF 5 2 3 C+ C– LTC3200-5 VIN GND SHDN VOUT 1 1µF VOUT = 5V ±4% IOUT UP ...

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