LTC3203LTC3203-1LTC3203BLTC3203B-1 Series

500mA Output Current Low Noise Dual Mode Step-Up Charge Pumps

Catalog

500mA Output Current Low Noise Dual Mode Step-Up Charge Pumps

Part	Output Configuration	Operating Temperature [Max]	Operating Temperature [Min]	Output Type	Mounting Type	Package / Case	Frequency - Switching	Number of Outputs	Voltage - Output (Min/Fixed)	Voltage - Input (Min) [Min]	Supplier Device Package	Current - Output	Function	Voltage - Input (Max) [Max]	Voltage - Output (Max)	Voltage - Output (Min/Fixed)
Analog Devices LTC3203EDD#TRPBF	Positive	85 °C	-40 °C	Adjustable	Surface Mount	10-WFDFN Exposed Pad	1 MHz 900 kHz	1	0.91 V	2.7 V	10-DFN (3x3)	500 mA	Step-Up	5.5 V	5 V
Analog Devices LTC3203BEDD#PBF	Positive	85 °C	-40 °C	Adjustable	Surface Mount	10-WFDFN Exposed Pad	1 MHz 900 kHz	1	0.91 V	2.7 V	10-DFN (3x3)	500 mA	Step-Up	5.5 V	5 V
Analog Devices LTC3203EDD-1#TRPBF	Positive	85 °C	-40 °C	Programmable	Surface Mount	10-WFDFN Exposed Pad	1 MHz 900 kHz	1	4.5 V	2.7 V	10-DFN (3x3)	500 mA	Step-Up	5.5 V		5 V
Analog Devices LTC3203BEDD-1#PBF	Positive	85 °C	-40 °C	Programmable	Surface Mount	10-WFDFN Exposed Pad	1 MHz 900 kHz	1	4.5 V	2.7 V	10-DFN (3x3)	500 mA	Step-Up	5.5 V		5 V
Analog Devices LTC3203EDD#PBF	Positive	85 °C	-40 °C	Adjustable	Surface Mount	10-WFDFN Exposed Pad	1 MHz 900 kHz	1	0.91 V	2.7 V	10-DFN (3x3)	500 mA	Step-Up	5.5 V	5 V

Catalog

500mA Output Current Low Noise Dual Mode Step-Up Charge Pumps

Key Features

• Selectable Dual Mode Operation: 1:1.5 or 1:2

• High Output Current: Up to 500mA

• Low Noise Constant Frequency (1MHz/0.9MHz) Operation

• VINRange: 2.7V to 5.5V

• Adjustable Output Voltage (LTC3203/LTC3203B)

• User Selectable Fixed Output Voltages: 4.5V or 5V (LTC3203-1 and LTC3203B-1)

• Automatic Burst Mode®Operation with IQ~ 120µA (LTC3203/LTC3203-1)

• Constant Freqency Operation at All Loads (LTC3203B/LTC3203B-1)

• Soft-Start Limits Inrush Current at Turn-On

• Short-Circuit/Thermal Protection

• Shutdown Disconnects Load from Input

• Shutdown Current: < 1µA

• Available in a 10-pin (3mm × 3mm) DFN Package

Description

The LTC3203/LTC3203-1/LTC3203B/LTC3203B-1 are low noise, high efficiency charge pump DC/DC converters capable of driving loads up to 500mA from a 2.7V to 5.5V input. Low external parts count (two flying capacitors and bypass capacitors at VINand VOUT) make the LTC3203 family ideally suited for small, battery-powered applications.Built-in soft-start circuitry prevents excessive inrush current during start-up. High switching frequency enables the use of small external capacitors. The LTC3203/LTC3203-1 feature Burst Mode operation at light load to achieve high efficiency whereas the LTC3203B/LTC3203B-1 operate at constant frequency to achieve lowest noise operation.The LTC3203-1/LTC3203B-1 have a user selectable fixed output voltage of 4.5V or 5V to power LEDs or logic circuits. The FB pin of the LTC3203/LTC3203B can be used to program the desired output voltage. The parts are short-circuit and over temperature protected and are available in a low profile (3mm × 3mm) DFN package.ApplicationsHigh Current LED Backlight Supply for Cellphones/PDAsCellphone Camera Light SupplyGeneral Purpose 3.3V or Li-Ion to 5V SupplyUSB ON THE GO(OTG) Devices