LTC3203
LTC3203-1
LTC3203B
LTC3203B-1
Info: : PRODUCTION
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LTC3203
LTC3203-1
LTC3203B
LTC3203B-1

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

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 8
1ku List Price Starting From $2.67
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
  • VIN Range: 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
Additional Details
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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 VIN and 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.

Applications

  • High Current LED Backlight Supply for Cellphones/PDAs
  • Cellphone Camera Light Supply
  • General Purpose 3.3V or Li-Ion to 5V Supply
  • USB ON THE GO(OTG) Devices
Part Models 8
1ku List Price Starting From $2.67

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC3203BEDD#PBF
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LTC3203BEDD#TRPBF
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LTC3203BEDD-1#PBF
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LTC3203BEDD-1#TRPBF
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LTC3203EDD#PBF
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LTC3203EDD#TRPBF
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LTC3203EDD-1#PBF
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LTC3203EDD-1#TRPBF
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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 3

reference details image

DC863A-B

LTC3203-1 Demo Board | Regulated Boost Charge Pump, 2.7V ≤ VIN ≤ 5.5V, VOUT = 4.5V or 5V @ Up to 500mA

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DC863A-B

LTC3203-1 Demo Board | Regulated Boost Charge Pump, 2.7V ≤ VIN ≤ 5.5V, VOUT = 4.5V or 5V @ Up to 500mA

LTC3203-1 Demo Board | Regulated Boost Charge Pump, 2.7V ≤ VIN ≤ 5.5V, VOUT = 4.5V or 5V @ Up to 500mA

Product Detail

Demonstration circuit 863 is a high efficiency regulated boost charge pump converter that exercises the 500mA low noise LTC3203 in the 3mm x 3mm DFN package. It comes with three assembly versions, DC863A-A (3.3V output), DC863A-B (4.5V or 5V output) and DC863A-C (4.5V or 5V output), featuring the LTC3203B, LTC3203-1, and LTC3203B-1 respectively. The input voltage range is from 2.7V to 5.5V. The output current can reach up to 500mA with an input voltage above 2.9V for a 4.5V output, above 3.1V for a 5V output and over the full input range for a 3.3V output. By choosing the proper operation modes, the DC863A circuit optimizes conversion efficiencies and maintains the maximum output current at each output voltage.


Additionally, DC863A-B features Automatic Burst Mode operation at light load to achieve low supply current, whereas DC863A-A and DC863A-C operate in constant frequency mode to achieve low noise at the input. The built-in soft-start prevents excessive inrush current at start-up, and short-circuit current limit/thermal protection help the part survive a continuous short-circuit.

reference details image

DC863A-A

LTC3203B Demo Board | Regulated Boost Charge Pump, 2.7V ≤ VIN ≤ 4V, VOUT = 3.3V @ Up to 500mA

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DC863A-A

LTC3203B Demo Board | Regulated Boost Charge Pump, 2.7V ≤ VIN ≤ 4V, VOUT = 3.3V @ Up to 500mA

LTC3203B Demo Board | Regulated Boost Charge Pump, 2.7V ≤ VIN ≤ 4V, VOUT = 3.3V @ Up to 500mA

Product Detail

Demonstration circuit 863 is a high efficiency regulated boost charge pump converter that exercises the 500mA low noise LTC3203 in the 3mm x 3mm DFN package. It comes with three assembly versions, DC863A-A (3.3V output), DC863A-B (4.5V or 5V output) and DC863A-C (4.5V or 5V output), featuring the LTC3203B, LTC3203-1, and LTC3203B-1 respectively. The input voltage range is from 2.7V to 5.5V. The output current can reach up to 500mA with an input voltage above 2.9V for a 4.5V output, above 3.1V for a 5V output and over the full input range for a 3.3V output. By choosing the proper operation modes, the DC863A circuit optimizes conversion efficiencies and maintains the maximum output current at each output voltage.


Additionally, DC863A-B features Automatic Burst Mode operation at light load to achieve low supply current, whereas DC863A-A and DC863A-C operate in constant frequency mode to achieve low noise at the input. The built-in soft-start prevents excessive inrush current at start-up, and short-circuit current limit/thermal protection help the part survive a continuous short-circuit.

reference details image

DC863A-C

LTC3203B-1 Demo Board | Regulated Boost Charge Pump, 2.7V ≤ VIN ≤ 5.5V, VOUT = 4.5V or 5V @ Up to 500mA

zoom

DC863A-C

LTC3203B-1 Demo Board | Regulated Boost Charge Pump, 2.7V ≤ VIN ≤ 5.5V, VOUT = 4.5V or 5V @ Up to 500mA

LTC3203B-1 Demo Board | Regulated Boost Charge Pump, 2.7V ≤ VIN ≤ 5.5V, VOUT = 4.5V or 5V @ Up to 500mA

Product Detail

Demonstration circuit 863 is a high efficiency regulated boost charge pump converter that exercises the 500mA low noise LTC3203 in the 3mm x 3mm DFN package. It comes with three assembly versions, DC863A-A (3.3V output), DC863A-B (4.5V or 5V output) and DC863A-C (4.5V or 5V output), featuring the LTC3203B, LTC3203-1, and LTC3203B-1 respectively. The input voltage range is from 2.7V to 5.5V. The output current can reach up to 500mA with an input voltage above 2.9V for a 4.5V output, above 3.1V for a 5V output and over the full input range for a 3.3V output. By choosing the proper operation modes, the DC863A circuit optimizes conversion efficiencies and maintains the maximum output current at each output voltage.


Additionally, DC863A-B features Automatic Burst Mode operation at light load to achieve low supply current, whereas DC863A-A and DC863A-C operate in constant frequency mode to achieve low noise at the input. The built-in soft-start prevents excessive inrush current at start-up, and short-circuit current limit/thermal protection help the part survive a continuous short-circuit.

Tools & Simulations

Tools & Simulations 1

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

Reference Designs

Reference Designs 1

DK-DEV-3CLS200N Dev Kit

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altera-cyclone-iii-ls-fpga-development-kit

altera-cyclone-iii-ls-fpga-development-kit

Circuits from the lab

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Features and Benefits

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