LTC3203/LTC3203-1/LTC3203B/LTC3203B-1 - 500mA Output Current Low Noise Dual Mode Step-Up Charge Pumps
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.
Features
Typical Application  | Applications
Packaging |
Order Information
| Part Number | Package | Temp | Price(1-99) | Price (1k)* |
|---|---|---|---|---|
| LTC3203BEDD-1#PBF | 3x3 DFN-10 | E | $2.86 | $2.00 |
| LTC3203BEDD-1#TRPBF | 3x3 DFN-10 | E | $2.06 | |
| LTC3203BEDD#PBF | 3x3 DFN-10 | E | $2.86 | $2.00 |
| LTC3203BEDD#TRPBF | 3x3 DFN-10 | E | $2.06 | |
| LTC3203EDD-1#PBF | 3x3 DFN-10 | E | $2.86 | $2.00 |
| LTC3203EDD-1#TRPBF | 3x3 DFN-10 | E | $2.06 | |
| LTC3203EDD#PBF | 3x3 DFN-10 | E | $2.86 | $2.00 |
| LTC3203EDD#TRPBF | 3x3 DFN-10 | E | $2.06 |
Demo Boards
| Part Number | Description | Price |
|---|---|---|
| DC863A-A | LTC3203B Demo Board | Regulated Boost Charge Pump, 2.7V ≤ VIN ≤ 4V, Vout = 3.3V @ Up to 500mA | $100.00 |
| DC863A-B | LTC3203-1 Demo Board | Regulated Boost Charge Pump, 2.7V ≤ VIN ≤ 5.5V, Vout = 4.5V or 5V @ Up to 500mA | $100.00 |
| DC863A-C | LTC3203B-1 Demo Board | Regulated Boost Charge Pump, 2.7V ≤ VIN ≤ 5.5V, Vout = 4.5V or 5V @ Up to 500mA | $100.00 |
- R415 - Reliability Data
- June 2006 500mA Output Current Low Noise Dual Mode Charge Pump
- 采用 3mm x 3mm DFN 封装的 500mA 低噪声、高效率双模式充电泵
- LTC3203 Footprints and Symbols
- LTC3203-1 Demo Circuit - 500mA Output Current Low Noise Dual Mode Step-up Charge Pump(2.7-5.5V to 5V @ 500mA)
- LTC3203B Demo Circuit - 500mA Output Current Low Noise Dual Mode Step-up Charge Pump (2.7-5.5V to 3.3V @ 500mA)
