Overview
The TPS62203DBVRG4 is a high-efficiency synchronous step-down DC-DC converter produced by Texas Instruments. This device is part of the TPS6220x family, which is ideally suited for portable systems powered by 1-cell Li-Ion or 3-cell batteries. The converter operates with a fixed frequency pulse width modulation (PWM) at moderate to heavy load currents and switches to power save mode using pulse frequency modulation (PFM) at light load currents. This design ensures high efficiency, typically up to 95%, and excellent line and load regulation.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage (VI) | 2.5 | 6 | V | |
| Output Voltage (VO) | 3.3 | 3.3 | V | |
| Output Current (IO) | 300 | mA | ||
| Switching Frequency | 650 | 1000 | 1500 | kHz |
| Operating Temperature (TA) | -40 | 85 | °C | |
| Junction Temperature (TJ) | -40 | 125 | °C | |
| Package Type | SOT-23 (5-pin) | |||
| Package Size | 2.90 mm × 1.60 mm |
Key Features
- High efficiency up to 95% with low quiescent current.
- Fixed frequency PWM operation at moderate to heavy load currents and PFM operation at light load currents.
- Advanced fast response voltage mode control scheme with input voltage feed forward.
- Small ceramic input and output capacitors can be used.
- Undervoltage lockout to prevent misoperation at low input voltages.
- Dynamic output-voltage positioning for improved efficiency at light loads.
- Compact SOT-23 (5-pin) package for minimal system size.
Applications
- PDAs and Pocket PCs
- Cellular Phones and Smart Phones
- Digital Cameras
- Portable Media Players
- Low Power DSP Supplies
- Portable Equipment
Q & A
- What is the typical efficiency of the TPS62203DBVRG4?
The TPS62203DBVRG4 typically achieves an efficiency of up to 95%.
- What are the input and output voltage ranges for the TPS62203DBVRG4?
The input voltage range is from 2.5 V to 6 V, and the fixed output voltage for the TPS62203 is 3.3 V.
- What is the maximum output current of the TPS62203DBVRG4?
The maximum output current is 300 mA.
- What is the switching frequency of the TPS62203DBVRG4?
The switching frequency ranges from 650 kHz to 1500 kHz.
- What type of package does the TPS62203DBVRG4 come in?
The device is packaged in a 5-pin SOT-23 package.
- What are the key features of the TPS62203DBVRG4's control scheme?
The device uses an advanced fast response voltage mode control scheme with input voltage feed forward, allowing for good line and load regulation and the use of small ceramic capacitors.
- What is the purpose of the undervoltage lockout in the TPS62203DBVRG4?
The undervoltage lockout prevents the device from misoperating at low input voltages by preventing the converter from turning on the switch or rectifier MOSFET under undefined conditions.
- How does the dynamic output-voltage positioning work in the TPS62203DBVRG4?
The dynamic output-voltage positioning adjusts the output voltage to be typically 0.8% above the nominal output voltage at light load currents to improve efficiency.
- What types of capacitors are recommended for use with the TPS62203DBVRG4?
Ceramic input and output capacitors are recommended due to their low ESR values and good performance against voltage transients and spikes.
- What are some typical applications for the TPS62203DBVRG4?
Typical applications include PDAs, cellular phones, digital cameras, portable media players, low power DSP supplies, and other portable equipment.
