Overview
The CAT3200HU2-GT3 from onsemi is a low noise, regulated charge pump DC-DC converter designed for efficient voltage boosting in various applications. This device operates as a switched capacitor boost converter, providing a fixed regulated 5 V output or an adjustable output voltage using external resistors. It is particularly suited for battery-powered devices due to its high efficiency and low quiescent current. The CAT3200HU2-GT3 features a constant frequency of 2 MHz, allowing the use of small 1 µF ceramic capacitors, and supports maximum output loads of up to 100 mA over a wide range of input supply voltages.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage | 2.7 | - | 4.5 | V |
| Switching Frequency | 1.3 | 2.0 | 2.6 | MHz |
| Output Voltage (Fixed) | 4.8 | 5.0 | 5.2 | V |
| Output Current | - | - | 100 | mA |
| Line Regulation | - | 6 | - | mV |
| Load Regulation | - | 20 | - | mV |
| Output Ripple Voltage | 25 | 30 | 45 | mVp-p |
| Efficiency | 77 | 81 | 85 | % |
| Quiescent Current | - | 1.7 | - | mA |
| Shutdown Current | - | - | 1 | µA |
| Operating Temperature Range | -40 | - | 85 | °C |
| Package | - | - | - | UDFN-8 2x2 mm |
Key Features
- Constant high frequency (2 MHz) operation
- Up to 100 mA output current
- Regulated output voltage (5 V fixed or adjustable)
- Low quiescent current (1.7 mA typical)
- Soft start, slew rate control
- Reverse leakage protection
- Thermal overload shutdown protection
- Low value external capacitors (1 µF)
- Foldback current overload protection
- Shutdown current less than 1 µA
- Pb-free, halogen-free/BFR-free, and RoHS compliant
Applications
- 3 V to 5 V boost conversion
- 2.5 V to 3.3 V boost conversion
- White LED driver
- Handheld portable devices
Q & A
- What is the input voltage range for the CAT3200HU2-GT3?
The input voltage range is from 2.7 V to 4.5 V.
- What is the maximum output current of the CAT3200HU2-GT3?
The maximum output current is up to 100 mA.
- Can the output voltage of the CAT3200HU2-GT3 be adjusted?
- What is the switching frequency of the CAT3200HU2-GT3?
The switching frequency is 2 MHz.
- What type of protection does the CAT3200HU2-GT3 have against overloads?
The device has foldback current limiting and thermal overload detection.
- How does the shutdown mode work on the CAT3200HU2-GT3?
In shutdown mode, all circuitry is turned off, and the device draws only leakage current from the VIN supply. The SHDN pin is a CMOS input that must be driven with a valid logic level to enter or exit shutdown mode.
- What is the package type and size of the CAT3200HU2-GT3?
The device is packaged in an 8-pad UDFN package with dimensions of 2 mm x 2 mm.
- Is the CAT3200HU2-GT3 RoHS compliant?
- What are some typical applications for the CAT3200HU2-GT3?
- How does the efficiency of the CAT3200HU2-GT3 vary with output current?
