Description: The CAT3200 and CAT3200-5 are switched capacitor boost converters with adjustable output voltage and low noise characteristics. The output voltage of the CAT3200-5 is fixed at 5V, while the CAT3200 allows for adjustment via an external resistor. They operate at a fixed frequency of 2MHz, enabling the use of small 1 µF ceramic capacitors. The devices support a wide input supply voltage range of 2.7V to 4.5V and can deliver a maximum output load of 100mA, making them ideal for battery-powered electronic devices. A shutdown control input allows the devices to enter power-down mode, reducing supply current to 1 µA or less. In the event of short circuit or overload conditions, the devices feature foldback current limit protection and thermal protection. Additionally, they include a soft-start and slew rate control circuit to limit inrush current during power-up.
Technical characteristics include:
1. Fixed frequency of 2MHz.
2. Output current capability of 100mA.
3. Output voltage: CAT3200-5 fixed at 5V, CAT3200 has adjustable output voltage.
4. Low quiescent current of 1.7mA (typical value).
5. Operational input voltage as low as 2.7V.
6. Soft-start and slew rate control.
7. Low external capacitor requirement of 1 µF.
8. Shutdown current of less than 1 µA.
9. Foldback current limit protection and thermal protection.
10. The CAT3200-5 is available in a small 6-pin SOT23 package (1mm thickness), while the CAT3200 is offered in an MSOP-8 and a small TDFN package (0.8mm thickness).
Typical application circuits for the CAT3200 and CAT3200-5 are illustrated, demonstrating their integration into various electronic designs.
The CAT3200 and CAT3200-5 are versatile components that serve as switched capacitor boost converters, effectively increasing voltage levels while maintaining low noise operation. The adjustable output feature of the CAT3200 allows designers to tailor the output voltage to specific application needs, making it suitable for a range of electronic devices, especially those powered by batteries.
The fixed frequency of 2MHz is particularly advantageous in applications requiring compact designs, as it permits the use of smaller capacitors, thus reducing the overall footprint of the circuit. The ability to operate within a wide input voltage range enhances flexibility, enabling the devices to be utilized in various power supply scenarios without significant redesign.
The inclusion of shutdown functionality is critical for power-sensitive applications, allowing the devices to conserve energy when not in use. The low quiescent current further supports this goal, ensuring minimal power consumption during idle periods.
Protection features such as foldback current limiting and thermal protection are essential for safeguarding the devices and the overall system, preventing damage under fault conditions. The soft-start and slew rate control functionalities mitigate inrush current, protecting downstream components during power-up and ensuring stable operation.
The compact packaging options available for both devices facilitate integration into space-constrained designs, making them suitable for modern electronic applications where size and efficiency are paramount. The typical application circuits provided serve as valuable references for engineers seeking to implement these devices in their designs, showcasing the versatility and reliability of the CAT3200 and CAT3200-5 in various contexts. CAT3200 and CAT3200-5 is switched capacitor boost converters, they can adjustable output voltage and low noise. CAT3200-5 output voltage is fixed to 5V. CAT3200 can use an exte rnal resistor so that the output voltage is adjustable. Their roar of a fixed frequency of 2MHz charge pump allows the use of small 1 F ceramic capacitors, wide input supply voltage range (2.7 ~ 4.5V) can support up to 100mA maximum output load that allows the device ideal for battery-powered electronic devices in each. Their shutdown control input allows the device to enter power-down mode, allowing the supply current to 1 A or less.
In short circuit or overload conditions, the device will be foldback current limit protection and thermal protection. In addition, they soft-start, slew rate control circuit limits the inrush current at power-up. Technical characteristics (1) CAT3200 and the CAT3200-5 Main technical characteristics and CAT3200-5 CAT3200 follows.
O fixed frequency of 2MHz. 100mA output current. output voltage (CAT3200-5 fixed 5V, CATB200 adjustable output voltage). low quiescent current (1.7mA typical value). input voltage as low as 2.7V can still work. soft-start, slope control. low external capacitor (1 F). Shutdown current is less than 1 A. a foldback current limit protection and thermal protection. ?CAT3200-5 a small (thickness 1mm) 6-pin SOT23 package; CAT3200 uses MSOP-8 and small (thickness 0.8mm) TDFN package. (2) Typical Applications Typical application circuit CAT3200 and CAT3200-5 shown. View of a typical application circuit CAT3200 and the CAT3200-5
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