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1. Description
The TPS61230DRCT device family is a high efficiency synchronous step up converter with compact solution size. It is optimized for products powered by a one- cell Li-Ion battery, or a regulated power rail of 3.3 V. The IC integrates a 5-A switch and is capable of delivering output currents up to 2.1 A at a 5-V output with a 3.3-V input supply. The device is based on a quasi-constant on-time valley current mode control scheme. The typical operating frequency is 2 MHz, which allows the use of small inductors and capacitors to achieve a small solution size. The TPS61230 and TPS61231 provide an adjustable output voltage via an external resistor divider, and the TPS61232 provides a fixed output voltage of 5 V. During light loads, the TPS6123x automatically enters power save mode for maximum efficiency at lowest quiescent currents. In shutdown, the load is completely disconnected from the input, and the input current consumption is reduced to 1.5 µA typical. The device integrates a precise low power EN comparator. The EN threshold as well as the hysteresis of the enable comparator are adjustable with external resistors and support application specific system power up and down requirements. Other features like output over voltage protection，thermal shutdown protection, and a power good output are built-in. The devices are available in a 3 mm x 3 mm x 0.9 mm VSON package.
2. Features
1. Input Voltage Range: 2.3 V to 5.5 V
2. Output Voltage Range: 2.5 V to 5.5 V
3. Up to 96% Efficiency Synchronous Boost Converter
4. 3.3-V to 5-V Power Conversion with 2.1-A Output Current
5. Input Supply Voltage Supervisor with Adjustable Threshold/Hysteresis
6. Power Save Mode for Light Load Efficiency
7. Load Disconnect During Shutdown
8. Output Over Voltage Protection
9. Programmable Soft Start
10. Power Good Output
11. 2-MHz Switching Frequency
12. Output Capacitor Discharge (TPS61231)
13. 3 mm x 3 mm x 0.9 mm VSON Package
3. Applications
1. Low Voltage Li-Ion Battery Powered Products
2. USB Power Supply
3. Tablet PCs
4. Power Banks, Battery Backup Units
5. Industrial Metering Equipments
4. Pin Configuration
5. Pin Functions
6. Application Information
These devices are designed to operate over an input voltage range of 2.3 V to 5.5 V, with The maximum output current is 2.1 A. The device operates in PWM mode for moderate to heavy load conditions and is Power saving mode at light load currents. In PWM mode, TPS6123x converters operate at nominal The switching frequency is 2 MHz, providing controlled frequency variation over the input voltage range. as The load current decreases, the converter enters a power saving mode, reducing the switching frequency and Minimize IC quiescent current for high efficiency over the entire load current range. WEBENCH software uses an iterative design procedure and accesses a comprehensive component database to generate designs under the following conditions.
