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High-Efficiency, Single-Inductor, Buck-Boost Converter with 4.2A Switches
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The MP28164 is a high-efficiency, low quiescent current buck-boost converter, which operates from input voltage above, equal to, or below the output voltage. The device provides a compact solution for products powered by a single-cell Lithium-ion or multi-cell alkaline battery, where the output voltage is within the battery voltage range.
The MP28164 uses current mode control with a fixed PWM frequency for optimal stability and transient response. The fixed 2MHz switching frequency and integrated low RDS(ON) MOSFETs minimize the solution footprint while maintaining high efficiency.
To ensure the longest battery life, the MP28164 has an optional pulse-skipping mode that reduces the switching frequency under light-load conditions. For other low-noise applications, where pulse-skipping mode may cause interference, a high logic input on the MODE pin guarantees fixed frequency PWM operation under all load conditions.
The MP28164 operates with input voltage from 1.2V to 5.5V to provide adjustable output voltage (1.5V to 5V). With an input from 2.5V to 5.5V, it can supply a maximum 2A current to the load at a 3.3V output voltage. The MP28164 is available in a small QFN-11 (2mmx3mm) package.
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Features & Benefits
- 1.8V Minimum Start-Up Input Voltage
- 1.2V to 5.5V Input Work Range
- 1.5V to 5V Output Range
- 4.2A Switching Current Limit
- 3.3V/2A Load Capability from a 2.5V to 5.5V Input Supply
- 2MHz Fixed or External Synchronous Switching Frequency
- Selectable PSM/PWM Mode
- Typical 25μA Quiescent Current
- High Efficiency Up to 95%
- Load Disconnect during Shutdown
- Internal Soft Start and Compensation
- Power Good Indicator
- Hiccup Mode for Short-Circuit Protection (SCP)
- Over-Temperature Protection (OTP)
- Available in a Small QFN-11 (2mmx3mm) Package
The EV28164-D-00A Evaluation Board is designed to demonstrate the capabilities of MPS’ MP28164.
The MP28164 is a highly-efficient, low quiescent current Buck-Boost converter, which operates from input voltage above, below and equal to the output voltage. The device provides power solution for products powered by a one-cell Lithium-Ion or multi-cell alkaline battery applications where the output voltage is within battery voltage range.
The MP28164 operates with input voltage from 1.2V to 5.5V to provide adjustable output voltage (1.5V to 5V), and is available in QFN10-3x3mm package.