MP28600GTF-Z 0.7-5.25V Synchronous Boost Converter SOT563

MP28600GTF-Z 0.7-5.25V Synchronous Boost Converter SOT563

The MP28600 is a synchronous boost converter with an ultra-low quiescent current (IQ).

Key Specifications

Features

• 0.7V to 5.25V Start-Up Voltage (VST) Range
• 0.1V to 5.25V Operating Input Voltage (VIN) Range
• 2.5V to 5.25V Output Voltage (VOUT) Range
• Pulse-Skip Mode (PSM)
• 600nA Quiescent Current (IQ)
• 1A Fixed Switching Current Limit
• Up to 88% Efficiency at a 10µA Load with Fixed-VOUT Versions
• Automatic Switching between Boost Mode and Down Mode
• True Disconnection during Shutdown
• 150°C Thermal Shutdown Protection

Typical Application Circuit

Applications

• Memory LCD Bias
• Wearable Applications
• Portable Products
• Low-Power Wireless Applications

Design Notes

• Size the inductor for the ripple current at the actual switching frequency, typically 30% of the DC load — not for the DC rating alone.
• The hot loop from input capacitor through the switch to ground sets conducted EMI. Keep that copper area as small as the layout allows.
• Output ripple is set by the capacitor ESR and its DC-bias derating; a 10 µF ceramic often behaves like 4 µF at the rated output voltage.
• Route the feedback divider from the output capacitor terminals, away from the switch node.

Common Questions