MP2359 1.2A, 24V, 1.4MHz Step-Down Converter in a TSOT23-6

The MP2359 is a monolithic step-down switch mode converter with a built-in power MOSFET.
It achieves 1.2A peak output current over a wide input supply range with excellent load and
line regulation. Current mode operation provides fast transient response and eases loop
stabilization. Fault condition protection includes cycle-by-cycle current limiting and thermal
shutdown. The MP2359 requires a minimum number of readily available standard external
components. The MP2359 is available in TSOT23-6 and SOT23-6 packages.

FEATURES
• 1.2A Peak Output Current
• 0.35Ω Internal Power MOSFET Switch
• Stable with Low ESR Output Ceramic
Capacitors
• Up to 92% Efficiency
• 0.1μA Shutdown Mode
• Fixed 1.4MHz Frequency
• Thermal Shutdown
• Cycle-by-Cycle Over Current Protection
• Wide 4.5V to 24V Operating Input Range
• Output Adjustable from 0.81V to 15V
• Available in TSOT23-6 and SOT23-6
Packages
APPLICATIONS
• Distributed Power Systems
• Battery Charger
• Pre-Regulator for Linear Regulators
• WLED Drivers

Recommended Operating Conditions (3)

Supply Voltage VIN ...........................4.5V to 24V
Output Voltage VOUT.......................0.81V to 15V
Ambient Temperature ................ -40°C to +85°C
Max input current into the EN pin............. 300μA

(3) The device function is not guaranteed outside of the recommended operating conditions.