MP2119 2.7-6V, 2A, 1.5MHz Synchronous Step-Down Switching Regulator QFN10

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MP2119 2.7-6V, 2A, 1.5MHz Synchronous Step-Down Switching Regulator QFN10

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MPS Step-Down QFN10 Power Management DC/DC Switching Regulators

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MP2119 2.7-6V, 2A, 1.5MHz Synchronous Step-Down Switching Regulator QFN10

The MPS MP2119 is a Synchronous Step-Down Switching Regulator. It operates from a 2.7 V to 6 V input, is rated for 2 A and switches at 1.5 MHz. It is supplied in a QFN10 package.

The MP2119 is an internally compensated 1.5MHz fixed frequency PWM synchronous step-down regulator.

Key Specifications

Part Number	MP2119
Function	Synchronous Step-Down Switching Regulator
Input Voltage	2.7 V to 6 V
Current Rating	2 A
Switching Frequency	1.5 MHz
Interface	PWM
Package	QFN10
Ordering Codes	MP2119

Features

2A Output Current
Input Operation Range: 2.7V to 6V
All Ceramic Capacitor Design
1.5MHz Fixed Switching Frequency
Adjustable Output from 0.8V to 0.9xVIN
Internal Soft-Start
Frequency Synchronization Input
Power Good Output
Thermal Shutdown
Cycle-by-Cycle Current Limiting

Typical Application Circuit

Applications

µP/ASIC/DSP/FPGA Core and I/O Supplies
Printers and LCD TVs
Network and Telecom Equipment
Point of Load Regulators "MPS" and "The Future of Analog IC Technology" are Trademarks of Monolithic Power Systems, Inc.

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.