MP1909 4.5-12V, 2A Half-Bridge Gate Driver in SOT583 Package

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MP1909 4.5-12V, 2A Half-Bridge Gate Driver in SOT583 Package

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pMPS MP1909 — Half-Bridge Gate Driver in SOT583 Package, 4.5-12V input, 2 A output, SOT583./p

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MPS SOT583 Power Management Power Protection & Switches

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MP1909 4.5-12V, 2A Half-Bridge Gate Driver in SOT583 Package

The MPS MP1909 is a Half-Bridge Gate Driver in SOT583 Package. It operates from a 4.5 V to 12 V input, is rated for 2 A and switches at 2.2 MHz. It is supplied in a SOT583 package.

The MP1909 is a high-frequency, 30V, half- bridge, N-channel power MOSFET driver.

Key Specifications

Part Number	MP1909
Function	Half-Bridge Gate Driver in SOT583 Package
Input Voltage	4.5 V to 12 V
Current Rating	2 A
Switching Frequency	2.2 MHz
Interface	PWM
Package	SOT583
Ordering Codes	MP1909

Features

Drives N-Channel MOSFET Half-Bridge
Up to 50V VBST Voltage
4.5V to 12V Gate Drive Voltage
On-Chip Bootstrap Diode
Up to 2.2MHz Switching Frequency
One PWM Signal Generates Both Drives
Low Quiescent Current
100% Duty Support
UVLO for High-Side and Low-Side Gate Drives
Available in an 8-Pin SOT583 (1.6mmx2.1mm) Package

Typical Application Circuit

Applications

Electronic Cigarettes
Wireless Charging
Avionics DC/DC Converters

Design Notes

The current-limit threshold must stay inside the SOA of the pass device at the applied voltage, including startup inrush.
Hot-swap inrush control is set by the slew rate on the gate or the dV/dt capacitor — too fast trips the upstream supply.
Reverse-current blocking behaviour differs between ideal-diode and load-switch topologies; pick the one that matches the fault you are protecting against.
Route the fault flag to a pin the firmware actually polls; a latch-off protection with no report looks like a dead board in the field.