News Release

- New Product Information -

AKM has developed a new motor driver. It makes compact stepping motors quieter

Product Name
Product Category:
Power Management > Motor Driver
2ch H-Bridge Small Motor Driver
Motor Drive Voltage: 2 to 9V, Control Voltage: 2.7 to 5.5V, 1.1A
Interchangeable lens for DSLRs, (digital single-lens reflex), high-end compact cameras, small stepping motors, home security cameras, communication robots


To solve the problem of unwanted sound from a zooming operation within a video recording, Asahi Kasei Microdevices Corporation, (AKM), has developed and released a 9V 2ch H-bridge motor driver.  The new AP1019AEN is quieter than competitive products by improving linearity during PWM operation with faster switching.  Thus, rotation of the compact stepping motor becomes smoother with less noise.  The AP1019AEN is ideal for applications such as a digital single-lens reflex/mirrorless cameras equipped with a lens that adjusts the zoom and aperture while shooting video, a home security camera that can pan, tilt, and zoom while talking, or a communication robot with a driven joint.


● Motor driver sound is reduced from improving the linearity during PWM control

Drive frequency ranges to 1 MHz with the increase of switching speed, improvements include high linearity during PWM control, and reduced unevenness from rotation.  Therefore, smooth rotation can be achieved even with higher motor rotation speed, but with less motor driving sound.

● Protection Function

Built-in functions include Thermal Shutdown, (TSD), shoot-through current prevention, and Undervoltage Lockout (UVLO).

● Small Package

The AP1019AEN is housed in a 16-pin WLCSP, (1.96 × 1.96mm), package.

Improved linearity during PWM Control

Main Specification

2ch H-Bridge Small Motor Driver
Product Name AP1019AEC AP1014AEC
Motor Drive Voltage2.0 to 9.0V2.0 to 7.0V
Control Power Voltage2.7 to 5.5V← (same as left)
Maximum Output Current1.1A (DC), 2.0A (Peak) ← (same as left)
PWM Pulse Input Frequency1MHz (Max.)200kHz (Max.)
H-Bridge On-ResistanceRON (TOP+BOT) = 0.35Ω @Ta=25°C← (same as left)
Undervoltage Lockout Circuit at Control Power Supply (UVLO)2.2V (Typ.)← (same as left)
Thermal Shutdown (TSD) 175°C (Typ.)← (same as left)
Operation Temperature -30 to 85°C← (same as left)
Package16-pin WLCSP (1.96 x 1.96mm)← (same as left))
* Information on this page is current on the date of press release.
* AKM is trademark of Asahi Kasei Microdevices Corporation in Japan, Europe and the United States.
* Appellations, company names and product names on this page are trademarks or registered trademarks of respective companies.

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