AA18375 - Agamem Microelectronics Inc.

Agamem Microelectronics Inc.
PRELIMINARY
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AA18375
SWITCHING REGULATOR CONTROLLER
DESCRIPTION
The AA18375 is a two-channel PWM DC-DC converter control IC that features low-voltage operation. This IC can
obtain the step-up, step-down and inverting voltages with a small number of external components. Because the
IC is compactly packaged, it is best suited for use as a power supply in portable equipment.
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FEATURES
• Wide supply voltage range: 3.6 V to 15 V
• Low current consumption: 1.6 mA typical
• Control in a wide output frequency range is possible (1 KHz to 500 KHz)
• Timer latch, short-circuit protection circuit is built in
• Circuit to prevent malfunction during low input voltage is built in
• Built-in reference voltage (1.28V) output pin
• Dead time period is adjustable over the whole range of duty ratio
• Synchronization operation is possible
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APPLICATIONS
• LCD Displays
• PDAs
• Digital Still Cameras
• Hand-held and portable instruments
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BLOCK DIAGRAM
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4
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©Copyright Agamem Microelectronics Inc.
1
www.agamem.com.tw
2009/06/02
Ver 1.0
AGAMEM MICROELECTRONICS INCORPORATION RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO
ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. AGAMEM DOES NOT ASSUME ANY LIABILITY
ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCTS OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY
ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.