Product category: Power Supply ICs and Controllers
News Release from: Maxim Integrated Products | Subject: MAX8669A and MAX8569B
Edited by the Electronicstalk Editorial Team on 04 August 2005
Frugal convertors aim for handheld
duties
The MAX8569A and MAX8569B are step-up DC/DC convertors with built-in synchronous rectifiers and up to 95% efficiency.
New from Maxim Integrated Products, the MAX8569A and MAX8569B are step-up DC/DC convertors with built-in synchronous rectifiers and up to 95% efficiency They use only 7uA quiescent supply current to extend battery life in handheld battery-operated applications such as glucose meters and digital cameras
This article was originally published on Electronicstalk on 27 Aug 2002 at 8.00am (UK)
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The devices have a 1.5 to 5.5V input voltage range and can deliver up to 200mA at 3.3V with a 2V input supply.
When in shutdown, the output voltage connects to the input voltage through a low-resistance switch (and not a full drop of a diode), allowing the main battery to be used for backing up the system.
This feature eliminates the need for a separate backup battery, saving board space and system cost.
The MAX8569A has an adjustable 2 to 5.5V output.
The MAX8569B is available in 3.0 and 3.3V fixed output voltages and has a reset output to indicate when the system is in regulation.
The MAX8669A and MAX8569B are offered in space-saving, 6-pin SOT23 and TDFN packages and are specified for the extended temperature range (-40 to +85C).
Prices start at $1.52 (1000-up, FOB USA).
An evaluation kit is available to speed designs.
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