Product category:
Power Supply ICs and Controllers
News Release from: Advanced Analogic Technologies | Subject: AAT2505
Edited by the Electronicstalk Editorial
Team on 29 June 2006
Convertor and LDO unite for handset
power supply
By integrating a fast transient 600mA step-down convertor and a 300mA LDO, the AAT2505 forms a complete high-performance power supply solution for GSM handset baseband core and I/O.
The power supply supporting a GSM handset baseband chipset must wake up to full load within microseconds By integrating a fast transient 600mA step-down convertor and a 300mA LDO, AnalogicTech's AAT2505 forms a complete high-performance power supply solution for GSM handset baseband core and I/O
This article was originally published on Electronicstalk on 16 Jun 2004 at 8.00am (UK)
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Additionally, the AAT2505 consumes 50% less PCB area than discrete solutions, and avoids the arduous PCB layout overhead associated with 'mega' power management units.
The latest addition to the AnalogicTech's growing SystemPower family of power management IC products, the AAT2505 offers a highly compact solution that is optimised for popular GSM mobile phone applications.
Low-on-resistance integrated power switches on the AAT2505 extend battery life and handset talk time by supporting efficiency levels up to 98%.
With a wide output voltage range of 0.6V to the input level, the 600mA convertor also maintains a low 27uA no load quiescent current.
Its 1.4MHz switching frequency helps minimise the size and cost of external components.
Turn-on time is 150us (typical).
The LDO delivers up to 300mA of current and features an independent input pin.
Optimised to support the fast line/load transient requirements of a GSM chipset, the LDO features low quiescent current and a power-OK (POK) output to signal when the output voltage is in regulation.
The AAT2505 also adds internal soft-start, overtemperature and current limit protection.
Specified over the -40 to +85C temperature range, the AAT2505 is immediately available in a Pb-free, 12-pin TDFN33 package.
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