Product category:
Power Supply ICs and Controllers
News Release from: Linear Technology Corp | Subject: LT3021
Edited by the Electronicstalk Editorial
Team on 27 May 2005
How low can a regulator go?
The LT3021 is billed as the power industry's first 500mA VLDO (very low dropout regulator), featuring input voltage capability down to 0.9V and adjustable output voltage down to 0.2V.
New from Linear Technology is the LT3021, billed as the power industry's first 500mA VLDO (very low dropout regulator), featuring input voltage capability down to 0.9V and adjustable output voltage down to 0.2V The LT3021's low input voltage enables operation across the entire voltage range of both single cell alkaline and NiMH batteries (1.4 to 0.9V)
This article was originally published on Electronicstalk on 27 Sep 2005 at 8.00am (UK)
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This low input-voltage capability is also important for emerging applications using a 1.5V main rail that require output voltages from 1.25 to 0.5V to drive low voltage microprocessor and microcontroller cores.
The LT3021 maintains its 160mV dropout voltage up to 500mA of operating current, making it ideal for applications requiring a low input/output voltage differential.
Additionally, it offers micropower operation with only 120uA of quiescent current and less than 3uA in shutdown, maximising run time in handheld applications.
The LT3021 regulator optimises stability and transient response with low ESR, ceramic output capacitors as small as 3.3uF.
Other LT3021 features include 0.05% line regulation and 0.2% load regulation.
Internal protection circuitry includes reverse-battery protection, current limiting, thermal limiting with hysteresis, and reverse-current protection.
The LT3021 regulator is available in a low profile (0.75mm) 16-lead DFN 5 x 5mm package with exposed pad, and an 8-lead SOIC package, both offering compact solution footprints.
Both LT3021EDH (16-lead DFN) and the LT3021ES8 (SOIC-8) are available from stock.
1000-piece pricing starts at $2.25 each. Request a free brochure from Linear Technology Corp ...
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