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AN812
| Title |
Title
Paralleling the TC1121 to Reduce Output Resistance for Driving Higher Load Currents (TC1121)
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|---|---|
| Name |
Name
AN812
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| Date |
Date
06/24/2015
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| Application Categories |
Application Categories
Medical /
Homecare Iontophresis
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| Product Categories |
Product Categories
Power Management ICs /
Charge Pump DC-to-DC Converters
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| Description |
Description
Microchip Technology’s TC1121 is a charge pump voltage converter specified to have a 100mA output current capability. The TC1121 has the benefits of selecting different internal charge pump switching frequencies (10KHz or 200KHz), driving the charge pump from an external clock, and a low power shutdown mode. An even greater benefit in certain applications where higher load currents are required (such as disk drive pre-amplifiers) is the ability to connect multiple TC1121s in parallel to drive loads greater than 100mA. The data in this application note compares measurements taken on a single TC1121 and two TC1121s connected in parallel. All measurements were made at ambient temperature (TA = +25°C).
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