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LM26480SQ-BF Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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LM26480SQ-BF Datasheet(HTML) 1 Page - National Semiconductor (TI) |
1 / 30 page LM26480 March 29, 2010 Externally Programmable Dual High-Current Step-Down DC/DC and Dual Linear Regulators General Description The LM26480 is a multi-functional Power Management Unit, optimized for low-power digital applications. This device inte- grates two highly efficient 1.5A step-down DC/DC converters and two 300 mA linear regulators. The LM26480 is offered in a tiny 4 x 4 x 0.8mm LLP-24 pin package. Key Specifications Step-Down DC/DC Converter (Buck) ■ 1.5A output current ■ V OUT from: — Buck1 : 0.8V–2.0V @ 1.5A — Buck2 : 1.0V–3.3V @ 1.5A ■ Up to 96% efficiency ■ ±3% FB voltage accuracy ■ 2 MHz PWM switching frequency ■ PWM - PFM automatic mode change under low loads ■ Automatic soft start Linear Regulators (LDO) ■ V OUT of 1.0V–3.5V ■ ±3% FB voltage accuracy ■ 300 mA output current ■ 25 mV (typ) dropout Features ■ Compatible with advanced applications processors and FPGAs ■ 2 LDOs for powering Internal processor functions and I/Os ■ Precision internal reference ■ Thermal overload protection ■ Current overload protection ■ 24-lead 4 × 4 × 0.8mm LLP package ■ External Power-On-Reset function for Buck1 and Buck2 ■ Undervoltage lock-out detector to monitor input supply voltage Applications ■ Core digital power ■ Applications processors ■ Peripheral I/O power Typical Application Circuit 30040401 © 2010 National Semiconductor Corporation 300404 www.national.com |
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