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LM26484SQ/NOPB
Power Management Unit
LM26484
www.ti.com SNVS573F –SEPTEMBER 2008–REVISED MARCH 2013
LM26484 Power Management Unit
Checkfor Samples: LM26484
1FEATURES APPLICATIONS Step-Down DC/DC Converter (Buck) • Digital Cores and I/Os (FPGAs, ASICs, DSPs) 3.0–5.5V Input Range • Automotive Infotainment Externally Adjustable VOUT: • Set-Top-Box Bucks1&2: 0.8V–3.5V@ 2A • Cordless Phone Base Station 180° Phase Shift Between Bucks Clocks • Networking Router 2 MHz PWM Switching Frequency • Printers ±1% feedback Voltage Accuracy DESCRIPTION– Automatic Soft Start The LM26484isa multi-function, configurable Power
– Current Overload Protection Management Unit. This device integrates two highly
– PWM/PFM efficiency Modes Available efficient 2.0A Step-Down DC/DC converters, one
LDO Controller,a POR (Power On Reset) circuit, and
• Linear Regulator (LDO) Controllerthermal overload protection circuitry. All regulator
– 3.0V–5.5V Input Range output voltages are externally adjustable. The LDO
– Externally Adjustable VOUT controllerisa low-voltage NMOS voltage regulator.
The LM26484is offeredina5x4x 0.8 mm WQFN-
– ±1.5% Feedback Voltage Accuracy pin package.
– Regulatedto Low VIN- Low VOUT LI-LO (Low
Input Low Output) NFET Operation Inputto the LI-LO Configuration, Can Be
Post Regulated When Supplyis Regulated Buck2 Upto 1000 mA Output Current by Selection External FET
