LM26484

LM26484 www.ti.com SNVS573F – SEPTEMBER 2008 – REVISED MARCH 2013 LM26484 Power Management Unit Check for Samples: LM26484 FEATURES 1 2 Step-Down DC/DC Converter (Buck) – 3.0–5.5V Input Range – Externally Adjustable VOUT: – Bucks 1 & 2: 0.8V–3.5V @ 2A – 180° Phase Shift Between Bucks Clocks – 2 MHz PWM Switching Frequency – ±1% feedback Voltage Accuracy – Automatic Soft Start – Current Overload Protection – PWM/PFM efficiency Modes Available Linear Regulator (LDO) Controller – 3.0V–5.5V Input Range – Externally Adjustable VOUT – ±1.5% Feedback Voltage Accuracy – Regulated to Low VIN - Low VOUT LI-LO (Low Input Low Output) NFET Operation – Input to the LI-LO Configuration, Can Be Post Regulated When Supply is Regulated by Buck2 – Up to 1000 mA Output Current by Selection of External FET APPLICATIONS Digital Cores and I/Os (FPGAs, ASICs, DSPs) Automotive Infotainment Set-Top-Box Cordless Phone Base Station Networking Router Printers DESCRIPTION The LM26484 is a multi-function, configurable Power Management Unit. This device integrates two highly efficient 2.0A Step-Down DC/DC converters, one LDO Controller, a POR (Power On Reset) circuit, and thermal overload protection circuitry. All regulator output voltages are externally adjustable. The LDO controller is a low-voltage NMOS voltage regulator. The LM26484 is offered in a 5 x 4 x 0.8 mm WQFN24 pin package. 1 Please be aware that an important notice concerning availability, standard warranty, and use in cri...