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FAN4603 Dataheets PDF



Part Number FAN4603
Manufacturers Fairchild Semiconductor
Logo Fairchild Semiconductor
Description 500mA Synchronous Buck Regulator
Datasheet FAN4603 DatasheetFAN4603 Datasheet (PDF)

FAN4603 — 500mA, Fully Integrated Buck Power Supply Module www.DataSheet4U.com April 2010 FAN4603 500mA, Fully Integrated, Buck Power Supply Module Features ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ Solder and Play DC/DC Converter; No External Components Required Up to 91% Efficiency 500mA Output Current Capability 2.3V to 5.5V Input Voltage Range Fixed Output Voltages from 1.2V to 1.8V 35µA PFM Quiescent Current Best-in-Class Load and Line Transient Response ±4% PWM DC Voltage Accuracy No External Component.

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FAN4603 — 500mA, Fully Integrated Buck Power Supply Module www.DataSheet4U.com April 2010 FAN4603 500mA, Fully Integrated, Buck Power Supply Module Features ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ Solder and Play DC/DC Converter; No External Components Required Up to 91% Efficiency 500mA Output Current Capability 2.3V to 5.5V Input Voltage Range Fixed Output Voltages from 1.2V to 1.8V 35µA PFM Quiescent Current Best-in-Class Load and Line Transient Response ±4% PWM DC Voltage Accuracy No External Components Required High-Efficiency, Low-Ripple, Light-Load PFM Thermal Shutdown (TSD), Under-Voltage Lockout, (UVLO), and Short-Circuit (SCP) Protection 4.0 x 2.5mm MLP Package Maximum Height: 1.1mm Description The FAN4603 is a fully integrated synchronous DC/DC buck converter that provides up to 500mA of output current over an input voltage ranging from 2.3V to 5.5V. It provides a fixed output voltage level ranging from 1.2V to 1.8V. Other voltage options are available on request. The FAN4603 converter is offered as an ultra-miniature “Solder and Play” solution that requires no external components and is able to achieve a DC accuracy of ±4% PWM and an output ripple less than 12mV. Total footprint is 4.0 x 2.5mm with a maximum height of 1mm. It can be used in small battery-powered devices and applications with distributed DC POL requirements. At moderate and light loads, pulse frequency modulation is used to operate the device in power-save mode with a typical quiescent current of 35µA. Even with such a low quiescent current, the part exhibits excellent transient response during large load swings. At higher loads, the system automatically switches to fixed-frequency control. In shutdown mode, the supply current drops below 2µA, reducing power consumption. Applications ƒ ƒ ƒ ƒ POL and Distributed DC-DC Module Applications Small Form Factor, Battery-Powered Applications POL Core Power for FPGA, DSP, CPU, and GPU with Fast-Transient, Wide Dynamic Load Requirements Wireless Cards, Meters, Hearing Aids, Bluetooth Headsets, POS Equipment, VOIP, PDAs, MIDs, Netbooks, and Servers Ordering Information Part Number FAN4603MM18X FAN4603MM15X FAN4603MM12X Note: Output Voltage 1.82V 1.5V 1.23V (1) Package 6 Lead Molded Leadless Package (MLP), 4 x 2.5 x 1mm 6 Lead Molded Leadless Package (MLP), 4 x 2.5 x 1mm 6 Lead Molded Leadless Package (MLP), 4 x 2.5 x 1mm Temperature Range –40 to 85°C –40 to 85°C –40 to 85°C Packing Tape and Reel Tape and Reel Tape and Reel 1. Other voltage options are available on request. Contact a Fairchild representative. © 2009 Fairchild Semiconductor Corporation FAN4603 • Rev. 1.0.0 www.fairchildsemi.com www.DataSheet4U.com FAN4603 — 500mA, Fully Integrated Buck Power Supply Module Typical Application Figure 1. Typical Application Pin Configuration Figure 2. MLP 4.0 x 2.5 mm (Top View) Figure 3. 3D Package View Pin Definitions Pin # 1 2 3 4 5 6 P1 Name VIN EN SW VOUT FB GND GND Description Input Voltage. Connect to input power source Enable. The device is in shutdown mode when voltage to this pin is <0.4V and enabled when >1.2V. Do not leave this pin floating. Switching Node. Leave this pin floating. Output Voltage. Connect to Load. Feedback/VOUT. This pin must be shorted directly to VOUT (Pin 4). Ground. Power and IC ground. All signals are referenced to this pin. Optional Ground Connection. Not typically used. © 2009 Fairchild Semiconductor Corporation FAN4603 • Rev. 1.0.0 www.fairchildsemi.com 2 www.DataSheet4U.com FAN4603 — 500mA, Fully Integrated Buck Power Supply Module Absolute Maximum Ratings Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. Symbol VIN TJ TSTG TL ESD Parameter Input Voltage with Respect to GND Voltage on Any Other Pin with Respect to GND Junction Temperature Storage Temperature Lead Temperature (Soldering, 10 Seconds) Electrostatic Discharge Capability Human Body Model JESD22-A114 Charged Device Model, JESD22-C101 Min. -0.3 -0.3 -40 -65 6 2 Max. 6.0 VIN 150 +150 +260 Units V V °C °C °C kV Recommended Operating Conditions The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not recommend exceeding them or designing to Absolute Maximum Ratings. Symbol VCC IOUT TA TJ Supply Voltage Range Output Current Parameter Min. 2.3 0 -40 -40 Max. 5.5 500 +85 +125 Units V mA °C °C Operating Ambient Temperature Operating Junction Temperature Thermal Properties Symbol ΘJA Parameter Junction-to-Ambient Thermal Resistance (2) Typical 120 Units °C/W Note: 2. Junction-to-.


5059RH FAN4603 MAX15059


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