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RT8260A

Richtek
Part Number RT8260A
Manufacturer Richtek
Description 1.4MHz Step-Down Converter
Published Jan 28, 2013
Detailed Description RT8260A 1.8A, 24V, 1.4MHz Step-Down Converter General Description The RT8260A is a high voltage buck converter that can ...
Datasheet PDF File RT8260A PDF File

RT8260A
RT8260A

Overview
RT8260A 1.
8A, 24V, 1.
4MHz Step-Down Converter General Description The RT8260A is a high voltage buck converter that can support the input voltage range from 4.
5V to 24V and the output current can be up to 1.
8A.
Current Mode operation provides fast transient response and eases loop stabilization.
The chip also provides protection functions such as cycleby-cycle current limiting and thermal shutdown protection.
The RT8260A is available in a WDFN-8L 2x2 package.
Features z z z z z z z z z Wide Operating Input Voltage Range : 4.
5V to 24V Adjustable Output Voltage Range : 0.
8V to 15V 1.
8A Output Current 0.
3Ω Internal Power MOSFET Switch High Efficiency up to 92% 1.
4MHz Fixed Switching Frequency Stable with Low ESR Output Ceramic Capacitors Thermal Shutdown Cycle-By-Cycle Over Current Protection RoHS Compliant and Halogen Free Ordering Information RT8260A Package Type QW : WDFN-8L 2x2 (W-Type) Lead Plating System G : Green (Halogen Free and Pb Free) Note : Richtek products are : ` z Applications z z z z Distributed Power Systems Battery Charger Pre-Regulator for Linear Regulators WLED Drivers RoHS compliant and compatible with the current requirements of IPC/JEDEC J-STD-020.
Suitable for use in SnPb or Pb-free soldering processes.
Pin Configurations http://www.
DataSheet4U.
net/ (TOP VIEW) NC SW VIN EN 1 2 3 4 8 7 6 5 ` Marking Information JG : Product Code 9 NC BOOT GND FB JGW W : Date Code WDFN-8L 2x2 Typical Application Circuit VIN 4.
5V to 24V CIN 10µF Chip Enable Open = Automatic Startup 3 VIN BOOT 7 CBOOT L1 10nF 4.
7µH D1 B230A R1 62k R2 19.
6k VOUT 3.
3V RT8260A SW 2 4 EN FB 5 GND 6, 9 (Exposed Pad) COUT 22µF DS8260A-03 March 2011 GND www.
richtek.
com 1 datasheet pdf - http://www.
DataSheet4U.
net/ RT8260A Table 1.
Recommended Component Selection VOUT (V) L1 (μH) R2 (k Ω) R1 (k Ω) COUT ( μF) 1.
2 2 124 62 22 1.
8 2 49.
9 62 22 2.
5 3.
6 29.
4 62 22 3.
3 4.
7 19.
6 62 22 5 6.
8 13 68 22 8 10 8.
2 75 22 10 10 6.
49 75 22 15 15 4.
2 75 22 Functional Pin Descripti...


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