RT6150AGQW Richtek

RT6150A/B Current Mode Buck-Boost Converter General Description Features Single Inductor The RT6150A/B is a high efficiency, fixed frequency, Buck- Fixed Frequency Operation with Battery Voltages Boost DC/DC converter that operates from input voltages Synchronous Rectification : Up to 90% Efficiency above, below or equal to the output voltage. The topology Up to 800mA Continuous Output Current incorporated in the IC provides a continuous transfer VOUT Disconnected from VIN during Shutdown function through all operating modes, making the product Power Save Mode (PSM) Enable Control ideal for single lithium-ion, multi-cell alkaline or Ni-MH <1A Shutdown Current battery applications where the output voltage is within the Input Voltage Range: 1.8V to 5.5V battery voltage range. Fixed 3.3V and Adjustable Output Voltage Options The device includes two N-MOSFET switches and two P- from 1.8V to 5.5V MOSFET switches for high efficiency operation. Switching 10-Lead WDFN Packages frequency is set at 1MHz to reduce the external RoHS Compliant and Halogen Free component size. Quiescent current is only 60A in Power Save Mode (PSM), maximizing battery life in portable Ordering Information applications. PSM operation is user controlled and can RT6150A/B- be enabled by driving the PS pin low. If the PS pin is Package Type driven high, then fixed frequency switching is enabled. QW : WDFN-10L 3x3 (W-Type) Other features include low shutdown current, internal QW : WDFN-10L 2.5x2.5 (W-Type) soft-start control, thermal shutdown protection and current Lead Plating System limit. The RT6150A is available in the WDFN-10L 3x3 G : Green (Halogen Free and Pb Free) package and the RT6150B is available in the WDFN-10L Output Voltage 2.5x2.5 package. 33 : 3.3V (Only for RT6150B) A : WDFN-10L 3x3 Applications B : WDFN-10L 2.5x2.5 Note : Portable Products Richtek products are : Handheld Instrumentation RoHS compliant and compatible with the current require- ments of IPC/JEDEC J-STD-020. Suitable for use in SnPb or Pb-free soldering processes. Simplified Application Circuit LX1 LX2 RT6150A/B Battery VOUT V VIN OUT R1 VINA FB R2 Enable EN PS GND Copyright 2015 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. DS6150A/B-05 July 2015 www.richtek.com 1RT6150A/B Marking Information Pin Configurations RT6150AGQW (TOP VIEW) 0N= : Product Code 1 10 VOUT FB YMDNN : Date Code 0N=YM 2 9 LX2 GND DNN 3 8 GND VINA 4 7 PS LX1 5 11 6 VIN EN WDFN-10L 3x3 / WDFN-10L 2.5x2.5 RT6150BGQW 00 : Product Code W : Date Code 00W RT6150B-33GQW 03 : Product Code 03W W : Date Code Functional Pin Description Pin No. Pin Name Pin Function Output of the Buck-Boost Converter. Connect a capacitor between the 1 VOUT VOUT and GND. 2 LX2 Second Switch Node. Connect this pin to the inductor. 3, 9, Power Ground. The exposed pad must be soldered to a large PCB and GND 11 (Exposed Pad) connected to GND for maximum power dissipation. 4 LX1 First Switch Node. Connect this pin to the inductor. Power Input. Connect an at least 10F capacitor between the VIN pin and 5 VIN GND. 6 EN Enable Control Input for the Buck-Boost Converter. PSM Control Input. Pull low for PSM operation and pull high for fixed 7 PS switching frequency operation. 8 VINA Supply Voltage Input for Control Circuit. Feedback Input. For adjustable versions, connect a resistive divider to set 10 FB the output voltage and it can be adjusted from 1.8V to 5.5V For fixed version, must be connected to VOUT. Copyright 2015 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. www.richtek.com DS6150A/B-05 July 2015 2 GND