LTC3130/LTC3130-1 25V, 600mA Buck-Boost DC/DC Converter with 1.6A Quiescent Current FEATURES DESCRIPTION n Regulates V Above, Below or Equal to V The LTC3130/LTC3130-1 are high efficiency, low noise, OUT IN n Wide V Range: 2.4V to 25V, 600mA buck-boost converters with wide V and V IN IN OUT <1V to 25V (Using EXTV Input) ranges. For high efficiency operation at light loads, CC n V Range: 1V to 25V BurstMode operation can be selected, reducing the quies- OUT n Adjustable Output Voltage (LTC 3130) cent current to just 1.6A. Converter start-up is achieved n Four Selectable Fixed Output Voltages (LTC3130-1) from sources as low as 7.5W. n 1.2A No-Load Input Current in Burst Mode The LTC3130/LTC3130-1 employ an ultralow noise, 1.2MHz Operation (V = 12V, V = 5V) IN OUT PWM architecture that minimizes solution footprint by n 600mA Output Current in Buck Mode allowing the use of tiny, low profile inductors and ceramic n Pin-Selectable 850mA/450mA Current Limit (LTC3130) capacitors. Built-in loop compensation and soft-start n Up to 95% Efficiency reduces external parts count and simplifies the design. n Pin-Selectable Burst Mode Operation Features include an accurate RUN comparator threshold to n 1.2MHz Ultralow Noise PWM Frequency allow predictable regulator turn-on and a maximum power n Accurate RUN Pin Threshold point control (MPPC) capability that ensures maximum n Power Good Indicator power extraction from non-ideal sources such as photo- n Programmable Maximum Power Point Control voltaic panels. The LTC3130-1 includes an internal voltage n I = 500nA in Shutdown Q divider to provide four selectable fixed output voltages. n Thermally-Enhanced 20-Lead 3mm 4mm QFN and Additional features include a power good output, an external 16-Lead MSOP Packages V input and thermal shutdown. CC APPLICATIONS The LTC3130 and LTC3130-1 are available in thermally- enhanced 20-lead 3mm 4mm QFN and 16-lead MSOP n Long-Life, Battery-Operated Instruments packages. n Portable Military Radios n L, LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks Low Power Sensors and PowerPath is a trademark of Linear Technology Corporation. All other trademarks are the n Solar Panel Post-Regulator/Charger property of their respective owners. TYPICAL APPLICATION Efficiency vs Load 100 22nF 22nF 6.8H 90 80 V IN 4 Li-Ion BST1 SW1 SW2 BST2 V 70 OUT PV V 12V IN OUT 60 600mA 10F V 10F IN 50 RUN EXTV CC LTC3130-1 40 + V MPPC CC 30 MODE PGOOD 20 VS1 10 VS2 V CC V = 14.4V, V = 12V IN OUT GND PGND 0 4.7F 0.01 0.1 1 10 100 800 LOAD (mA) 3130 TA01a 3130 TA01b 3130f 1 For more information www.linear.com/LTC3130 EFFICIENCY (%)LTC3130/LTC3130-1 (Notes 1, 8) ABSOLUTE MAXIMUM RATINGS PV V , V Voltage .............................0.3 to 27.5V Operating Junction Temperature IN , IN OUT EXTV Voltage .........................................0.3 to 27.5V Range (Notes 2, 5, 6) ......................... 40C to 125C CC BST1, BST2 Voltage ...............(SW 0.3V) to (SW + 6V) Storage Temperature Range .................. 65C to 150C RUN, PGOOD Voltage .................................0.3 to 27.5V Lead Temperature (Soldering, 10sec) MODE, MPPC ................................................. 0.3 to 6V MSE ..................................................................300C VS1, VS2 Voltage (LTC3130-1) ....................... 0.3 to 6V ILIM, FB Voltage (LTC3130) ........................... 0.3 to 6V PGOOD Sink Current ..............................................12mA PIN CONFIGURATION TOP VIEW 20 19 18 17 TOP VIEW BST1 1 16 BST2 GND 1 16 SW2 PV 2 15 SW2 IN BST1 2 15 BST2 V V SW1 3 14 V 3 14 OUT IN OUT 21 PV 4 17 13 PGOOD IN GND RUN 4 13 PGOOD V 5 GND 12 EXTV IN CC RUN 6 11 MODE V 5 12 EXTV CC CC V 7 10 VS1/ILIM CC MPPC 6 11 MODE MPPC 8 9 VS2/FB MSE PACKAGE 7 8 9 10 16-LEAD PLASTIC MSOP T = 125C, = 40C/W, = 10C/W (NOTE 6) JMAX JA JC EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB UDC PACKAGE 20-LEAD (3mm 4mm) PLASTIC QFN T = 125C, = 52C/W, = 6.8C/W (NOTE 6) JMAX JA JC EXPOSED PAD (PIN 21) IS GND, MUST BE SOLDERED TO PCB