LTC3114-1 40V, 1A Synchronous Buck-Boost DC/DC Converter with Programmable Output Current FEATURES DESCRIPTION n Regulates V Above, Below or Equal to V The LTC 3114-1 is a versatile, wide operating voltage OUT IN n Single Inductor range synchronous monolithic buck-boost DC/DC con- n Wide V Range: 2.2V to 40V verter with programmable average output current. The IN n Wide V Range: 2.7V to 40V LTC3114-1s proprietary buck-boost PWM control cir- OUT n 1A Output Current in Buck Mode cuitry delivers low noise operation across the entire n 0.5A Output Current, V = 3.6V, V = 5V operating voltage range. Current mode control ensures IN OUT n Programmable Average Output Current exceptional line and load transient responses. n Up to 96% Efficiency Synchronous, internal MOSFET switches and pin select- n Burst Mode Operation, 30A No-Load I Q able Burst Mode operation maintain high efficiency across n Current Mode Control the entire range of load current. Average output current n 1.2MHz Ultralow Noise PWM is programmed with a standard resistor and provides n Accurate RUN Pin Threshold the basis for wide input range, high efficiency charging n Thermally Enhanced, 16-lead 3mm 5mm DFN and systems or constant current, high efficiency LED drive. TSSOP Packages Regulator turn-on is programmable through the accu- n AEC-Q100 Qualified for Automotive Applications rate RUN pin. Quiescent current is just 3A in shutdown. Overtemperature protection, short-circuit protection and soft-start are integrated. The LTC3114-1 is offered in APPLICATIONS 16-lead 3mm 5mm 0.75mm DFN and 16 lead TSSOP n 24V/28V Industrial Power Supply (FE) packages. n 12V Lead-Acid to 12V Regulator All registered trademarks and trademarks are the property of their respective owners. Protected n High Power LED Driver by U.S. patents, including 6404251, 6166527. n 12V/24V Solar Panel Battery Charging Systems n Automotive Power Systems TYPICAL APPLICATION Efficiency vs Input Voltage 6.8H 95 68nF 68nF SW1 SW2 90 BST1 BST2 V LTC3114-1 OUT V 5V IN V PV IN OUT 85 2.7V TO 40V 1A 10F 30F PV LDO IN V > 5V IN 2M 4.7F RUN PLDO 80 FB PROG VC 4700pF MODE 75 499k 33nF 20k GND PGND I = 300mA 27.4k LOAD I = 600mA LOAD 31141 TA01a 70 1 10 40 INPUT VOLTAGE (V) 31141 TA01b Rev. D 1 Document Feedback For more information www.analog.com EFFICIENCY (%)LTC3114-1 ABSOLUTE MAXIMUM RATINGS (Note 1) V , PV , PV ........................................ 0.3V to 45V Storage Temperature Range....................65C to 150C IN IN OUT V .....................................V 0.3V to V + 6V Lead Temperature (Soldering, 10 Sec) BST1 SW1 SW1 V .....................................V 0.3V to V + 6V FE Package .......................................................300C BST2 SW2 SW2 V ............................................. 0.3V to (V + 0.3V) RUN IN Voltage, All Other Pins ................................. 0.3V to 6V Operating Junction Temperature Range (Notes 2, 4) LTC3114E-1/LTC3114I-1 ..................... 40C to 125C LTC3114H-1 ....................................... 40C to 150C LTC3114MP-1 ..................................... 55C to 150C PIN CONFIGURATION TOP VIEW TOP VIEW PGND 1 16 MODE PGND 1 16 MODE SW2 2 15 SW1 SW2 2 15 SW1 PV 3 14 PV PV 3 14 PV OUT IN OUT IN RUN 4 13 BST1 RUN 4 13 BST1 17 17 PGND PGND PROG 5 12 BST2 PROG 5 12 BST2 VC 6 11 PLDO VC 6 11 PLDO FB 7 10 V FB 7 10 V IN IN GND 8 9 LDO GND 8 9 LDO FE PACKAGE DHC PACKAGE 16-LEAD PLASTIC TSSOP 16-LEAD (5mm 3mm) PLASTIC DFN T = 150C, = 38C/W T = 150C, = 43C/W (4-LAYER BOARD), = 4C/W JMAX JA JMAX JA JC EXPOSED PAD (PIN 17) IS PGND, MUST BE SOLDERED TO PCB EXPOSED PAD (PIN 17) IS PGND, MUST BE SOLDERED TO PCB FOR RATED THERMAL PERFORMANCE FOR RATED THERMAL PERFORMANCE ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC3114EDHC-1 PBF LTC3114EDHC-1 TRPBF 31141 16-Lead (5mm 3mm) Plastic DFN 40C to 125C LTC3114IDHC-1 PBF LTC3114IDHC-1 TRPBF 31141 16-Lead (5mm 3mm) Plastic DFN 40C to 125C LTC3114HDHC-1 PBF LTC3114HDHC-1 TRPBF 31141 16-Lead (5mm 3mm) Plastic DFN 40C to 150C LTC3114MPDHC-1 PBF LTC3114MPDHC-1 TRPBF 31141 16-Lead (5mm 3mm) Plastic DFN 55C to 150C LTC3114EFE-1 PBF LTC3114EFE-1 TRPBF 3114FE-1 16-Lead Plastic TSSOP 40C to 125C LTC3114IFE-1 PBF LTC3114IFE-1 TRPBF 3114FE-1 16-Lead Plastic TSSOP 40C to 125C LTC3114HFE-1 PBF LTC3114HFE-1 TRPBF 3114FE-1 16-Lead Plastic TSSOP 40C to 150C LTC3114MPFE-1 PBF LTC3114MPFE-1 TRPBF 3114FE-1 16-Lead Plastic TSSOP 55C to 150C Rev. D 2 For more information www.analog.com