POWER LOSS (W) LTC4013 60V Synchronous Buck Multi-Chemistry Battery Charger FEATURES DESCRIPTION n Wide Input Voltage Range: 4.5V to 60V The LTC 4013 is a high voltage battery charger that is well n Wide Battery Voltage Range: 2.4V to 60V suited for charging a wide range of lead-acid batteries n Built-In Charge Algorithms for Lead-Acid and Li-Ion including both vented and sealed types. It supports bulk, n 0.5% Float Voltage Accuracy float, absorption and equalization charging. The LTC4013 n 5% Charge Current Accuracy also supports termination options for Li-Ion/Polymer and n Maximum Power Point Tracking Input Control LiFePO batteries. 4 n NTC Temperature Compensated Float Voltage Charging is performed with a high efficiency synchronous n Two Open Drain Status Pins buck (step-down) converter that uses external N-channel n Thermally Enhanced 28-Lead 4mm 5mm QFN MOSFETs. Switching frequency is resistor programmable Package or can be synchronized to an external clock. Charge current is programmed with an external sense resistor. APPLICATIONS The LTC4013 also includes maximum power point tracking n Battery Backup for Lighting, UPS Systems, Security input-voltage regulation for limited power sources such as Cameras, Computer Control Panels solar panels. Other features include user-programmable n Portable Medical Equipment absorption and equalization times, temperature-compen- n Solar-Powered Systems sated charge voltage and an external N-channel MOSFET n Industrial Battery Charging isolation control circuit. All registered trademarks and trademarks are the property of their respective owners. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 9246383. TYPICAL APPLICATION 15V-34V to 6 Cell Lead-Acid (12.6V) 5A Step-Down Battery Charger Efficiency and Power Loss vs Charge Current 97 2.5 15V-34V EFFICIENCY 96 95 2.0 POWER LOSS 94 INFET VIN S V IN BST 93 1.5 DCIN TG 92 91 1.0 ENAB SW BG 90 MPPT 89 0.5 V = 24V IN V = 13.8V BAT 88 INTV CC FBOC 0 87 PGND 0 1 2 3 4 5 SENSE CHARGE CURRENT (A) LTC4013 4013 TA01a BASED ON APPLICATION ON BACK PAGE BAT INTV MODE1 CC MODE2 FB INTV CC SYNC NTC RNTC SGND RT TMR LB ITH 4013 TA01 Rev B 1 Document Feedback For more information www.analog.com EFFICIENCY (%)LTC4013 ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1) TOP VIEW DCIN, V , VIN S, ENAB, STAT0, STAT1 .... 0.3V to 60V IN INFET ......................................................... 0.3V to 73V BST ........................................................... 0.3V to 66V 28 27 26 25 24 23 STAT0, STAT1 ..........................................................5mA INFET 1 22 TG SENSE, BAT ............................................... 0.3V to 60V DCIN 2 21 BST MPPT 3 20 SENSE SENSE-BAT ............................................... 0.3V to 0.3V FBOC 4 19 BAT 29 FBOC, MPPT, FB, MODE1, MODE2, SYNC, SGND ENAB 5 18 FB INTV , NTC ............................................ 0.3V to 6V CC ISMON 6 17 NTC TMR, LB, ITH ............................................... 0.3V to 3V STAT0 7 16 ITH Operating Junction Temperature Range STAT1 8 15 RT (Note 2) ............................................. 40C to 125C 9 10 11 12 13 14 Storage Temperature Range .................. 65C to 150C UFD PACKAGE 28-LEAD (4mm 5mm) PLASTIC QFN T = 125C, = 43C/W, = 3.4C/W JMAX JA JC EXPOSED PAD (PIN 29) IS SGND, MUST BE SOLDERED TO PCB ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE LTC4013EUFD PBF LTC4013EUFD TRPBF 4013 28-Lead (4mm 5mm) Plastic QFN 40C to 125C LTC4013IUFD PBF LTC4013IUFD TRPBF 4013 28-Lead (4mm 5mm) Plastic QFN 40C to 125C Contact the factory for parts specified with wider operating temperature ranges. Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with TRMPBF suffix. Rev B 2 For more information www.analog.com LB VIN S TMR V IN MODE1 PGND MODE2 INTV CC CLKOUT BG SYNC SW