LT4320/LT4320-1 Ideal Diode Bridge Controller Features Description n Maximizes Power Efficiency The LT 4320/LT4320-1 are ideal diode bridge controllers n Eliminates Thermal Design Problems that drive four N-channel MOSFETs, supporting voltage n DC to 600Hz rectification from DC to 600Hz typical. By maximizing n available voltage and reducing power dissipation (see 9V to 72V Operating Voltage Range n thermograph comparison below), the ideal diode bridge I = 1.5mA (Typical) Q n simplifies power supply design and reduces power supply Maximizes Available Voltage n cost, especially in low voltage applications. Available in 8-Lead (3mm 3mm) DFN, 12-Lead MSOP and 8-Lead PDIP Packages An ideal diode bridge also eliminates thermal design problems, costly heat sinks, and greatly reduces PC board a area. The LT4320s internal charge pump supports an all- n Security Cameras NMOS design, which eliminates larger and more costly n Terrestrial or Airborne Power Distribution Systems PMOS switches. If the power source fails or is shorted, a n Power-over-Ethernet Powered Device with a fast turn-off minimizes reverse current transients. Secondary Input The LT4320 is designed for DC to 60Hz typical voltage n Polarity-Agnostic Power Input rectification, while the LT4320-1 is designed for DC to n Diode Bridge Replacement 600Hz typical voltage rectification. Higher frequencies of L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear operation are possible depending on MOSFET size and Technology Corporation. All other trademarks are the property of their respective owners. Patent pending. operating load current. t a Thermograph of Passive Diode Bridge + Temperature Rise DIODE OUTP TG1 TG2 MOSFET SBM CURRENT 2.5m 1040 LT4320 4320 TA01b OUTPUT SBM1040 (4) 2A 0.6C 15C ~ IN1 IN2 9V TO 72V 4A 3.5C 32C Thermograph of LT4320 BG2 BG1 Driving Four MOSFETs 6A 6.7C 49C OUTN 8A 11C 66C INPUT 10A 16C 84C DC TO 600Hz (TYP) DC Input, On Same PCB ~ 4320 TA01a 4320 TA01c LT4320+2.5m FET (4) CONDITIONS: 24V AC , 9.75A DC LOAD ON SAME PCB IN 4320fb 1 For more information www.linear.com/LT4320 pplication ypical pplicationsLT4320/LT4320-1 a MaxiMMu r (Notes 1, 2) Supply Voltages Operating Junction Temperature Range IN1, IN2 .................................................... 3V to 80V LT4320I ................................................40C to 85C OUTP ..................................................... 0.3V to 80V LT4320H ............................................ 40C to 125C Output Voltages (Note 3) LT4320MP ......................................... 55C to 125C BG1, BG2, TG1, TG2 ............................... 0.3V to 80V Storage Temperature Range .................. 65C to 150C TG1-IN1, TG2-IN2 ....................................0.3V to 12V Lead Temperature (Soldering, 10 sec) MSE, PDIP Packages ........................................300C p Fc TOP VIEW TOP VIEW TOP VIEW IN2 1 12 IN1 IN2 1 8 IN1 TG2 2 11 TG1 IN2 1 8 IN1 TG2 2 7 TG1 NC 3 10 NC 9 13 TG2 2 TG1 7 NC 4 9 OUTP BG2 3 6 OUTP 5 BG2 8 NC BG2 3 6 OUTP BG1 OUTN 4 5 6 BG1 7 OUTN BG1 OUTN 4 5 MSE PACKAGE DD PACKAGE 12-LEAD PLASTIC MSOP N8 PACKAGE 8-LEAD (3mm 3mm) PLASTIC DFN 8-LEAD PLASTIC DIP T = 150C, = 10C/W JMAX JC T = 150C, = 5.5C/W JMAX JC EXPOSED PAD (PIN 13) MUST BE T = 150C, = 45C/W JMAX JC EXPOSED PAD (PIN 9) MUST BE CONNECTED TO OUTN (PIN 7) CONNECTED TO OUTN (PIN 5) Dro Fni M OPERATING JUNCTION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LT4320IDD PBF LT4320IDD TRPBF LGCV 8-Lead (3mm 3mm) Plastic DFN 40C to 85C LT4320HDD PBF LT4320HDD TRPBF LGCV 8-Lead (3mm 3mm) Plastic DFN 40C to 125C LT4320IDD-1 PBF LT4320IDD-1 TRPBF LGCW 8-Lead (3mm 3mm) Plastic DFN 40C to 85C LT4320HDD-1 PBF LT4320HDD-1 TRPBF LGCW 8-Lead (3mm 3mm) Plastic DFN 40C to 125C LT4320IMSE PBF LT4320IMSE TRPBF 4320 12-Lead Plastic MSOP 40C to 85C LT4320HMSE PBF LT4320HMSE TRPBF 4320 12-Lead Plastic MSOP 40C to 125C LT4320MPMSE PBF LT4320MPMSE TRPBF 4320 12-Lead Plastic MSOP 55C to 125C LT4320IMSE-1 PBF LT4320IMSE-1 TRPBF 43201 12-Lead Plastic MSOP 40C to 85C LT4320HMSE-1 PBF LT4320HMSE-1 TRPBF 43201 12-Lead Plastic MSOP 40C to 125C LT4320MPMSE-1 PBF LT4320MPMSE-1 TRPBF 43201 12-Lead Plastic MSOP 55C to 125C LT4320IN8 PBF NA LT4320N8 8-Lead PDIP 40C to 85C LT4320HN8 PBF NA LT4320N8 8-Lead PDIP 40C to 125C LT4320IN8-1 PBF NA LT4320N8-1 8-Lead PDIP 40C to 85C LT4320HN8-1 PBF NA LT4320N8-1 8-Lead PDIP 40C to 125C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Consult LTC Marketing for information on nonstandard lead based finish parts. For more information on lead free part marking, go to: