LTC4412HV TM 36V, Low Loss PowerPath Controller in ThinSOT FEATURES DESCRIPTION The LTC 4412HV controls an external P-channel MOSFET Very Low Loss Replacement for Power Supply to create a near ideal diode function for power switchover ORing Diodes or load sharing. This permits highly efficient ORing of 3V to 36V AC/DC Adapter Voltage Range multiple power sources for extended battery life and low 40C to 125C Operating Temperature Range self- heating. When conducting, the voltage drop across Minimal External Components the MOSFET is typically 20mV. For applications with a Automatic Switching Between DC Sources wall adapter or other auxiliary power source, the load Simplifies Load Sharing with Multiple Batteries is automatically disconnected from the battery when the Low Quiescent Current: 11A auxiliary source is connected. Two or more LTC4412HVs 2.5V to 36V Battery Voltage Range may be interconnected to allow load sharing between Reverse Battery Protection multiple batteries or charging of multiple batteries from Drives Almost Any Size MOSFET for Wide Range of a single charger. The LTC4412HV is an extended supply Current Requirements and temperature range version of the LTC4412. MOSFET Gate Protection Clamp Manual Control Input The wide supply operating range supports operation from TM Low Profile (1mm) SOT -23 (ThinSOT ) Package one to eight Li-Ion cells in series. The low quiescent cur- AEC-Q100 Qualified for Automotive Applications rent (11A typical) is independent of the load current. The gate driver includes an internal voltage clamp for MOSFET protection. APPLICATIONS The STAT pin can be used to enable an auxiliary P-channel Industrial and Automotive Applications MOSFET power switch when an auxiliary supply is Notebook and Handheld Computers detected. This pin may also be used to indicate to a micro- USB-Powered Peripherals controller that an auxiliary supply is connected. The con- Uninterruptable Power Supplies trol (CTL) input enables the user to force the primary Logic Controlled Power Switch MOSFET off and the STAT pin low. All registered trademarks and trademarks are the property of their respective owners. The LTC4412HV is available in a low profile (1mm) SOT-23 package. LTC4412HV vs Schottky Diode Forward Voltage Drop TYPICAL APPLICATION 1 CONSTANT 1N5819 R ON WALL ADAPTER INPUT FDN306P TO LOAD LTC4412HV BATTERY C OUT CELL(S) LTC4412HV 1 6 V CC V SENSE CONSTANT IN 2 5 VOLTAGE GND GATE 470k SCHOTTKY STATUS OUTPUT 3 4 DIODE CTL STAT LOW WHEN WALL 4412HV F01 ADAPTER PRESENT 0 0.02 0.5 Figure1. Automatic Switchover of Load Between a Battery and a Wall Adapter FORWARD VOLTAGE (V) 4412HV F01b Rev. B Document Feedback For more information www.analog.com 1 CURRENT (A)LTC4412HV PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS (Note 1) Supply Voltage (V ) .................................. 14V to 40V IN Voltage from V to SENSE ........................ 40V to 40V IN TOP VIEW Input Voltage V 1 6 SENSE IN CTL ........................................................ 0.3V to 40V GND 2 5 GATE SENSE .................................................... 14V to 40V CTL 3 4 STAT Output Voltage S6 PACKAGE GATE ..................... 0.3V to the Higher of V + 0.3V IN 6-LEAD PLASTIC TSOT-23 or SENSE + 0.3V T = 125C, = 230C/W JMAX JA STAT ......................................................0.3V to 40V Operating Ambient Temperature Range (Note 2) ........................................... 40C to 125C Operating Junction Temperature ........... 40C to 125C Storage Temperature Range ................... 65C to 150C Lead Temperature (Soldering, 10 sec) .................. 300C ORDER INFORMATION TAPE AND REEL (MINI) TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC4412HVIS6 TRMPBF LTC4412HVIS6 TRPBF LTBHR 6-Lead Plastic TSOT-23 40C to 125C AUTOMOTIVE PRODUCTS** LTC4412HVIS6 WTRMPBF LTC4412HVIS6 WTRPBF LTBHR 6-Lead Plastic TSOT-23 40C to 125C Contact the factory for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with TRMPBF suffix. **Versions of this part are available with controlled manufacturing to support the quality and reliability requirements of automotive applications. These models are designated with a W suffix. Only the automotive grade products shown are available for use in automotive applications. Contact your local Analog Devices account representative for specific product ordering information and to obtain the specific Automotive Reliability reports for thesemodels. The l denotes the specifications which apply over the full operating ELECTRICAL CHARACTERISTICS junction temperature range, unless otherwise noted specifications are at T = 25C, V = 12V, CTL and GND = 0V. Current into a pin is A IN positive and current out of a pin is negative. All voltages are referenced to GND, unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS V , Operating Supply Range V and/or V Must Be in This Range l 2.5 36 V IN IN SENSE V for Proper Operation SENSE l I Quiescent Supply Current at Low Supply V = 3.6V. Measure Combined Current 11 19 A QFL IN While in Forward Regulation at V and SENSE Pins Averaged with IN V = 3.5V and V = 3.6V (Note 3) SENSE SENSE I Quiescent Supply Current at High Supply V = 36V. Measure Combined Current l 18 32 A QFH IN While in Forward Regulation at V and SENSE Pins Averaged with IN V = 35.9V and V = 36V (Note 3) SENSE SENSE I Quiescent Supply Current at Low Supply V = 3.6V, V = 3.7V. Measure 10 19 A QRL IN SENSE While in Reverse Turn-Off Combined Current of V and SENSE Pins IN I Quiescent Supply Current at High Supply V = 35.9V, V = 36V. Measure 19 33 A QRH IN SENSE While in Reverse Turn-Off Combined Current of V and SENSE Pins IN Rev. B 2 For more information www.analog.com