LTC4412HV Linear Technology, LTC4412HV Datasheet
LTC4412HV
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LTC4412HV Summary of contents
Page 1
... MOSFET is typically 20mV. For applications with a wall adapter or other auxiliary power source, the load is auto- matically disconnected from the battery when the auxiliary source is connected. Two or more LTC4412HVs may be in- terconnected to allow load sharing between multiple bat- teries or charging of multiple batteries from a single charger. ...
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... V = 14V SENSE SENSE V – 2.5V V 36V IN SENSE IN V – 2.5V V 36V SENSE IN IN www.DataSheet4U.com U W INFORMATION ORDER PART NUMBER LTC4412HVIS6 TOP VIEW 6 SENSE 5 GATE 4 STAT S6 PART MARKING S6 PACKAGE = 125 C, = 230 C/W LTBHR JA MIN TYP MAX 2 ...
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... Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: The LTC4412HV is guaranteed to meet performance specifications over the – 125 C operating ambient temperature range. Note 3: This results in the same supply current as would be observed with an external P-channel MOSFET connected to the LTC4412HV and operating in forward regulation ...
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... LTC4412HV W U TYPICAL PERFOR A CE CHARACTERISTICS V vs Temperature and FR Supply Voltage 2. 28V 36V IN 18 –50 – 100 TEMPERATURE ( C) 4412HV G01 V and SENSE Pin Leakages vs IN Temperature and Supply Voltage 0 I LEAK – 36V VIN ...
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... SOURCE A1 0.5V + ON/OFF C1 ANALOG CONTROLLER – GND 2 *DRAIN-SOURCE DIODE OF MOSFET LTC4412HV www.DataSheet4U.com pin with an auxiliary reached. The STAT pin will then go RTO and SENSE pins when an auxiliary power IN pin). This input is usually supplied power from + OUTPUT TO LOAD – LINEAR GATE ...
Page 6
... The gate clamp voltage below the higher of V G(ON the SENSE voltage pulls SENSE the LTC4412HV will regulate the GATE voltage to maintain a 20mV difference between V and V IN the V of the MOSFET. The system is now in the forward DS regulation mode and the load will be powered from the primary supply ...
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... U U APPLICATIO S I FOR ATIO Introduction The system designer will find the LTC4412HV useful in a variety of cost and space sensitive power control applica- tions that include low loss diode OR’ing, fully automatic switchover from a primary to an auxiliary source of power, microcontroller controlled switchover from a primary to ...
Page 8
... Internal protection for the LTC4412HV is provided to prevent damaging pin currents and excessive internal self heating during a fault condition. These fault conditions can be a result of any LTC4412HV pins shorted to ground power source that is within the pin’s absolute maximum + 20mV (V ), the ...
Page 9
... Should the wall adapter input be applied, the Schottky diode will pull up the SENSE pin, connected to the load, above the battery voltage and the LTC4412HV will turn the MOSFET off. The STAT pin will then sink current indicating an auxiliary input is connected. The battery is now supplying no load current and all the load current flows through the Schottky diode ...
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... LTC4412HV through the CTL input. Back- to-back MOSFETs are used so that the drain-source diode will not power the load when the MOSFET is turned off (dual MOSFETs in one package are commercially available) ...
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... Because the SENSE pin is grounded, the LTC4412HV will apply maximum clamped gate drive voltage to the MOSFET. When the CTL pin is a logical high, the LTC4412HV will turn off the MOSFET by pulling its gate voltage up to the supply input voltage and thus deny power to the load. The MOSFET is connected with its source connected to the power source ...
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... LTC4412HV PACKAGE DESCRIPTIO 0.62 0.95 MAX REF 3.85 MAX 2.62 REF RECOMMENDED SOLDER PAD LAYOUT PER IPC CALCULATOR 0.20 BSC DATUM ‘A’ 0.30 – 0.50 REF NOTE: 1. DIMENSIONS ARE IN MILLIMETERS 2. DRAWING NOT TO SCALE 3. DIMENSIONS ARE INCLUSIVE OF PLATING 4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR 5. MOLD FLASH SHALL NOT EXCEED 0.254mm 6 ...