LTC4354CDDB LINER [Linear Technology], LTC4354CDDB Datasheet
LTC4354CDDB
Available stocks
Related parts for LTC4354CDDB
LTC4354CDDB Summary of contents
Page 1
FEATURES ■ Controls N-Channel MOSFETs ■ Replaces Power Schottky Diodes ■ 1µs Turn-off Time Limits Peak Fault Current ■ 80V Operation ■ Smooth Switchover Without Oscillation ■ No Reverse DC Current ■ Fault Output ■ Selectable Fault Thresholds ■ Available ...
Page 2
... Consult LTC Marketing for parts specified with wider operating temperature ranges Operating Temperature Range LTC4354C ............................................... 0°C to 70°C LTC4354I ............................................. –40°C to 85°C + 0.3V CC Storage Temperature Range ................. –65°C to 150°C Lead Temperature (Soldering, 10 sec.)................. 300° ORDER PART NUMBER LTC4354CDDB DA 1 LTC4354IDDB DDB8 PART GA 4 MARKING ...
Page 3
ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T SYMBOL PARAMETER V Internal Shunt Regulator Voltage Z ∆V Internal Shunt Regulator Load Regulation Z V Operating Voltage Range Supply Current GATE Pins Output High ...
Page 4
LTC4354 W U TYPICAL PERFOR A CE CHARACTERISTICS Shunt Regulator Voltage vs Input Current 12.0 11.5 11.0 10.5 10 (mA) CC 4354 G01 Source Drain Sense Voltage vs Temperature ...
Page 5
CTIO S DA, DB (Pins 1, 8): Drain Voltage Sense Inputs. These pins sense source-drain voltage drop across the N-Chan- nel MOSFETs. An external resistor is recommended to protect these pins from transient voltages exceeding ...
Page 6
LTC4354 DIAGRA 400mV V – –100mV V GATE U OPERATIO High availability systems often employ parallel-connected power supplies or battery feeds to achieve redundancy and enhance system reliability. ORing diodes have ...
Page 7
U U APPLICATIO S I FOR ATIO Input Power Supply The power supply for the device is derived from –48_RTN through an external current limiting resistor (R internal shunt regulator clamps the voltage at V 11V. A 1µF decoupling capacitor ...
Page 8
LTC4354 U U APPLICATIO S I FOR ATIO System Power Supply Failure LTC4354 automatically supplies load current from the system supply with the more negative input potential. If this supply is shorted to the return side, a large reverse current ...
Page 9
U U APPLICATIO S I FOR ATIO The worst case power dissipation − 315 . Choose a 12k 0.5W resistor or use ...
Page 10
LTC4354 U U APPLICATIO S I FOR ATIO –48V_RTN V = –48V –48V B GND V = –12V –12V –36V to –72V/20A High Current with Parallel FETs R IN1 10k ...
Page 11
PACKAGE DESCRIPTIO 0.61 ±0.05 (2 SIDES) 0.675 ±0.05 2.50 ±0.05 1.15 ±0.05 0.25 ± 0.05 0.50 BSC 2.20 ±0.05 (2 SIDES) RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS NOTE: 1. DRAWING CONFORMS TO VERSION (WECD-1) IN JEDEC PACKAGE OUTLINE M0-229 2. ...
Page 12
LTC4354 U TYPICAL APPLICATIO –48V_RTN V = –48V –48V B RELATED PARTS PART NUMBER DESCRIPTION LT1640AH/LT1640AL Negative High Voltage Hot Swap™ Controllers in SO-8 LT4250 –48V Hot Swap Controller LTC4251/LTC4251-1 –48V Hot Swap Controllers in SOT-23 LTC4251-2 ...