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LTC4367 数据表(PDF) 1 Page - Linear Technology |
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LTC4367 数据表(HTML) 1 Page - Linear Technology |
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1 / 6 page  1 dc2417af DEMO MANUAL DC2417A DESCRIPTION LTC4367 100V Overvoltage, Undervoltage and Reverse Supply Protection Controller Demonstration circuit 2417A is intended to demonstrate the performance of the LTC4367 100V overvoltage (OV), undervoltage(UV),andreversesupplyprotectioncontroller. This controller protects circuits from input voltages that may be too high, too low or negative. It operates by controlling the gates of two back-to-back connected N-channel MOSFETs to keep the output in a safe range. The UV and OV setpoints are configured by the resistive divider on the UV and OV inputs. Asserting the SHDN pin disables the MOSFETs and places the LTC4367 in a low current shutdown state. The FAULT pin asserts when the controller is in the shutdown mode or when the input voltage is outside of the UV/OV window. The LTC4367 L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. PERFORMANCE SUMMARY can withstand DC voltages between –40V and 100V and has an operating range of 2.5V to 60V. The DC2417A includes the LTC4367, two back-to-back connected power MOSFETs, three jumpers and three LEDs to indicate the input and output voltages and the FAULT pin signal. The DC2417A is assembled in two options: DC2417A-A, which is populated with LTC4367, and DC2417A-B, which uses LTC4367-1. Design files for this circuit board are available at http://www.linear.com/demo/DC2417A Specifications are at TA = 25°C SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VIN Input Voltage Range Operating Range Protection Range 2.5 –40 60 100 V V VIN(UVLO) Input Supply Undervoltage Lockout VIN Rising 1.8 2.2 2.4 V IVIN Input Supply Current; On Off SHDN = 2.5V SHDN = 0V, VIN = VOUT 30 5 90 20 µA µA IVIN(R) Reverse Input Supply Current VIN = –40V, VOUT = 0V –1.5 –2 mA ∆VGATE Gate Drive (GATE – VOUT) VIN = VOUT = 5.0V, IGATE = 0μA, –1μA VIN = VOUT = 12V to 34V, IGATE = –1µA 7.2 10 8.7 11 10.8 12.2 V V IGATE(UP) Gate Pull-Up Current GATE = 15V, VIN = VOUT = 12V –20 –35 –50 µA IGATE(FAST) Gate Fast Pull-Down Current GATE = 20V, VIN = VOUT = 12V 30 60 90 mA IGATE(SLOW) Gate Slow Pull-Down Current GATE = 20V, VIN = VOUT = 12V 50 90 160 µA VUV UV Input Threshold Voltage UV Falling 492.5 500 507.5 mV VOV OV Input Threshold Voltage OV Rising 492.5 500 507.5 mV tGATE(FAST) Gate Fast Turn-Off Delay CGATE = 2.2nF, UV or OV Fault 2 4 µs tFAULT OV, UV Fault Propagation Delay Overdrive = 50mV, VIN = VOUT = 12V 1 2 µs VSHDN SHDN Input Threshold SHDN Falling 0,4 0.75 1.2 V VUV_BOARD Board UV Range 5.75 5.97 6.17 V VOV_BOARD Board OV Range 14.44 14.95 15.47 V |
类似零件编号 - LTC4367 |
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类似说明 - LTC4367 |
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