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LM9061 Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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LM9061 Datasheet(HTML) 1 Page - National Semiconductor (TI) |
1 / 14 page TLH12317 April 1995 LM9061 Power MOSFET Driver with Lossless Protection General Description The LM9061 is a charge-pump device which provides the gate drive to any size external power MOSFET configured as a high side driver or switch A CMOS logic compatible ONOFF input controls the output gate drive voltage In the ON state the charge pump voltage which is well above the available VCC supply is directly applied to the gate of the MOSFET A built-in 15V zener clamps the maximum gate to source voltage of the MOSFET When commanded OFF a 110 mA current sink discharges the gate capacitances of the MOSFET for a gradual turn-OFF characteristic to mini- mize the duration of inductive load transient voltages and further protect the power MOSFET Lossless protection of the power MOSFET is a key feature of the LM9061 The voltage drop (VDS) across the power device is continually monitored and compared against an externally programmable threshold voltage A small current sensing resistor in series with the load which causes a loss of available energy is not required for the protection circuit- ry Should the VDS voltage due to excessive load current exceed the threshold voltage the output is latched OFF in a more gradual fashion (through a 10 mA output current sink) after a programmable delay time interval Designed for the automotive application environment the LM9061 has a wide operating temperature range of b40 C to a125 C remains operational with VCC up to 26V and can withstand 60V power supply transients The LM9061 is available in an 8-pin small outline package and an 8-pin dual in-line package Features Y Built-in charge pump for gate overdrive of high side drive applications Y Lossless protection of the power MOSFET Y Programmable MOSFET protection voltage Y Programmable delay of protection latch-OFF Y Fast turn-ON (15 ms max with gate capacitance of 25000 pF) Y Undervoltage shut OFF with VCC k 7V Y Overvoltage shut OFF with VCC l 26V Y Withstands 60V supply transients Y CMOS logic compatible ONOFF control input Y Surface mount and dual in-line packages available Applications Y Valve relay and solenoid drivers Y Lamp drivers Y DC motor PWM drivers Y Logic controlled power supply distribution switch Y Electronic circuit breaker Typical Application TLH12317 – 1 Connection Diagrams TLH12317 – 3 Top View Order Number LM9061M See NS Package Number M08A TLH12317 – 2 Top View Order Number LM9061N See NS Package Number N08E C1995 National Semiconductor Corporation RRD-B30M115Printed in U S A |
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