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LM9061M Datasheet

  • LM9061M

  • SINGLE MOSFET DRIVER|BIPOLAR|SOP|8PIN|PLASTIC

  • 15頁(yè)

  • ETC

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LM9061 Power MOSFET Driver with Lossless Protection
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
ON/OFF input controls the output gate drive voltage. In the
ON state, the charge pump voltage, which is well above the
available V
CC
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 碌A(chǔ) current sink discharges the gate capacitances of the
MOSFET for a gradual turn-OFF characteristic to minimize
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 (V
DS
) across the power de-
vice is continually monitored and compared against an ex-
ternally 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 circuitry.
Should the V
DS
voltage, due to excessive load current,
exceed the threshold voltage, the output is latched OFF in a
more gradual fashion (through a 10 碌A(chǔ) output current sink)
after programmable delay time interval.
Designed for the automotive application environment the
LM9061 has a wide operating temperature range of 鈭?0藲C to
+125藲C, remains operational with V
CC
up to 26V, and can
withstand 60V power supply transients. The LM9061 is avail-
able in an 8-pin small outline package, and an 8-pin dual
in-line package.
Features
n
Built-in charge pump for gate overdrive of high side
drive applications
n
Lossless protection of the power MOSFET
n
Programmable MOSFET protection voltage
n
Programmable delay of protection latch-OFF
n
Fast turn-ON (1.5 ms max with gate capacitance of
25000 pF)
n
Undervoltage shut OFF with V
CC
<
7V
n
Overvoltage shut OFF with V
CC
>
26V
n
Withstands 60V supply transients
n
CMOS logic compatible ON/OFF control input
n
Surface mount and dual-in-line packages available
Applications
n
n
n
n
n
Valve, relay and solenoid drivers
Lamp drivers
DC motor PWM drivers
Logic controlled power supply distribution switch
Electronic circuit breaker
Typical Application
Connection Diagrams
01231703
Top View
Order Number LM9061M
See NS Package Number M08A
01231701
01231702
Top View
Order Number LM9061N
See NS Package Number N08E
漏 2001 National Semiconductor Corporation
DS012317
www.national.com

LM9061M 產(chǎn)品屬性

  • National Semiconductor (TI)

  • High Side

  • 26 V

  • 7 V

  • 40 mA

  • + 125 C

  • SMD/SMT

  • SOIC-8 Narrow

  • Tube

  • Non-Inverting

  • - 40 C

  • 1

  • 1

  • 95

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