LM5060 Datasheet, PDF (1/24 Pages) National Semiconductor (TI) – High-Side Protection Controller with Low Quiescent Current

LM5060
September 22, 2010
High-Side Protection Controller with Low Quiescent
Current
General Description
The LM5060 high-side protection controller provides intelli-
gent control of a high-side N-Channel MOSFET during normal
on/off transitions and fault conditions. In-rush current is con-
trolled by the nearly constant rise time of the output voltage.
A power good output indicates when the output voltage reach-
es the input voltage and the MOSFET is fully on. Input Under-
Voltage Lock-Out, with hysteresis, is provided as well as
programmable input Over-Voltage Protection. An enable in-
put provides remote On / Off control. The programmable
Under-Voltage Lock-Out input can be used as second enable
input for safety redundancy. A single capacitor programs the
initial start-up V_GS fault detection delay time, the transition
V_DS fault detection delay time, and the continuous Over-Cur-
rent V_DS fault detection delay time. When a detected fault
condition persists longer than the allowed fault delay time, the
MOSFET is latched off until either the Enable input or the Un-
der-Voltage Lock-Out input is toggled low and then high.
Features
■ ^{Available in Automotive grade / AEC Q-100}
■ ^{Wide operating input voltage range: +5.5V to +65V}
■ ^{Less than 15 µA quiescent current in disabled mode}
■ ^{Controlled output rise time for safe connection of}
capacitive loads
■ ^{Charge pump gate driver for external N-Channel MOSFET}
■ ^{Adjustable Under-Voltage Lock-Out (UVLO) with}
hysteresis
■ ^{UVLO serves as second enable input for systems}
requiring safety redundancy
■ ^{Programmable fault detection delay time}
■ ^{MOSFET latched off after load fault is detected}
■ ^{Active low open drain POWER GOOD (nPGD) output}
■ ^{Adjustable input Over-Voltage Protection (OVP)}
■ ^{Immediate restart after Over-Voltage shutdown}
Applications
■ ^{Automotive Body Electronics}
■ ^{Industrial Power Distribution and Control}
Package
■ ^{10-Lead MINI-SOIC}
Typical Application
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