LM5060Q1 National Semiconductor Corporation, LM5060Q1 Datasheet - Page 2

• Manufacturer Part Number: LM5060Q1
• Description: High-side Protection Controller With Low Quiescent Current
• Manufacturer: National Semiconductor Corporation

www.national.com
Pin
No.
1
2
3
4
5
6
7
8
Connection Diagram
Ordering Information
Automotive Grade (Q) product incorporates enhanced manufacturing and support processes for the automotive market, including defect detection methodologies.
Reliability qualification is compliant with the requirements and temperature grades defined in the AEC Q100 standard. Automotive Grade products are identified
with the letter Q. For more information go to http://www.national.com/automotive.
Pin Descriptions
SENSE
TIMER
Name
UVLO
nPGD
LM5060Q1MMX
OVP
GND
Order Number
LM5060Q1MM
VIN
EN
Protection Comparator
Out Comparator Input
Supply Voltage Input
Under-Voltage Lock-
Input Voltage Sense
Timing capacitor
Circuit ground
Over-Voltage
Enable Input
Description
Fault Status
Input
A constant current sink (16 μA typical) at the SENSE pin flows through an external resistor to
set the threshold for fault detection.
The operating voltage range is 5.5V to 65V. The internal power-on-reset (POR) circuit typically
switches to the active state when the VIN pin is greater than 5.1V. A small ceramic bypass
capacitor close to this pin is recommended to suppress noise.
An external resistor divider from the system input voltage sets the Over-Voltage turn-off
threshold. The GATE pin is pulled low when OVP exceeds the typical 2.0V threshold, but the
controller is not latched off. Normal operation resumes when the OVP pin falls below typically
1.76V.
The UVLO pin is used as an input Under-Voltage Lock-Out by connecting this pin to a resistor
divider between input supply voltage and ground. The UVLO comparator is activated when EN
is high. A voltage greater than typically 1.6V at the UVLO pin will release the pull down devices
on the GATE pin and allow the output to gradually rise. A constant current sink (5.5 µA typical)
is provided to guarantee the UVLO pin is low in an open circuit condition.
A voltage less than 0.8V on the EN pin switches the LM5060 to a low current shutdown state.
A voltage greater than 2.0V on the EN pin enables the internal bias circuitry and the UVLO
comparator. The GATE pin pull-up bias is enabled when both EN and UVLO are in the high
state. A constant current sink (6 µA typical) is provided to guarantee the EN pin is low in an
open circuit condition.
An external capacitor connected to this pin sets the V
pin exceeds the 2.0V threshold condition, the LM5060 will latch off the MOSFET and remain
off until either the EN, UVLO or VIN (POR) input is toggled low and then high.
An open drain output. When the external MOSFET V
voltage exceeds the SENSE pin voltage, the nPGD indicator is active (low = no fault).
10 Lead MSOP
10 Lead MSOP
Package Type
10-Lead MINI-SOIC Package (MSOP)
NS Package Number MUB10A
2
NSC Package Drawing
Applications Information
MUB10A
MUB10A
30104202
DS
DS
fault detection delay time. If the TIMER
decreases such that the OUT pin
1000 Units on Tape and Reel
3500 Units on Tape and Reel
Supplied As