Connection Diagram
30086702
Top View
10-Lead MSOP
Ordering Information
Order Number
Fault Response
Latch Off
Package Type
NSC Package
Drawing
Supplied As
LM25069PMME-1
LM25069PMM-1
LM25069PMMX-1
LM25069PMME-2
LM25069PMM-2
LM25069PMMX-2
250 Units on Tape
and Reel
Latch Off
1000 Units on
Tape and Reel
Latch Off
3500 Units on
Tape and Reel
MSOP-10
MUB10A
Auto Restart
Auto Restart
Auto Restart
250 Units on Tape
and Reel
1000 Units on
Tape and Reel
3500 Units on
Tape and Reel
Pin Descriptions
Pin #
Name
Description
Applications Information
1
SENSE
Current sense input
The voltage across the current sense resistor (RS) is measured from VIN to this
pin. If the voltage across RS reaches 50mV the load current is limited and the fault
timer activates.
2
3
VIN
Positive supply input
A small ceramic bypass capacitor close to this pin is recommended to suppress
transients which occur when the load current is switched off.
UVLO/EN Under-voltage lockout An external resistor divider from the system input voltage sets the under-voltage
turn-on threshold. An internal 20 µA current source provides hysteresis. The
enable threshold at the pin is 1.17V. This pin can also be used for remote
shutdown control.
4
OVLO
Over-voltage lockout An external resistor divider from the system input voltage sets the over-voltage
turn-off threshold. An internal 20 µA current source provides hysteresis. The
disable threshold at the pin is 1.16V.
5
6
GND
Circuit ground
TIMER
Timing capacitor
An external capacitor connected to this pin sets the insertion time delay and the
Fault Timeout Period. The capacitor also sets the restart timing of the LM25069-2.
7
8
PWR
PGD
Power limit set
An external resistor connected to this pin, in conjunction with the current sense
resistor (RS), sets the maximum power dissipation allowed in the external series
pass MOSFET.
Power Good indicator An open drain output. When the external MOSFET VDS decreases below 1.3V,
the PGD indicator is active (high). When the external MOSFET VDS increases
above 1.9V the PGD indicator switches low.
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2
NSC [ National Semiconductor ]
