lm25069pmmx-2 National Semiconductor Corporation, lm25069pmmx-2 Datasheet - Page 2

• Manufacturer Part Number: lm25069pmmx-2
• Description: Positive Low Voltage Power Limiting Hot Swap Controller
• Manufacturer: National Semiconductor Corporation

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Connection Diagram
Ordering Information
Pin Descriptions
Pin #
10
1
2
3
4
5
6
7
8
9
Order Number
LM25069PMME-1
LM25069PMM-1
LM25069PMMX-1
LM25069PMME-2
LM25069PMM-2
LM25069PMMX-2
UVLO/EN
SENSE
TIMER
OVLO
Name
GATE
GND
PWR
PGD
OUT
VIN
Under-voltage lockout
Power Good indicator
Positive supply input
Over-voltage lockout
Current sense input
Gate drive output
Timing capacitor
Output feedback
Power limit set
Circuit ground
Description
Fault Response
Latch Off
Latch Off
Latch Off
Auto Restart
Auto Restart
Auto Restart
Applications Information
The voltage across the current sense resistor (R
pin. If the voltage across R
timer activates.
A small ceramic bypass capacitor close to this pin is recommended to suppress
transients which occur when the load current is switched off.
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.
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.
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.
An external resistor connected to this pin, in conjunction with the current sense
resistor (R
pass MOSFET.
An open drain output. When the external MOSFET V
the PGD indicator is active (high). When the external MOSFET V
above 1.9V the PGD indicator switches low.
Connect to the output rail (external MOSFET source). Internally used to determine
the MOSFET V
Connect to the external MOSFET’s gate. This pin's voltage is limited at 19.5V
above ground.
10-Lead MSOP
S
Top View
), sets the maximum power dissipation allowed in the external series
DS
2
Package Type
voltage for power limiting, and to control the PGD indicator.
MSOP-10
S
reaches 50mV the load current is limited and the fault
NSC Package
Drawing
30086702
MUB10A
S
) is measured from VIN to this
DS
Supplied As
Coming Soon
Coming Soon
Coming Soon
250 Units on Tape
and Reel
1000 Units on
Tape and Reel
3500 Units on
Tape and Reel
decreases below 1.3V,
DS
increases