lm25061pmmx-2 National Semiconductor Corporation, lm25061pmmx-2 Datasheet - Page 2

• Manufacturer Part Number: lm25061pmmx-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
UVLO/EN
SENSE
TIMER
Name
GATE
GND
PWR
PGD
OUT
VIN
FB
Order Number
LM25061PMME-1 Latch Off
LM25061PMM-1
LM25061PMMX-1 Latch Off
LM25061PMME-2 Auto Restart
LM25061PMM-2
LM25061PMMX-2 Auto Restart
Under-voltage lockout
Power Good indicator
Positive supply input
Current sense input
Gate drive output
Output feedback
Timing capacitor
Output feedback
Power limit set
Circuit ground
Description
Fault Response
Latch Off
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 output sets the output voltage at which the
PGD pin switches. The threshold at the pin is 1.17V. An internal 22 µA current
source provides hysteresis.
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 LM25061-2.
An external resistor connected to this pin, in conjunction with the current sense
resistor (R
pass MOSFET.
An open drain output. This output is high when the voltages at the FB pin and at
the UVLO pin are above their thresholds.
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.
Package Type
MSOP-10
10-Lead MSOP
S
Top View
), sets the maximum power dissipation allowed in the external series
DS
2
voltage for power limiting.
S
NSC Package
Drawing
MUB10A
reaches 50mV the load current is limited and the fault
30090302
Supplied As
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250 Units on Tape
and Reel
1000 Units on
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3500 Units on
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S
) is measured from VIN to this