lm5067mmx-2 National Semiconductor Corporation, lm5067mmx-2 Datasheet - Page 2

• Manufacturer Part Number: lm5067mmx-2
• Description: Negative Hot Swap / Inrush Current Controller With Power Limiting
• Manufacturer: National Semiconductor Corporation

www.national.com
Connection Diagrams
Ordering Information
Pin Descriptions
Pin
10
Order Number
LM5067MMX-1
LM5067MMX-2
LM5067SDX-1
LM5067SDX-2
#
1
2
3
4
5
6
7
8
9
LM5067MM-1
LM5067MM-2
LM5067SD-1
LM5067SD-2
SENSE Current sense input The voltage across the current sense resistor (R
TIMER
UVLO/
Name
OVLO Over-voltage lockout An external resistor divider from the system input voltage sets the over-voltage turn-off
GATE
PWR
PGD
VCC
VEE
OUT
EN
Positive supply input Connect to system ground through a resistor. Connect a bypass capacitor to VEE. The
Gate drive output
Timing capacitor
Output feedback
Negative supply
Power limit set
Under-voltage
Description
Power Good
indicator
lockout
10-Lead MSOP
input
Fault Response
Auto Restart
Auto Restart
Auto Restart
Auto Restart
Top View
Latch Off
Latch Off
Latch Off
Latch Off
Applications Information
voltage from VCC to VEE is nominally 13V set by an internal zener diode.
An external resistor divider from the system input voltage sets the under-voltage turn-on
threshold. The enable threshold at the pin is 2.5V above VEE. An internal 22 µA current
source provides hysteresis. This pin can be used for remote enable and disable.
threshold. The disable threshold at the pin is 2.5V above VEE. An internal 22 µA current
source provides hysteresis.
An external resistor at this pin, in conjunction with the current sense resistor (R
maximum power dissipation in the external series pass MOSFET.
Connect to the system negative supply voltage (typically -48V).
An external capacitor at this pin sets the insertion time delay and the fault timeout period.
The capacitor also sets the restart timing of the LM5067-2.
voltage across R
Connect to the external N-channel MOSFET’s gate.
Connect to the external MOSFET’s drain. Internally used to determine the MOSFET V
voltage for power limiting, and to control the PGD output pin.
An open drain output capable of sustaining 80V when off. When the external MOSFET
V
increases above
DS
decreases below 1.23V the PGD pin switches high. When the external MOSFET V
30030902
Package Type
MSOP-10
LLP-10
S
≊
reaches 50 mV the load current is limited and the fault timer activates.
2.5V the PGD pin switches low.
2
NSC Package Drawing
MUB10A
SDA10A
S
) is measured from VEE to this pin. If the
10-Lead LLP
Top View
1000 Units on Tape and Reel
3500 Units on Tape and Reel
1000 Units on Tape and Reel
3500 Units on Tape and Reel
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Supplied As
30030903
S
), sets the
DS
DS