MP5010B – 3V-18V, 1A-5A PROGRAMMABLE CURRENT LIMIT SWITCH
The Enable/Fault line must remain above the
MID level for the output to turn ON.
The fault flag is an internal flip-flop that can be
set or reset under the following conditions:
1.
2.
3.
4.
Thermal Shutdown: set fault flag
Under-Voltage: reset fault flag
LOW on Enable/Fault pin: reset fault
flag
MID on Enable/Fault pin: no effect
Internal action
Limit current
Output turns OFF
Limit output voltage
Shutdown. The part
is latched OFF until
a UVLO or
externally driven to
ground.
Given a fault, the Enable/Fault pin is driven to
MID.
There are 4 types of faults, and each fault has a
direct and indirect effect on the Enable/Fault pin
and the internal fault flag. In a typical
application there are one or more of the
MP5010B chips in a system. The Enable/Fault
lines are typically be connected together.
Table 1—Fault Function Influence in Application
Fault description
Short/Over
Current
Under Voltage
Over Voltage
Thermal
Shutdown
Effect on Fault Pin
none
Internally drives
Enable/Fault pin to
logic LOW
None
Internally drives
Enable/Fault pin
to MID
Effect on Flag
none
Flag is reset
None
Effect on secondary Part
none
Disables secondary output,
and resets fault flag.
None
Disables secondary part
output.
Flag is Set
MP5010B Rev. 1.0
www.MonolithicPower.com
4/3/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
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