19-5025; Rev 1; 9/10
The devices feature an adjustable foldback current limit
and a soft-start that sets the di/dt of the inrush current.
An I
2
C interface configures the part to latch off or auto-
matically restart after the MAX5967B/MAX5967D detect
a current-limit fault.
EL
IM
Applications
PART
TEMP RANGE
-40NC to +85NC
-40NC to +85NC
The controllers have additional features to interrupt the
host when a fault has occurred, provide three general-
purpose outputs, notify when output power is good,
detect insertion of a load card, and power-up either
automatically upon insertion or wait for an I
2
C command
to turn on. The MAX5967B/MAX5967D are available in
a 24-pin TQFN-EP package and are specified over the
-40NC to +85NC temperature range.
IN
PIN-PACKAGE
24 Thin QFN-EP*
24 Thin QFN-EP*
The MAX5967B/MAX5967D hot-swap controllers allow
a board to be safely inserted and removed from a live
backplane. The devices are pin compatible with the
LTC4215-1 (MAX5967B) and LTC4215-3 (MAX5967D).
Using an external n-channel pass transistor, the board
supply voltage and inrush current are ramped up at an
adjustable rate. An I
2
C interface and on-board ADC
allow for monitoring of load current, voltage, and fault
status.
S
Allows Safe Insertion into Live Backplane
S
Pin Compatible with the LTC4215-1 (MAX5967B)
and LTC4215-3 (MAX5967D)
S
I
2
C/SMBus™ Interface
S
2.9V to 15V Wide Operating Voltage Range
S
di/dt-Controlled Soft-Start
S
Three General-Purpose Outputs
S
High-Side Drive for External n-Channel MOSFET
S
No External Gate Capacitor Required
S
Input Overvoltage/Undervoltage Protection
S
Optional Latchoff or Autoretry After Faults
S
Inrush Current Limit with Foldback
S
Available in 24-Pin (4mm x 5mm) TQFN Package
A
40ms/div
S
8-Bit ADC Monitors Current and Voltage
Live Board Insertion
Computers, Servers
Electronic Circuit Breakers
Platform Management
PR
Typical Application Circuits and Pin Configuration appear at
end of data sheet.
Ordering Information
OVERCURRENT TIMEOUT
DELAY (µs)
20
500
MAX5967BETG+
MAX5967DETG+
+Denotes
a lead(Pb)-free/RoHS-compliant package.
*EP
= Exposed pad.
SMBus is a trademark of Intel Corp.
_______________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
R
V
DD
10V/div
INRUSH
CURRENT
2A/div
V
OUT
10V/div
C
L
= 12,000
µ
F
General Description
Startup Waveform
Y
Features
V
GPI01
10V/div
(5kI PULLUP TO V
DD
)
Hot-Swap Controllers with
I
2
C-Compatible Monitoring
MAX5967B/MAX5967D
DIY/Open Source Hardware
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