MAX5976BETE+ Maxim Integrated Products, MAX5976BETE+ Datasheet

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MAX5976BETE+

Manufacturer Part Number
MAX5976BETE+
Description
Hot Swap & Power Distribution 2.7-18V Hot-Swap Controller
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX5976BETE+

Lead Free Status / Rohs Status
Lead free / RoHS Compliant
19-5542; Rev 1; 4/11
The MAX5976A/MAX5976B are integrated solutions for
hot-swap applications requiring the safe insertion and
removal of circuit line cards from a live backplane. The
devices integrate a hot-swap controller, 24mI power
MOSFET, and electronic circuit-breaker protection in a
single package. The ICs are designed for protection of
2.7V to 18V supply voltages.
The devices provide inrush current control and short-
circuit detection during startup. During normal operation,
the devices provide circuit-breaker protection against
overload and short-circuit conditions. The
function disconnects the power to the load if the load
current exceeds the circuit-breaker limit.
are factory-calibrated to deliver accurate overcurrent
protection with Q10% accuracy. During a fault condi-
tion, the MAX5976A enters an autoretry mode while the
MAX5976B latches off. Both versions feature a resistor-
adjustable variable speed circuit-breaker threshold and
overtemperature protection. Additional features include
power-good and fault indicator outputs.
The ICs are available in a 16-pin, 5mm x 5mm, TQFN-
EP package and fully specified over the -40
operating temperature range.
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.
RAID Systems
Storage Bridge Bay
Disk Drive Power
Server I/O Cards
Industrial
_______________________________________________________________ Maxim Integrated Products 1
General Description
2.7V TO 18V
2.7V to 18V, 7A, Hot-Swap Solution
C
IN
Applications
R1
R2
C
REG
circuit-breaker
R
CB
The devices
°
C to +85
T
VS
ON1
REG
CB
IN
MAX5976A
MAX5976B
GND
°
C
OUT
PRESDET
ON2
PG
FAULT
S
S
S
S
S
S
S
S
S
S
S
S
Note: All devices are specified over the -40 ° C to +85 ° C
operating temperature range.
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
MAX5976AETE+
MAX5976BETE+
2.7V to 18V Operating Voltage Range
24mI Internal Power MOSFET
7A Load Current Capability
No Sense Resistor Required
±10% Circuit-Breaker Threshold Accuracy
Adjustable Circuit-Breaker Current
Variable Speed Circuit-Breaker Response
Thermal Protection
Power-Good and Fault Outputs
Latch-Off or Automatic Retry Options
Drive-Present Signal Input
Active-Low and Active-High Enables
V
PART
PRESDET
µP
V
Typical Application Circuit
R
IN
R
R
FAULT
ON2
PG
REMOVABLE CARD
PIN PACKAGE
2.7V TO 6V
16 TQFN-EP*
16 TQFN-EP*
Ordering Information
LOAD
(7A)
MANAGEMENT
Latched Off
Features
Autoretry
FAULT

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MAX5976BETE+ Summary of contents

Page 1

... S Latch-Off or Automatic Retry Options S The devices Drive-Present Signal Input S Active-Low and Active-High Enables S PART ° +85 ° C MAX5976AETE+ MAX5976BETE+ Note: All devices are specified over the -40 ° +85 ° C operating temperature range. +Denotes a lead(Pb)-free/RoHS-compliant package. *EP = Exposed pad. Typical Application Circuit IN OUT PRESDET ...

Page 2

Hot-Swap Solution ABSOLUTE MAXIMUM RATINGS IN to GND ..............................................................-0.3V to +20V CB to GND ..............................................-0. ON1, REG to GND ..................................................-0.3V to +6V OUT, ON2, PRESDET to GND ............... -0.3V to the lower of (V ...

Page 3

Hot-Swap Solution ELECTRICAL CHARACTERISTICS (continued 12V 2V ON1 ON2 PRESDET +25NC.) (Note 3) A PARAMETER SYMBOL OPEN-DRAIN OUTPUTS FAULT, PG Output Low Voltage FAULT, PG ...

Page 4

Hot-Swap Solution (V = 12V 2V 40kω ON1 CB ON2 ON-RESISTANCE vs. TEMPERATURE 12V 100mA LOAD -40 - ...

Page 5

Hot-Swap Solution TOP VIEW PIN NAME 1 GND Ground Supply Voltage Input connected to the drain of the internal 24mI MOSFET. Bypass IN with 2–5 IN 1FF capacitor to ground. Add a transient voltage ...

Page 6

Hot-Swap Solution IN TEMP SENSE V SET REG S UVLO R CLR ON1 1.21V ON2 PRESDET MAX5976A MAX5976B 6 2500X CHARGE PUMP 6 µ CONTROL LOGIC 15 µ REFERENCE LDO GENERATOR ...

Page 7

Hot-Swap Solution Detailed Description Enable Logic and Undervoltage Lockout Threshold The MAX5976A/MAX5976B enable the output as shown in Table 1. The ICs turn on the output only when V is high (V > 1.21V) while ON2 ...

Page 8

Hot-Swap Solution Power-Good Delay The devices feature an open-drain, power-good output that asserts after 16ms (typ), indicating that OUT has reached (0 voltage. IN The devices include a linear regulator that outputs 2.6V ...

Page 9

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 2011 Maxim Integrated Products © ...

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