MAX5961_09 Datasheet, PDF (1/2 Pages) Maxim Integrated Products – 0 to 16V, Quad, Hot-Swap Controller with 10-Bit Current and Voltage Monitor

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Maxim > Products > [Hot-Swap and Power Switching]
MAX5961
0 to 16V, Quad, Hot-Swap Controller with 10-Bit Current and Voltage Monitor
Industry's First Quad, Hot-Swap Controller Operates Down to 0V and Integrates a Voltage
and Current Monitor
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Status
Active: In Production.
Description
The MAX5961 0 to 16V, quad, hot-swap controller provides complete protection for systems with
up to four distinct supply voltages. The device allows the safe insertion and removal of circuit
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cards into live backplanes. The MAX5961 is an advanced hot-swap controller that monitors
voltage and current with an internal 10-bit ADC. The device provides two levels of overcurrent circuit-breaker protection; a fast-
trip threshold for a fast turn-off, and a lower slow-trip threshold for a delayed turn-off. The maximum overcurrent circuit-
breaker threshold range is set independently for each channel with a trilevel input (ILIM_) or by programming though an I²C
interface.
The internal 10-bit ADC is multiplexed to monitor the output voltage and current of each hot-swap channel. The total time to
cycle through all the eight measurements is 100µs (typ). Each 10-bit value is stored in an internal circular buffer so that 50 past
samples of each signal can be read back through the I²C interface at any time or after a fault condition.
The MAX5961 can be configured as four independent hot-swap controllers, hot-swap controllers operating in pairs, or as a group
of four hot-swap controllers.
The device also includes five digital comparators per hot-swap channel to implement overcurrent warning, two levels of
overvoltage detection, and two levels of undervoltage detection. The limits for overcurrent, overvoltage, and undervoltage are
user-programmable. When any of the measured values violates the programmable limits, an external active-low ALERT signal is
asserted. In addition to the active-low ALERT signal, depending on the selected operating mode, the MAX5961 can deassert a
power-good signal and/or turn-off the external MOSFET.
The MAX5961 is available in a 48-pin thin QFN package and operates over the -40°C to +85°C extended temperature range.
An evaluation kit is available: MAX5961EVKIT
Key Features
z Four Independent Hot-Swap Controllers Protect from 0 to 16V (Provided
IN ≥ 2.7V)
z 10-Bit ADC Monitors Voltage and Current of Each Channel
z Circular Buffer Stores 5ms of Current and Voltage Measurements
z Four Independent Internal Charge Pumps Generate n-Channel MOSFET
Gate Drives
z Internal 500mA Gate Pulldown Current for Fast Shutdown
z VariableSpeed/BiLevel™ Circuit-Breaker Protection
z Alert Output Indicates Undervoltage Warning, Undervoltage Critical,
Overvoltage Warning, Overvoltage Critical, and Overcurrent Warning for
Each Channel
z Independent Power-Good Outputs
z Autoretry or Latched Fault Management
z 400kHz I²C Interface
z 7mm x 7mm 48-Pin TQFN Package
Applications/Uses
z ASICs
z Disk Drives
z PCI Express® Hot Plug
z Servers
z Storage Systems
Key Specifications: Hot Swap Controllers
Part
Number
V_IN V_IN
(V) (V)
Low
Volt.
High
Volt.
Voltage
Polarity
Type
http://www.maxim-ic.com/quick_view2.cfm/qv_pk/5853
Fault Condition Control
Channels Package/Pins
Price
See
11/9/2009