|
|
|
MAX5970
0V to 16V, Dual Hot-Swap Controller with 10-Bit Current and Voltage Monitor and 4 LED Drivers
Industry's First Dual, Hot-Swap Controller Operates Down to 0V and Integrates a Voltage and Current Monitor
|
Status
Active: In Production.
Description
The MAX5970 dual hot-swap controller provides complete protection for systems with two supply voltages from 0V to +16V. The MAX5970 includes four programmable LED outputs. The two hot-swap channels can be configured to operate as independent hot-swap controllers, or as a pair operating together so that both channels shut down if either channel experiences a fault.
The MAX5970 provides two programmable 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 logic input IRNG_, or by programming though the I²C interface.
The MAX5970 is an advanced hot-swap controller that monitors voltage and current with an internal 10-bit ADC which is continuously multiplexed to convert the output voltage and current of both hot-swap channels at 10ksps. Each 10-bit sample 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 device includes five user-programmable digital comparators per hot-swap channel to implement overcurrent warning and two levels of overvoltage/undervoltage detection. When any of the measured values violates the programmable limits, an external active-low ALERT output is asserted. In addition to the active-low ALERT signal, the MAX5970 can be programmed to deassert the power-good signal and/or turn off the external MOSFET.
The MAX5970 features four I/Os that can be independently configured as general-purpose inputs/outputs (GPIOs) or as open-drain LED drivers with programmable blinking. These four I/Os can be configured for any mix of LED driver or GPIO function.
The MAX5970 is available in a 36-pin thin QFN-EP package and operates over the -40°C to +85°C extended temperature range.
|
|
Data Sheet
|
An evaluation kit is available: MAX5970EVKIT
Key Features
- Two Independent Hot-Swap Controllers Operate from 0V to +16V
- 10-Bit ADC Monitors Voltage and Current of Each Channel
- Circular Buffers Store 5ms of Current and Voltage Measurements
- Two Independent Internal Charge Pumps Generate n-Channel MOSFET Gate Drives
- Internal 500mA Gate Pulldown Current for Fast Shutdown
- VariableSpeed/BiLevel™ Circuit-Breaker Protection
- Independent Precision-Voltage Enable Inputs
- Alert Output Indicates Fault and Warning Conditions
- Independent Power-Good Outputs
- Independent Fault Outputs
- Four Open-Drain Outputs Sink 25mA to Directly Drive LEDs
- Programmable LED Flashing Function
- Autoretry or Latched Fault Management
- 400kHz I²C Interface
- Small 6mm x 6mm, 36-Pin TQFN-EP Package
|
|
Applications/Uses
- Blade Servers
- Disk Drives/DASD/Storage Systems
- Single PCI Express® Hot-Plug Slot
- Soft-Switch for ASICs, FPGAs, and Microcontrollers with Independent Core and I/O Voltages
|
|
|
|
Key Specifications:
| Hot Swap Controllers |
| Part Number |
VIN
(V) |
VIN
(V) |
Circuit Breaker/ Current Limit |
Circuit Breaker/Current Limit Threshold
(mV) |
Fault Condition Control |
Channels |
Positive/Negative Rail |
Package/Pins |
Budgetary Price |
| min |
max |
See Notes |
| MAX5970 |
2.7 |
16 |
Circuit Breaker |
25 to 100 |
Programmable |
2 |
Positive |
|
$6.55 @1k |
|
See All Hot Swap Controllers (53)
|
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
|
|
Diagram
Typical Application Circuit
Application Notes
Product Guides
Reliability Reports
| Show FIT data for: |
|
| Request Reliability Report for: |
|
Software/Models
Ordering Information
|
Part Number
|
Free
Sample |
Buy |
Status
|
Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
|
Temp |
RoHS/Lead-Free?
Materials Analysis
|
| MAX5970ETX+
|
|
|
Active |
TQFN;36 pin;37.2 mm²
Outline Drawing:21-0141 (PDF)
Land Pattern: 90-0050 (PDF)
Use pkgcode/variation: T3666+3*
|
-40°C to +85°C
|
RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX5970ETX+T
|
|
|
Active |
TQFN;36 pin;37.2 mm²
Outline Drawing:21-0141 (PDF)
Land Pattern: 90-0050 (PDF)
Use pkgcode/variation: T3666+3*
|
-40°C to +85°C
|
RoHS/Lead-Free: Lead Free
Materials Analysis |
Notes:
- Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
- Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
- Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
- * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
|
Similar Products by Function
Similar Products by Application
| Computers: Desktops and Workstations > Hot Swap |
Evaluation Kits
Products with Similar Part Numbers
More Information
Didn't Find What You Need?
Information Index
Document Ref.: 19-5128
Rev 0;
2010-02-23
This page last modified: 2010-02-23
|
|
|
Download
E-Mail