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SMH4042A

Features: Full Voltage Control for Hot Swap Applications 15V High Side Driver Generation Allows use of Low On Resistance N-Channel FETs Under-Voltage Lockout Electronic Circuit Breakers Card Insertion Detection Host VCC Detection Card Voltage SequencingFlexible Reset Control Low Voltage Resets Hos...

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SMH4042A: Features: Full Voltage Control for Hot Swap Applications 15V High Side Driver Generation Allows use of Low On Resistance N-Channel FETs Under-Voltage Lockout Electronic Circuit Breakers Card Inserti...

SMH4042A Data Sheet

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Part Number:
SMH4042A
Supply Ability:
5000

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  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

 Full Voltage Control for Hot Swap Applications
    15V High Side Driver Generation Allows use of Low On Resistance N-Channel FETs
    Under-Voltage Lockout
    Electronic Circuit Breakers
    Card Insertion Detection
    Host VCC Detection
    Card Voltage Sequencing
 Flexible Reset Control
    Low Voltage Resets
    Host Reset Filtering
    Soft Reset
 Adjustable Power On Slew Rate
 Suppoprts Mixed Voltage Cards
 Two Wire I2C Serial Data Interface
   4k-Bit E2PROM Memory


Pinout

Connection Diagram


Specifications

Temperature Under Bias .................................................................................. 55°C to 125°C
Storage Temperature ....................................................................................... 65°C to 150°C
Lead Solder Temperature (10 secs) ............................................................................... 300 °C
Terminal Voltage with Respect to GND:
                   CARD_3V_MON, CARD_5V_MON,
                   HST_3V_MON, SGNL_VLD#, HEALTHY#, LOCAL_PCI_RET#, VCC ........................ 7V
                   VGATE3, VGATE5, DRVREN# .............................................................................. 16V
                   RESET .................................................................................................... VCC + 0.7V
                   All Others .............................................................................................. VCC + 0.7V
Junction Temperature........................................................................................................150°C
ESD Rating per JEDEC.......................................................................................2000V
Latch-Up testing per JEDEC...............................................................................+/- 100mA


Description

The SMH4042A is a fully integrated hot swap controller that provides complete power control for add-in cards ranging in use for basic hot swap systems to high availability CompactPCI systems. It detects proper insertion of the card and senses valid supply voltage levels at the backplane. Utilizing external low on-resistance N-channel MOSFETs, card power is ramped by two high-side driver outputs that are slew-rate limited at 250V/s.

The SMH4042A continuously monitors the host supplies, the add-in card supplies and the add-in card current. If the SMH4042A detects the current is higher than the programmed value it will shut down the MOSFETs and issue a fault status back to the host.

The SMH4042A internal 512 * 8 E2PROM can be used as configuration memory for the individual card or as general purpose memory. The proprietary Data Download mode provides a more direct interface to the E2PROM, simplifying access by the add-in card's controller or ASIC.

SMH4042A Programming of configuration, control and calibration values by the user can be simplified with the interface adapter and Windows GUI software obtainable from Summit Microelectronics.




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