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LTC4228CUFD-2 Integrated Circuit Chip Ideal Diode and Hot Swap Controller Auto-Retry 28-Lead QFN

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LTC4228CUFD-2 Integrated Circuit Chip Ideal Diode and Hot Swap Controller Auto-Retry 28-Lead QFN

LTC4228CUFD-2 Integrated Circuit Chip Ideal Diode and Hot Swap Controller Auto-Retry 28-Lead QFN
LTC4228CUFD-2 Integrated Circuit Chip Ideal Diode and Hot Swap Controller Auto-Retry 28-Lead QFN

Large Image :  LTC4228CUFD-2 Integrated Circuit Chip Ideal Diode and Hot Swap Controller Auto-Retry 28-Lead QFN

Product Details:
Place of Origin: CN
Brand Name: Original Factory
Certification: Lead free / RoHS Compliant
Model Number: LTC4228CUFD-2
Payment & Shipping Terms:
Minimum Order Quantity: 10
Price: Contact for Sample
Packaging Details: Standard package
Delivery Time: 3-5 work days
Payment Terms: T/T
Supply Ability: 10000 Pieces per Day
Contact Now

LTC4228CUFD-2 Integrated Circuit Chip Ideal Diode and Hot Swap Controller Auto-Retry 28-Lead QFN

Description
Highlight:

LTC4228CUFD-2 Integrated Circuit Chip Ideal Diode and Hot Swap Controller Auto-Retry 28-Lead QFN

,

LTC4228

LTC4228CUFD-2 28-Lead QFN Integrated Circuit Chip Dual Ideal Diode and Hot Swap Controller with Auto-Retry

The LTC4228CUFD-2 combines ideal diode and Hot Swap functions for two power rails by controlling two external N-channel MOSFETs in each rail. MOSFETs used as ideal diodes replace two high power Schottky diodes and their heat sinks, which saves both power and board area.

The Hot Swap MOSFETs limit inrush current so a board can be inserted into and removed from a live backplane safely. The device regulates the forward voltage drop across the external MOSFET and sense resistor to keep current transfer between the two supplies smooth and free from oscillation.

The input range is 2.9 V to 18 V. A fast current limit responds in 1 microsecond or less, the circuit breaker trip point is 50 mV typical across the sense resistor, and the fault delay is set with a capacitor on the TMR pin. Ideal diode turn-on and turn-off take 0.5 microseconds, which keeps load droop small during switchover.

Status, fault and power good outputs report the state of each rail, and the two rails can be switched independently. This LTC4228-2 version retries automatically after a fault, while the LTC4228-1 version latches off until it is reset.

The LTC4228CUFD-2 is the commercial grade part in the 28-Lead Plastic QFN (4mm x 5mm) package, specified from 0 to 70 degrees C. It is RoHS compliant and lead free, and every order ships with full traceability. Samples and volume pricing are available on request.

Key Features
  • Power path and inrush current control for redundant supplies
  • Low loss replacement for power Schottky diodes
  • Protects output voltage from input brownouts
  • Allows safe hot swapping from a live backplane
  • 2.9 V to 18 V operating range
  • Controls N-channel MOSFETs
  • Limits peak fault current in 1 microsecond or less
  • Adjustable current limit with circuit breaker
  • Adjustable current limit fault delay
  • Smooth switchover without oscillation
  • 0.5 microsecond ideal diode turn-on and turn-off
  • Status, fault and power good outputs
  • Automatic retry after fault
  • 28-Lead Plastic QFN (4mm x 5mm) package
  • RoHS compliant, lead free
Specifications
SeriesLTC4228
Part NumberLTC4228CUFD-2
FunctionDual ideal diode and Hot Swap controller
Input Supply Range2.9 V to 18 V
Absolute Maximum IN24 V
Input Supply Current2.5 mA typ, 5 mA max
Internal Regulator Voltage4.5 V / 5 V / 5.6 V (INTVCC)
INTVCC Undervoltage Lockout2.1 V / 2.2 V / 2.3 V rising, 60 mV hysteresis
Ideal Diode Forward Regulation10 mV / 25 mV / 40 mV (VIN - VOUT)
External N-Channel Gate Drive5 V to 14 V (DGATE - IN)
Circuit Breaker Trip Sense Voltage47.5 mV / 50 mV / 52.5 mV
Active Current Limit Sense Voltage55 mV / 65 mV / 75 mV
SENSE+ Undervoltage Lockout1.75 V / 1.9 V / 2.05 V rising, 50 mV hysteresis
Ideal Diode Turn-On / Turn-Off0.5 microseconds
Peak Fault Current Response1 microsecond or less
Fault ResponseAutomatic retry after fault
Status OutputsSTATUS, FAULT and PWRGD per rail
ChannelsTwo rails, independent on/off control
Operating Temperature0 to 70 degrees C
Package / Case28-Lead Plastic QFN (4mm x 5mm)
RoHSRoHS compliant, lead free
Typical Applications
  • Redundant power supplies
  • MicroTCA systems and servers
  • Telecom networks
  • Power prioritizers
  • Hot board and connector insertion
  • Ideal diode ORing of two supplies

Typical use is a 12 V plug-in card that takes power from either of two backplane feeds without interruption.

MJD Advantage
  • 15+ years of electronic components experience
  • Secure ordering process
  • Excellent customer feedback
  • Confirmed delivery dates
  • Competitive pricing on volume orders
  • Global export experience with responsive after-sales support
Company Profile

Shenzhen Mingjiada Electronics Co., Ltd. is an independent distributor of electronic components from established manufacturers. Founded in Shenzhen in 1996, Mingjiada has established branches in Hong Kong, Japan, Russia, and Taiwan.

Certified under ISO9001:2014 for quality management systems and ISO14001:2014 for environmental management systems. With an experienced team in sales, R&D and management, we specialize in distributing products from more than 500 established suppliers.

Adhering to the principle of "maximizing benefits for customers," we offer comprehensive product ranges and provide high-quality, responsive service through professional logistics and customer service teams.

Quality Assurance
Quality checking and certification process for electronic components
Other Supply Product Types

Other product types we regularly stock and supply appear below.

Part NumberSeries
ADC122S625CIMMADC122
ADS8506IDWRADS8506
ADC08D1020CIYBADC08
ADC122S706CIMTADC122
ADS1281IPWRADS1281
ADS5237IPAGADS5237
ADC12C105CISQADC12
ADS6423IRGCRADS6423
LMI800PSDVVRLMI800
ADC34DSO75IANHADC34
LMK6BPK62500FDLRRLMK6
ADS8365IPAGRADS8365
ADS1000A1IDBVRADS1000
ADS5545IRGZADS5545
ADC14155CISQADC14155
ADS5546IRGZRADS5546
ADS1226IRGVRADS1226
ADS1225IRGVRADS1225
ADC10DL065CIVSADC10
ADS8328IBPWADS8328
Frequently Asked Questions
Are your LTC4228CUFD-2 products new stock?
Yes. Every part we ship is new stock sourced through established supply channels, with full traceability.
Which package does the LTC4228CUFD-2 use?
It is supplied in the 28-Lead Plastic QFN (4mm x 5mm) package, the commercial grade version specified from 0 to 70 degrees C.
What supply voltage range does the LTC4228CUFD-2 support?
It operates from 2.9 V to 18 V, with an absolute maximum input rating of 24 V.
What does the LTC4228CUFD-2 replace in a redundant supply design?
It replaces two high power Schottky diodes and their heat sinks with external N-channel MOSFETs controlled as ideal diodes, saving power and board area.
What happens after an overcurrent fault?
The LTC4228CUFD-2 is the auto-retry version: after a fault the rail turns off and retries automatically once the fault clears.
How fast does the LTC4228CUFD-2 respond to a fault?
Peak fault current is limited in 1 microsecond or less, and the ideal diode turns off in 0.5 microseconds to minimise reverse current transients.
How do you ship my order? Is it safe?
We use express carriers including DHL, FedEx, UPS, TNT, and EMS. We can also use your preferred forwarder. Products are carefully packaged to ensure safety, and we take responsibility for any damage to your order.

Tag:

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Contact Details
ShenZhen Mingjiada Electronics Co.,Ltd.

Contact Person: Sales Manager

Tel: 86-13410018555

Fax: 86-0755-83957753

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