ADM1075
LAST TIME BUY−48 V Hot Swap Controller and Digital Power Monitor with PMBus Interface
- Part Models
- 8
- 1ku List Price
- price unavailable
Overview
- Constant power foldback for FET SOA protection
- Precision (<1.0%) current and voltage measurement
- Controls inrush and faults for negative supply voltages
- Suitable for wide input range due to internal shunt regulator
- 25 mV/50 mV full-scale sense voltage
- Fine tune current limit to allow use of standard sense resistor
- Soft start inrush current limit profiling
- 1% accurate UVH and OV pins, 1.5% accurate UVL pin
- PMBus interface for control, telemetry, and fault recording
- 28-lead TSSOP
- -40°C to 105°C junction temperature (TJ) operating range
The ADM1075 is a full feature, negative voltage, hot swap controller with constant power foldback and high accuracy digital current and voltage measurement that allows boards to be safely inserted and removed from a live -48 V backplane. The part provides precise and robust current limiting and protection against both transient and nontransient short circuits and overvoltage and undervoltage conditions. The ADM1075 typically operates from a negative voltage of -35 V to -80 V and, due to shunt regulation, has excellent voltage transient immunity. The operating range of the part is flexible due to the shunt regulator, and the part can be powered directly by a 10 V rail to save shunt power dissipation (see the Powering the ADM1075 section for more details).
A full-scale current limit of 25 mV or 50 mV can be selected by choosing the appropriate model. The maximum current limit is set by the combination of the sense resistor, RSENSE, and the input voltage on the ISET pin, using external resistors. This allows fine tuning of the trip voltage so that standard sense resistors can be used. Inrush current is limited to this programmable value by controlling the gate drive of an external N-channel FET. A builtin soft start function allows control of the inrush current profile by an external capacitor on the soft start (SS) pin.
Refer to the datasheet for more information.
PRODUCT HIGHLIGHTS
- Constant Power Foldback.
Maximum FET power set by a PLIM resistor divider. This eases complexity when designing to maintain FET SOA. - Adjustable Current Limit.
The current limit is adjustable via the ISET pin allowing for the use of a standard value sense resistor. - 12-Bit ADC.
Accurate voltage, current, and power measurements. Also enables calculation of energy consumption over time. - PMBus Interface.
PMBus fast mode compliant interface used to read back status and data registers and set warning and fault limits. - Fault Recording.
Latched status registers provide useful debugging information to help trace faults in high reliability systems. - Built-In Soft Start.
Soft start capacitor controls inrush current profile with di/dt control.
APPLICATIONS
- Telecommunication and data communication equipment
- Central office switching
- -48 V distributed power systems
- Negative power supply control
- High availability servers
Documentation
Data Sheet 1
User Guide 4
Application Note 2
Technical Articles 1
Product Selector Card 1
Analog Dialogue 1
Webcast 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| ADM1075-1ACPZ | 28-Lead LFCSP (5mm x 5mm x 0.75mm w/ EP) | ||
| ADM1075-1ACPZ-RL7 | 28-Lead LFCSP (5mm x 5mm x 0.75mm w/ EP) | ||
| ADM1075-1ARUZ | 28-Lead TSSOP (4.4mm x 9.7mm) | ||
| ADM1075-1ARUZ-RL7 | 28-Lead TSSOP (4.4mm x 9.7mm) | ||
| ADM1075-2ACPZ | 28-Lead LFCSP (5mm x 5mm x 0.75mm w/ EP) | ||
| ADM1075-2ACPZ-RL7 | 28-Lead LFCSP (5mm x 5mm x 0.75mm w/ EP) | ||
| ADM1075-2ARUZ | 28-Lead TSSOP (4.4mm x 9.7mm) | ||
| ADM1075-2ARUZ-RL7 | 28-Lead TSSOP (4.4mm x 9.7mm) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jul 5, 2018 - 16_0235 Assembly Transfer to ASE Korea and Test Transfer to STATS ChipPAC Singapore of Select LFCSP Parts. |
||
| ADM1075-1ACPZ | ||
| ADM1075-1ACPZ-RL7 | ||
| ADM1075-2ACPZ | ||
| ADM1075-2ACPZ-RL7 | ||
|
Oct 18, 2016 - 16_0036 Assembly Relocation to Stats ChipPAC Jiangyin and Test Transfer to Stats ChipPAC Singapore of Select LFCSP Products |
||
| ADM1075-1ACPZ | ||
| ADM1075-1ACPZ-RL7 | ||
|
Aug 6, 2014 - 13_0230 Assembly and Test Transfer of Select 3.5x3.5, 4x3, 4x4, and 5x5mm LFCSP Products to STATS ChipPAC China |
||
| ADM1075-1ACPZ | ||
| ADM1075-1ACPZ-RL7 | ||
| ADM1075-2ACPZ | ||
| ADM1075-2ACPZ-RL7 | ||
|
Apr 5, 2021 - 21_0035 Amkor Philippines as an Alternate Site for TSSOP_4.4 |
||
| ADM1075-1ARUZ | ||
| ADM1075-1ARUZ-RL7 | ||
| ADM1075-2ARUZ | ||
| ADM1075-2ARUZ-RL7 | ||
|
Jan 20, 2012 - 11_0218 Halogen Free Material Change for Certain TSSOP Products at Carsem |
||
| ADM1075-1ARUZ | ||
| ADM1075-1ARUZ-RL7 | ||
| ADM1075-2ARUZ | ||
| ADM1075-2ARUZ-RL7 | ||
|
Oct 1, 2024 - 24_0070 Obsolescence of ADM1075 and ADM1272 |
||
| ADM1075-1ACPZ | ||
| ADM1075-1ACPZ-RL7 | ||
| ADM1075-1ARUZ | ||
| ADM1075-1ARUZ-RL7 | ||
| ADM1075-2ACPZ | ||
| ADM1075-2ACPZ-RL7 | ||
| ADM1075-2ARUZ | ||
| ADM1075-2ARUZ-RL7 | ||
This is the most up-to-date revision of the Data Sheet.
Software Resources
Evaluation Software 2
ADMxxxx Common Run-Time
Can't find the software or driver you need?
Tools & Simulations
Hot Swap Controller Simulation Model Rev. 6
Open Tool
Evaluation Kits
ADM1075 Evaluation Board