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Product Detailed Parameters
- Description：HIGH VOLTAGE CURRENT LIMIT
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Hot Swap Controller
- Number of Channels：1
- Internal Switch(s)：No
- Applications：General Purpose
- Features：-
- Programmable Features：Auto Retry, Circuit Breaker, Current Limit, Fault Timeout, Latched Fault, OVP, UVLO
- Voltage - Supply：4V ~ 60V
- Current - Output (Max)：-
- Operating Temperature：-40°C ~ 125°C
- Current - Supply：360 µA
- Mounting Type：Surface Mount
- Package / Case：16-WFQFN Exposed Pad, CSP
- Supplier Device Package：16-LFCSP-WQ (3x3)
- Grade：-
- Qualification：-
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Overview
The ADM1270ACPZ-R2 is a hot swap voltage controller designed for modular or battery-powered systems. It manages safe insertion and removal of circuit boards from live backplanes by controlling surge current through an external P-channel FET. The device supports input voltages from 4 V to 60 V and operates within a temperature range of -40°C to +125°C. Key electrical parameters include a quiescent current of 360 µA, adjustable current limit with foldback, and compliance with Safe Operating Area (SOA) via programmable timers. It provides power good and fault outputs along with analog undervoltage and overvoltage protection.
Feature Summary
- Controls surge current during board insertion into live backplanes using an external P-channel FET
- Provides low-dropout reverse polarity protection for the input supply
- Features adjustable current limiting with foldback capability and automatic retry or lockout on fault
- Includes analog undervoltage and overvoltage protection mechanisms
Applications
- Industrial module power management
- Battery-powered portable instrumentation
- Modular system backplane protection
Procurement Notes
Verify the specific suffix R2 indicates tape and reel packaging when sourcing. Confirm the package type matches the required PCB footprint, as the ADM1270 series also offers QSOP-16 options. Ensure the operating voltage range aligns with the system's 4 V to 60 V requirement. Check for RoHS compliance status in the latest datasheet before finalizing procurement.
Selection Notes
Select this component when designing systems requiring controlled power-up sequences for large bypass capacitors. It is suitable for applications needing robust protection against connector damage and bus voltage sags. Consider the external P-channel FET selection carefully to match the current handling requirements. Verify that the available packages fit the spatial constraints of the design.
Part Context
This part belongs to the ADM1270 family of high-voltage current limit controllers manufactured by Analog Devices. It is distinct from other hot swap controllers like the ADM1273 or ADM1281 which may offer different voltage ranges or channel counts. The ACPZ suffix denotes the LFCSP package variant, differing from the ARQZ QSOP version.
Replacement Considerations
Direct substitutes within the same family include ADM1270ARQZ-R7 and ADM1270ACPZ-R7. These share identical functional specifications but differ in packaging format. Verify pin compatibility and thermal performance when switching between LFCSP and QSOP variants.
