Overview
The ADM1275-1ACPZ is a high-performance hot-swap controller and digital power monitor produced by Analog Devices Inc. This component is designed to enable the safe removal and insertion of circuit boards in live backplanes, making it ideal for applications requiring hot-swapping and detailed power monitoring.
The ADM1275-1ACPZ features an integrated 12-bit ADC for precise monitoring of current and voltage levels, which can be accessed through a PMBus™ interface. It also includes an internal current sense amplifier to accurately measure load current by analyzing the voltage across a sense resistor. The controller offers adjustable current limits and programmable features such as overvoltage shutdown, fault timeout, and latched fault, enhancing its versatility and reliability in various power management scenarios.
Key Specifications
| Category | Description |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Part Number | ADM1275-1ACPZ |
| Type | Hot Swap Controller, Monitor |
| Number of Channels | 1 |
| Internal Switch(s) | No |
| Applications | General Purpose |
| Features | PMBus, Auto Retry, Current Limit, Fault Timeout, Latched Fault, OVP, UVLO |
| Voltage - Supply | 2.95 V ~ 20 V |
| Operating Temperature | -40°C ~ 85°C |
| Current - Supply | 5 mA |
| Mounting Type | Surface Mount |
| Package / Case | 20-WQFN Exposed Pad, CSP |
Key Features
- Programmable overvoltage shutdown threshold from 14 V to 20 V
- 10 mA to 50 mA programmable quiescent current
- ±0.4% accurate, 17-bit ADC for voltage readback
- Adjustable current limit from 5 mA to 25 mA
- FET fault detection with ±2 ms response time
- Safe operating area for external FET protection
- Integrated 12-bit ADC for current and voltage monitoring via PMBus interface
- Internal current sense amplifier for accurate load current measurement
Applications
- Remote monitoring
- Building automation
- Power distribution systems
- General purpose hot-swapping in live backplanes
Q & A
- What is the primary function of the ADM1275-1ACPZ?
The primary function of the ADM1275-1ACPZ is to enable safe removal and insertion of circuit boards in live backplanes while providing detailed power monitoring through a PMBus interface.
- What type of ADC does the ADM1275-1ACPZ feature?
The ADM1275-1ACPZ features an integrated 12-bit ADC for precise monitoring of current and voltage levels.
- How is the load current measured in the ADM1275-1ACPZ?
The load current is measured using an internal current sense amplifier that analyzes the voltage across a sense resistor in the power path.
- What is the adjustable current limit range of the ADM1275-1ACPZ?
The current limit can be adjusted from 5 mA to 25 mA using a resistor divider network connected to the ISET pin.
- What is the operating temperature range of the ADM1275-1ACPZ?
The operating temperature range is -40°C to 85°C.
- What is the supply voltage range for the ADM1275-1ACPZ?
The supply voltage range is from 2.95 V to 20 V.
- Does the ADM1275-1ACPZ have internal switches?
No, the ADM1275-1ACPZ does not have internal switches.
- What are some of the programmable features of the ADM1275-1ACPZ?
The programmable features include auto retry, current limit, fault timeout, latched fault, overvoltage protection (OVP), and undervoltage lockout (UVLO).
- What package type is the ADM1275-1ACPZ available in?
The ADM1275-1ACPZ is available in a 20-WQFN Exposed Pad, CSP package.
- What are some common applications of the ADM1275-1ACPZ?
Common applications include remote monitoring, building automation, and power distribution systems.
