- Pinout Diagram
- Footprint Diagram
ADI ADM1278-1ACPZ-RL
| Manufacturer | |
| MPN | ADM1278-1ACPZ-RL |
| LCSC Part # | C657901 |
| Packaging | LFCSP-32(5x5) |
| Customer # | |
| Key Attributes | Hot Swap Controller and Digital Power and Energy Monitor with PMBus Interface |
| Datasheet |  ADI ADM1278-1ACPZ-RL |
Products Specifications
Show similar products (0) >| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Power Management (PMIC)/Hot Swap Controllers | |
| Manufacturer | ADI | |
| Packaging | LFCSP-32(5x5) | |
| Operating Temperature Range | -40℃~+85℃ | |
| Length | 5mm | |
| Height | - | |
| Features | Overcurrent Protection;Short-Circuit Protection;Under-voltage lockout | |
| Width | 5mm | |
| Threshold Voltage | 20mV | |
| Peak Output Current(Source) | - | |
| Number of Channels | 1 | |
| Voltage Rating | 4.5V~20V | |
| RDS(on) | - | |
| Peak Output Current(Sink) | - |
Additional Information
| Type | Details |
|---|---|
| Minimum | 1 |
| Multiple | 1 |
| Standard Packaging | 5000 |
| Sales Unit | Piece |
| EDA Models | EasyEDA Model |
Introduction
The ADM1278 is a hot swap controller that allows a circuit board to be removed from or inserted into a live backplane. It also features current, voltage, power, and temperature readback via an integrated 12-bit analog-to-digital converter (ADC), accessed using a PMBus interface. The load current is measured using an internal current sense amplifier that measures the voltage across a sense resistor in the power path via the HS+ and HS- pins. A default current limit of 20 mV is set, but this limit can be adjusted, if required.
The ADM1278 limits the current through the sense resistor by controlling the gate voltage of an external N-channel FET in the power path, via the GATE pin. The sense voltage, and therefore the load current, is maintained below the preset maximum. The ADM1278 protects the external FET by limiting the time that the FET remains on while the current is at its maximum value. This current-limit time is set by the choice of capacitor connected to the TIMER pin. In addition, a constant power foldback scheme is used to control the power dissipation in the MOSFET during power-up and fault conditions. The level of this power, along with the TIMER regulation time, can be set to ensure that the MOSFET remains within safe operating area (SOA) limits.
Features
- ±0.3% accurate, 12-bit ADC for IOUT, VIN, VOUT, and temperature
- 320 ns response time to short circuit
- Shutdown on detection of FET health fault
- Constant power foldback for tighter FET SOA protection
- Remote temperature sensing with programmable warning and shutdown thresholds
- Resistor-programmable 5 mV to 25 mV VSENSE current limit
- Programmable start-up current limit
- 7% accurate UV, OV, and PWRGD thresholds
- Split hot swap and power monitor inputs to allow additional external ADC filtering
- Reports power and energy consumption over time
- Peak detect registers for current, voltage, and power
- PROCHOT power throttling capability
- PMBus fast mode compliant interface
- 5 mm×5 mm, 32-lead LFCSP
Applications
- Servers Power monitoring and control/power budgeting
- Telecommunication and data communication equipment
| Qty | Unit Price | Total Amount |
|---|---|---|
| 1+ | $ 9.6853 | $ 9.69 |
| 10+ | $ 8.5404 | $ 85.40 |
| 30+ | $ 7.1952 | $ 215.86 |
| 100+ | $ 6.6089 | $ 660.89 |
Standard Packaging5000/Full Reel | ||
Products Specifications
Show similar products (0) >| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Power Management (PMIC)/Hot Swap Controllers | |
| Manufacturer | ADI | |
| Packaging | LFCSP-32(5x5) | |
| Operating Temperature Range | -40℃~+85℃ | |
| Length | 5mm | |
| Height | - | |
| Features | Overcurrent Protection;Short-Circuit Protection;Under-voltage lockout | |
| Width | 5mm | |
| Threshold Voltage | 20mV | |
| Peak Output Current(Source) | - | |
| Number of Channels | 1 | |
| Voltage Rating | 4.5V~20V | |
| RDS(on) | - | |
| Peak Output Current(Sink) | - |
Additional Information
| Type | Details |
|---|---|
| Minimum | 1 |
| Multiple | 1 |
| Standard Packaging | 5000 |
| Sales Unit | Piece |
| EDA Models | EasyEDA Model |
Introduction
The ADM1278 is a hot swap controller that allows a circuit board to be removed from or inserted into a live backplane. It also features current, voltage, power, and temperature readback via an integrated 12-bit analog-to-digital converter (ADC), accessed using a PMBus interface. The load current is measured using an internal current sense amplifier that measures the voltage across a sense resistor in the power path via the HS+ and HS- pins. A default current limit of 20 mV is set, but this limit can be adjusted, if required.
The ADM1278 limits the current through the sense resistor by controlling the gate voltage of an external N-channel FET in the power path, via the GATE pin. The sense voltage, and therefore the load current, is maintained below the preset maximum. The ADM1278 protects the external FET by limiting the time that the FET remains on while the current is at its maximum value. This current-limit time is set by the choice of capacitor connected to the TIMER pin. In addition, a constant power foldback scheme is used to control the power dissipation in the MOSFET during power-up and fault conditions. The level of this power, along with the TIMER regulation time, can be set to ensure that the MOSFET remains within safe operating area (SOA) limits.
Features
- ±0.3% accurate, 12-bit ADC for IOUT, VIN, VOUT, and temperature
- 320 ns response time to short circuit
- Shutdown on detection of FET health fault
- Constant power foldback for tighter FET SOA protection
- Remote temperature sensing with programmable warning and shutdown thresholds
- Resistor-programmable 5 mV to 25 mV VSENSE current limit
- Programmable start-up current limit
- 7% accurate UV, OV, and PWRGD thresholds
- Split hot swap and power monitor inputs to allow additional external ADC filtering
- Reports power and energy consumption over time
- Peak detect registers for current, voltage, and power
- PROCHOT power throttling capability
- PMBus fast mode compliant interface
- 5 mm×5 mm, 32-lead LFCSP
Applications
- Servers Power monitoring and control/power budgeting
- Telecommunication and data communication equipment
Compliance & Export Codes
| Type | Details |
|---|---|
| RoHS | |
| ECCN | EAR99 |
| CNHTS | 8536300000 |
| USHTS | 8536308000 |
| TARIC | 8536301010 |
| CAHTS | 8536302000 |
| BRHTS | 85363090 |
| INHTS | 85363000 |
| MXHTS | 8536.30.01 |
| Type | Details |
|---|---|
| RoHS | |
| ECCN | EAR99 |
| CNHTS | 8536300000 |
| USHTS | 8536308000 |
| TARIC | 8536301010 |
| Type | Details |
|---|---|
| CAHTS | 8536302000 |
| BRHTS | 85363090 |
| INHTS | 85363000 |
| MXHTS | 8536.30.01 |