STJK(HK) ELECTRONICS CO.,LIMITED
| Payment Terms | T/T, Western Union, D/P, D/A, , L/C |
| Supply Ability | 40000 Acre/Acres per Day+pcs+2-5days |
| Delivery Time | 2-4work days |
| Packaging Details | Original factory sealed packing with standard types: tube,tray,tape and reel,box,bag packing. Or request for your need. |
| Description | IC HOT SWAP CTRLR GP 20LFCSP |
| Package / Case | 20-LFCSP-WQ |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 85°C |
| Voltage - Supply | 2.95V ~ 20V |
| Current - Supply | 5 mA |
| Product Status | Active |
| Base Product Number | ADM1276 |
| Brand Name | Analog Devices Inc. |
| Model Number | ADM1276-3ACPZ |
| Certification | ISO9001 |
| Place of Origin | China,GuangDong,ShenZhen |
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Product Specification
| Payment Terms | T/T, Western Union, D/P, D/A, , L/C | Supply Ability | 40000 Acre/Acres per Day+pcs+2-5days |
| Delivery Time | 2-4work days | Packaging Details | Original factory sealed packing with standard types: tube,tray,tape and reel,box,bag packing. Or request for your need. |
| Description | IC HOT SWAP CTRLR GP 20LFCSP | Package / Case | 20-LFCSP-WQ |
| Mounting Type | Surface Mount | Operating Temperature | -40°C ~ 85°C |
| Voltage - Supply | 2.95V ~ 20V | Current - Supply | 5 mA |
| Product Status | Active | Base Product Number | ADM1276 |
| Brand Name | Analog Devices Inc. | Model Number | ADM1276-3ACPZ |
| Certification | ISO9001 | Place of Origin | China,GuangDong,ShenZhen |
PRODUCT DESCRIPTION
The ADM1276 is a hot swap controller that allows a circuit board to be removed from or inserted into a live backplane. It also features current and voltage readback via an integrated 12-bit analog-todigital 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 SENSE+ and SENSE− pins. A default limit of 20 mV is set, but this limit can be adjusted, if required, using a resistor divider network from the internal reference voltage to the ISET pin.
The ADM1276 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 ADM1276 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 foldback resistor network can be used to actively lower the current limit as the voltage across the FET is increased.
This helps to maintain constant power in the FET and allows the safe operating area (SOA) to be adhered to in an effective manner. In case of a short-circuit event, a fast internal overcurrent detector responds within 370 ns and signals the gate to shut down. A 1500 mA pull-down device ensures a fast FET response. The ADM1276 features overvoltage (OV) and undervoltage (UV) protection, programmed using external resistor dividers on the UV and OV pins.
A PWRGD signal can be used to detect when the output supply is valid, using the FLB pin to monitor the output. A GPO pin can be configured as an output signal that can be asserted when a programmed current or voltage level is reached. The 12-bit ADC can measure the current in the sense resistor, as well as the supply voltage on the SENSE+ pin or the output voltage. A PMBus interface allows a controller to read current and voltage data from the ADC.
Measurements can be initiated by a PMBus command. Alternatively, the ADC can run continuously, and the user can read the latest conversion data whenever required. As many as four unique PMBus addresses can be selected, depending on the way that the ADR pin is connected. The ADM1276 is available in a 20-lead LFCSP with a LATCH pin that can be configured for automatic retry or latch-off when an overcurrent fault occurs.
PRODUCT PROPERTIES
| Mfr | Analog Devices Inc. |
| Series | - |
| Product Status | Active |
| Type | Hot Swap Controller, Monitor |
| Number of Channels | 1 |
| Internal Switch(s) | No |
| Applications | General Purpose |
| Features | PMBus |
| Programmable Features | Auto Retry, Current Limit, Fault Timeout, Latched Fault, OVP, UVLO |
| Voltage - Supply | 2.95V ~ 20V |
| Current - Output (Max) | - |
| Operating Temperature | -40°C ~ 85°C |
| Current - Supply | 5 mA |
| Mounting Type | Surface Mount |
| Package / Case | 20-WQFN Exposed Pad, CSP |
| Supplier Device Package | 20-LFCSP-WQ (5x5) |
| Base Product Number | ADM1276 |
Company Details
Business Type:
Exporter,Trading Company,Seller
Year Established:
2010
Total Annual:
1000000-9990000
Employee Number:
20~100
Ecer Certification：
Verified Supplier
STJK(HK) ELECTRONICS CO.,LIMITED is an professional Electronic Components distributor,more than 12 years wholesale and distributor enable us accumulated much experience in electronic components field;We sufficient stock of hard to find and obsolete electronic components, semiconductors, military com... STJK(HK) ELECTRONICS CO.,LIMITED is an professional Electronic Components distributor,more than 12 years wholesale and distributor enable us accumulated much experience in electronic components field;We sufficient stock of hard to find and obsolete electronic components, semiconductors, military com...
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