ADM1276-3ACPZ-RL(Rev0) Просмотр технического описания (PDF) - Analog Devices

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производитель

ADM1276-3ACPZ-RL
(Rev.:Rev0)

Hot Swap Controller and Digital Power and Energy Monitoring with PMBus Interface

Analog Devices 

ADM1276

Pin No. Mnemonic

16

GATE

17

SENSE−

18

SENSE+

N/A1 EP

1 N/A means not applicable.

Description

Gate Output Pin. This pin is the high-side gate drive of an external N-channel FET. This pin is driven by the FET

drive controller, which uses a charge pump to provide a pull-up current to charge the FET gate pin. The FET drive

controller regulates to a maximum load current by regulating the GATE pin. GATE is held low when the supply is

below UVLO.

Negative Current Sense Input Pin. A sense resistor between the SENSE+ pin and the SENSE− pin sets the analog

current limit. The hot swap operation of the ADM1276 controls the external FET gate to maintain the sense

voltage (VSENSE+ − VSENSE−). This pin also connects to the FET drain pin.

Positive Current Sense Input Pin. This pin connects to the main supply input. A sense resistor between the

SENSE+ pin and the SENSE− pin sets the analog current limit. The hot swap operation of the ADM1276 controls

the external FET gate to maintain the sense voltage (VSENSE+ − VSENSE−). This pin is also used to measure the supply

input voltage using the ADC.

Exposed Pad. The exposed pad is located on the underside of the LFCSP package. Solder the exposed pad to the

printed circuit board (PCB) to improve thermal dissipation. The exposed pad can be connected to ground.

Rev. 0 | Page 10 of 48

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