参数资料
型号: ADM1275-3ARQZ
厂商: Analog Devices Inc
文件页数: 13/48页
文件大小: 0K
描述: IC HOT SWAP CTRL PMBUS 20QSOP
标准包装: 56
类型: 热交换控制器
应用: 通用
内部开关:
电流限制: 可调
电源电压: 2.95 V ~ 20 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 20-SSOP(0.154",3.90mm 宽)
供应商设备封装: 20-QSOP
包装: 管件
配用: EVAL-ADM1275EBZ-ND - BOARD EVALUATION FOR ADM1275
Data Sheet
Pin No.
ADM1275
QSOP
16
17
18
LFCSP
14
15
16
Mnemonic
VOUT
GND
GATE
Description
This pin is used to read back the output voltage using the internal ADC. A 1 k? resistor should be
inserted in series between the source of a FET and the VOUT pin.
Chip Ground Pin.
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.
19
17
SENSE?
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 ADM1275 controls the external FET gate to
maintain the sense voltage (V SENSE+ ? V SENSE? ). This pin also connects to the FET drain pin.
20
18
SENSE+
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 ADM1275 controls the external FET gate to maintain the sense voltage (V SENSE+ ? V SENSE? ). This
pin is also used to measure the supply input voltage using the ADC.
N/A
EP
EPAD
Exposed Paddle on Underside of LFCSP. Solder the exposed paddle to the board to improve thermal
dissipation. The exposed paddle can be connected to ground.
Rev. D | Page 13 of 48
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