ADM1270 High Voltage Input Protection Device _ BDTIC a Leading Distributor in China

ADM1270 High Voltage Input Protection Device

The ADM1270 is a current-limiting controller that provides inrush current limiting and overcurrent protection for modular or battery-powered systems. When circuit boards are inserted into a live backplane, discharged supply bypass capacitors draw large transient currents from the backplane power bus as they charge. These transient currents can cause permanent damage to connector pins, as well as dips on the backplane supply that can reset other boards in the system.

The ADM1270 is designed to control the inrush current, when powering on the system, via an external P-channel field effect transistor (FET).

To protect the system from a reverse polarity input supply, there is a provision made to control an additional external P-channel FET. This feature prevents reverse current flow in case of a reverse polarity connection, which can damage the load or the ADM1270. The ADM1270 is available in a 3 mm × 3 mm, 16-lead LFCSP and a 16-lead QSOP.

Applications

Features and Benefits

Controls supply voltages from 4 V to 60 V

Gate drive for low voltage drop reverse supply protection

Gate drive for P-channel FETs

Inrush current limiting control

Adjustable current limit

Foldback current limiting

Automatic retry or latch-off on current fault

Programmable current-limit timer for safe operating area (SOA)

Power-good and fault outputs

Analog undervoltage (UV) and overvoltage (OV) protection

16-lead, 3 mm × 3 mm LFCSP

16-lead QSOP

Power Management

Hot Swap

Design Tools

ADM1270 Design Worksheet Tool .

Data Sheets

Document	note
ADM1270: High Voltage Input Protection Device Data Sheet (Rev. A)	PDF 371.38 K

User Guides

Document	note
UG-760: Evaluating the ADM1270 High Voltage Input Protection Device (Rev. A)	PDF 546.67 K

Order Information

Part Number	Package	Packing Qty	Temp Range	Price 100-499	Price 1000+	RoHS
ADM1270ACPZ-R2 Production	16 ld LFCSP (3x3mm, 1.5mm exposed pad)	REEL 250	-40 to 125C	1.67	0.99	Y
ADM1270ACPZ-R7 Production	16 ld LFCSP (3x3mm, 1.5mm exposed pad)	REEL 1500	-40 to 125C	0	0.99	Y
ADM1270ARQZ Production	16 ld QSOP	OTH 98	-40 to 125C	1.94	1.15	Y
ADM1270ARQZ-R7 Production	16 ld QSOP	REEL 1000	-40 to 125C	0	1.15	Y