TPS2001CDGKR High-Accuracy 1.8V-5.5V Power Monitor with Ultra-Low 6µA Current 0.5% Voltage Accuracy I²C Interface Small 8-Pin VSSOP Wide -40°C to +125°C Range & Low 0.7V Threshold

FEATURES

USB 2.0 compatible

Low and full speed data rate: 1.5 Mbps and 12 Mbps

Bidirectional communication

4.5 V to 5.5 V VBUS operation

7 mA maximum upstream supply current at 1.5 Mbps

8 mA maximum upstream supply current at 12 Mbps

2.3 mA maximum upstream idle current

Upstream short-circuit protection

Class 3A contact ESD performance per ANSI/ESD STM5.1-2007

High temperature operation: 105°C

High common-mode transient immunity: >25 kV/μs

16-lead SOIC wide body package

RoHS compliant

Qualified for automotive applications

APPLICATIONS

USB peripheral isolation Isolated USB hub

DESCRIPTION

The ADuM31601 is a USB port isolator based on Analog Devices, Inc., iCoupler® technology. Combining high speed CMOS and monolithic air core transformer technology, this isolation component provides outstanding performance characteristics and is easily integrated with low and full speed USB-compatible peripheral devices.

Many microcontrollers implement USB so that it presents only the D+ and D− lines to external pins. This is desirable in many cases because it minimizes external components and simplifies the design; however, this presents particular challenges when isolation is required. Because the USB lines must switch between actively driving D+/D− and allowing external resistors to set the state of the bus, the ADuM3160 provides mechanisms for detecting the direction of data flow and control over the state of the output buffers. Data direction is determined on a packet-by-packet basis.

The ADuM3160 uses the edge detection based iCoupler technology in conjunction with internal logic to implement a transparent, easily configured, upstream-facing port isolator. Isolating the upstream port provides several advantages in simplicity, power management, and robust operation.

The isolator has a propagation delay comparable to that of a standard hub and cable. It operates with the bus voltage on either side ranging from 4.5 V to 5.5 V, allowing connection directly to VBUSx by internally regulating the voltage to the signaling level. The ADuM3160 provides isolated control of the pull-up resistor to allow the peripheral to control connection timing. The device draws low enough idle current that a suspend state is not required. A 5 kV, reinforced insulation version, the ADuM4160, is available.

INFORMATION

Drawing

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