Datasheet ADM3260 (Analog Devices)

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Hot Swappable, Dual I2C Isolators with Integrated DC-to-DC Converter Data Sheet ADM3260 FEATURES FUNCTIONAL BLOCK DIAGRAM iso Power integrated, isolated dc-to-dc converter ADM3260 Regulated 3.15 V to 5.25 V output Up to 150 mW output power GNDP DECODE ENCODE GNDISO High common-mode transient immunity: >25 kV/µs SCL2 ENCODE DECODE SCL1 i Coupler integrated I2C digital isolator Bidirectional I2C communication SDA2 DECODE ENCODE SDA1 3.0 V to 5.5 V supply/logic levels VDDP ENCODE DECODE VDDISO Open-drain interfaces Suitable for hot swap applications GNDP SIGNAL ISOLATION GNDISO 30 mA current sink capability 1000 kHz maximum frequency NC NC 20-lead SSOP package with 5.3 mm creepage GNDP POWER ISOLATION GNDISO High temperature operation: 105°C Safety and regulatory approvals PDIS PCS VSEL UL recognition VIN OSC RECT REG VISO 2500 V rms for 1 minute per UL 1577 CSA Component Acceptance Notice 5A GNDP GNDISO
001
VDE Certificate of Conformity (pending)
11890- Figure 1.
DIN V VDE V 0884-10 (VDE V 0884-10):2006-12 VIORM = 560 V peak Table 1. Power Levels for Isolated Converter APPLICATIONS Input Voltage (V) Output Voltage (V) Output Power (mW)
5.0 5.0 150
Isolated I2C, SMBus, and PMBus interfaces
5.0 3.3 100
Multilevel I2C interfaces
3.3 3.3 66
Central office switching Telecommunication and data communication equipment −48 V distributed power systems −48 V power supply modules Networking GENERAL DESCRIPTION
Based on the Analog Devices, Inc., isoPower technology, the Based on the iCoupler® and isoPower® chip scale transformer on-chip isolated dc-to-dc converter provides a regulated, isolated technology, the ADM32601 is a hot swappable digital and power voltage of 3.15 V to 5.25 V with up to 150 mW of output power isolator with two nonlatching, bidirectional communication (see Figure 1). channels, supporting a complete isolated I2C interface, and an With the ADM3260, the iCoupler and isoPower channels, along integrated isolated dc-to-dc converter, supporting up to with the I2C transceivers, can be integrated with semiconductor 150 mW of isolated power conversion. circuitry, which enables a complete isolated I2C interface and iCoupler is a chip scale transformer technology with functional, allows the power converter to be implemented in a small form performance, size, and power consumption advantages as factor. The ADM3260 is available in 20-lead SSOP package and compared to optocouplers. The bidirectional I2C channels has an operating temperature range of −40°C to+105°C. eliminate the need for splitting I2C signals into separate transmit isoPower uses high frequency switching elements to transfer power and receive signals for use with standalone optocouplers. through its transformer. Special care must be taken during printed circuit board (PCB) layout to meet emissions standards. See the AN-0971 Application Note for board layout recommendations. 1 Protected by U.S. Patents 5,952,849; 6,873,065; and 7,075,329. Other patents are pending.
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Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION REVISION HISTORY SPECIFICATIONS ELECTRICAL CHARACTERISTICS—5 V PRIMARY INPUT SUPPLY/5 V SECONDARY ISOLATED SUPPLY ELECTRICAL CHARACTERISTICS—5 V PRIMARY INPUT SUPPLY/3.3 V SECONDARY ISOLATED SUPPLY ELECTRICAL CHARACTERISTICS—3.3 V PRIMARY INPUT SUPPLY/3.3 V SECONDARY ISOLATED SUPPLY DC-TO-DC CONVERTER CHARACTERISTICS DIGITAL ISOLATOR DC SPECIFICATIONS DIGITAL ISOLATOR AC SPECIFICATIONS PACKAGE CHARACTERISTICS REGULATORY APPROVALS INSULATION AND SAFETY RELATED SPECIFICATIONS DIN V VDE V 0884-10 (VDE V 0884-10) INSULATION CHARACTERISTICS RECOMMENDED OPERATING CONDITIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION VISO VOLTAGE TRUTH TABLE PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TEST CONDITION APPLICATIONS INFORMATION FUNCTIONAL DESCRIPTION DIGITAL ISOLATOR STARTUP TYPICAL APPLICATION DIAGRAM PCB LAYOUT THERMAL ANALYSIS EMI CONSIDERATIONS INSULATION LIFETIME APPLICATIONS EXAMPLE OUTLINE DIMENSIONS ORDERING GUIDE