PDF《DATASHEET》

8 Absolute Maximum Ratings.10 Thermal Information

10 Recommended Operating Conditions

10 Electrical Specifications

10 Typical Performance Curves

13 Efficiency Performance

13 Transient Response Performance

14 Derating Curves

15 Functional Description

16 SMBus Communications.16 Output Voltage Selection

16 Soft-Start, Stop Delay, and Ramp Times

16 Power-Good

17 Switching Frequency and PLL

17 Loop Compensation

18 Input Undervoltage Lockout (UVLO)18 SMBus Module Address Selection.18 Output Overvoltage Protection.19 Output Prebias Protection

19 Output Overcurrent Protection.19 Thermal Overload Protection

20 Digital-DC Bus

20 Active Current Sharing

20 Phase Spreading

21 Fault Spreading

21 Output Sequencing

21 Monitoring with SMBus.22 Snapshot Parameter Capture

22 Nonvolatile Memory

22 Layout Guide.22 Thermal Considerations

23 Package Description

23 PCB Layout Pattern Design

23 Thermal Vias.23 Stencil Pattern Design

23 Reflow Parameters

23 PMBus Command Summary

24 PMBus Data Formats.27 PMBus Use Guidelines

28 Summary

28 PMBus Commands Description

28 Datasheet Revision History

51 Firmware Revision History

52 About Intersil

52 Package Outline Drawing

53 ISL8273M FN8704 Rev.4.00 Page

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59 Oct 13,

2017 Ordering Information PART NUMBER (Notes 1, 2, 3) PART MARKING TEMP RANGE (°C) PACKAGE (RoHS Compliant) PKG. DWG. # ISL8273MAIRZ ISL8273M -40 to +85

58 LD 18x23 HDA Module Y58.18x23 ISL8273MCIRZ ISL8273MC -40 to +85

58 LD 18x23 HDA Module Y58.18x23 ISL8273MDIRZ ISL8273MD -40 to +85

58 LD 18x23 HDA Module Y58.18x23 ISL8273MEVAL1Z Single-Module Evaluation Board (see UG036, ISL8273MEVAL1Z Evaluation Board User Guide ) NOTES: 1. Add -T suffix for

100 unit tape and reel options. Refer to TB347 for details about reel specifications. 2. These Pb-free plastic packaged products are RoHS compliant by EU exemption 7C-I and 7A. They employ special Pb-free material sets;

molding compounds/die attach materials and NiPdAu plate-e4 termination finish, which is compatible with both SnPb and Pb-free soldering operations. Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J-STD-020. 3. For Moisture Sensitivity Level (MSL), refer to the ISL8273M product information page. For more information about MSL, refer to TB363. ISL xxxxM F T R Z S INTERSIL?DEVICE?DESIGNATOR BASE?PART?NUMBER FIRMWARE?REVISION A:?FC01 B:?FC02 C:?FC03 D:?FC04 OPERATING?TEMPERATURE I:?INDUSTRIAL?(\?40°C?TO?+85°C) SHIPPING?OPTION BLANK:?BULK T:?TAPE?AND?REEL ROHS Z:?ROHS?COMPLIANT PACKAGE?DESIGNATOR R:?HIGH?DENSITY?ARRAY?(HDA) Pin Configuration ISL8273M (58 LD HDA) TOP VIEW A B C D E F G H J K L M N P R T U V W Y AA AB AC

1 2

3 4

5 6

7 8

9 10

11 12

13 14

15 16

17 18 PAD1 PAD2 PAD8 PAD9 PAD10 PAD11 PAD12 PAD6 PAD13 PAD14 PAD15 PAD16 PAD3 PAD4 PAD5 PAD7 VOUT VOUT PGND PGND PGND PGND PGND PGND SGND PGND PGND SW1 SW2 VIN VIN VIN VR55 VDRV1 VDRV1 SWD2 PGND VDRV PGND SWD1 VR VCC VSENP VSENN TEST TEST DDC SS/UVLO PG VSET TEST CS MGN SA SALRT SDA SCL VMON SYNC TEST EN TEST TEST V25 ASCR SGND VDD VR5 SGND VR6 VDRV PGND ISL8273M FN8704 Rev.4.00 Page

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2017 Pin Descriptions PIN NUMBER PIN NAME TYPE DESCRIPTION PAD1, PAD2 VOUT PWR Power supply output voltage. Output voltage ranges from 0.6V to 2.5V. Tie these two pins together to achieve a single output. For higher output voltage, refer to the derating curves starting on page

15 to set the maximum output current from these pads. PAD3, PAD4, PAD5, PAD7, PAD10,PAD12, PAD13, PAD15 PGND PWR Power ground. Refer to the Layout Guide on page