ISL85415AIRZ

ISL85415AIRZ Datasheet

ISL85415A

Part	Datasheet
ISL85415AIRZ	ISL85415AIRZ (pdf)

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Wide VIN 500mA Synchronous Buck Regulator ISL85415A The ISL85415A is a 500mA Synchronous buck regulator with an input range of 3V to 36V. It provides an easy to use, high efficiency low BOM count solution for a variety of applications. The ISL85415A integrates both high-side and low-side NMOS FET's and features a PFM mode for improved efficiency at light loads. This feature can be disabled if forced PWM mode is desired. The part switches at a default frequency of 500kHz but may also be programmed using an external resistor from 300kHz to 2MHz. The ISL85415A has the ability to utilize internal or external compensation. By integrating both NMOS devices and providing internal configuration options, minimal external components are required, reducing BOM count and complexity of design. With the wide VIN range and reduced BOM the part provides an easy to implement design solution for a variety of applications while giving superior performance. It will provide a very robust design for high voltage Industrial applications as well as an efficient solution for battery powered applications. The part is available in a small Pb free 4mmx3mm DFN plastic package with an operation temperature range of -40°C to +85°C Related Literature • See AN1859, “ISL85415AEVAL1Z Wide VIN 500mA Synchronous Buck Regulator” • Wide input voltage range 3V to 36V • Synchronous operation for high efficiency • No compensation required • Integrated High-side and Low-side NMOS devices • Selectable PFM or forced PWM mode at light loads • Internal fixed 500kHz or adjustable switching frequency 300kHz to 2MHz • Continuous output current up to 500mA • Internal or external soft-start • Minimal external components required • Power-good and enable functions available. • Industrial control • Medical devices • Portable instrumentation • Distributed power supplies • Cloud Infrastructure TABLE KEY DIFFERENCES BETWEEN PARTS PART NUMBER TEMP RANGE °C EN THRESHOLD PG DELAY ISL85415 -40°C to +125°C Standard TTL input 10% of soft-start time ISL85415A -40°C to +85°C High accuracy NOTE See Electrical specifications for more details on the ISL85415A. CBOOT 100nF VOUT COUT 10µF L1 22µH CVIN 10µF 2 SYNC 3 BOOT 4 VIN 5 PHASE 6 PGND FS 12 11 COMP 10 FB 9 VCC R3 CVCC 1µF INTERNAL DEFAULT PARAMETER SELECTION FIGURE TYPICAL APPLICATION EFFICIENCY % VIN = 15V VIN = 12V VIN = 5V Ordering Information PART NUMBER Notes 1, 2, 3 PART MARKING TEMP. RANGE °C PACKAGE Pb-Free PKG. DWG. # ISL85415AIRZ 415A -40 to +85 12 Ld DFN L12.4x3 ISL85415AEVAL1Z Evaluation Board NOTES Add “T” suffix for Tape and Reel. Please refer to TB347 for details on reel specifications. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations . Intersil 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. For Moisture Sensitivity Level MSL , please see device information page for ISL85415A. For more information on MSL please see techbrief TB363. FN8414.0 July 11, 2013 ISL85415A Absolute Maximum Ratings VIN to GND. -0.3V to +42V PHASE to GND. -0.3V to VIN+0.3V DC PHASE to GND. -2V to 43V 20ns EN to GND -0.3V to +42V BOOT to PHASE -0.3V to +5.5V COMP, FS, PG, SYNC, SS, VCC to GND -0.3V to +5.9V FB to GND -0.3V to +2.95V ESD Rating Human Body Model Tested per JESD22-A114 3kV Charged Device Model Tested per JESD22-C101E . .1.5kV Machine Model Tested per JESD22-A115 . 200V Latch Up Tested per JESD-78A Class 2, Level A 100mA Thermal Information Thermal Resistance °C/W °C/W DFN Package Notes 4, 5 Maximum Junction Temperature Plastic Package .+150°C Maximum Storage Temperature Range .-65°C to +150°C Ambient Temperature Range -40°C to +85°C Operating Junction Temperature Range -40°C to +85°C Pb-Free Reflow Profile see link below Recommended Operating Conditions Temperature -40°C to +85°C Supply Voltage 3V to 36V CAUTION Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and result in failures not covered by warranty. NOTES is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech Brief TB379 for details. For the “case temp” location is the center of the exposed metal pad on the package underside. Electrical Specifications TA = -40°C to +85°C, VIN = 3V to 36V, unless otherwise noted. Typical values are at TA = +25°C. Boldface limits apply over the junction temperature range, -40°C to +85°C PARAMETER TEST CONDITIONS MIN Note 8 Note 8 UNITS SUPPLY VOLTAGE VIN Voltage Range VIN Quiescent Supply Current VIN Shutdown Supply Current VCC Voltage

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Wide VIN 500mA Synchronous Buck Regulator

ISL85415A

The ISL85415A is a 500mA Synchronous buck regulator with an input range of 3V to 36V. It provides an easy to use, high efficiency low BOM count solution for a variety of applications.

The ISL85415A integrates both high-side and low-side NMOS FET's and features a PFM mode for improved efficiency at light loads. This feature can be disabled if forced PWM mode is desired. The part switches at a default frequency of 500kHz but may also be programmed using an external resistor from 300kHz to 2MHz. The ISL85415A has the ability to utilize internal or external compensation. By integrating both NMOS devices and providing internal configuration options, minimal external components are required, reducing BOM count and complexity of design.

With the wide VIN range and reduced BOM the part provides an easy to implement design solution for a variety of applications while giving superior performance. It will provide a very robust design for high voltage Industrial applications as well as an efficient solution for battery powered applications.

The part is available in a small Pb free 4mmx3mm DFN plastic package with an operation temperature range of -40°C to +85°C

Related Literature
• See AN1859, “ISL85415AEVAL1Z Wide VIN 500mA Synchronous Buck Regulator”
• Wide input voltage range 3V to 36V
• Synchronous operation for high efficiency
• No compensation required
• Integrated High-side and Low-side NMOS devices
• Selectable PFM or forced PWM mode at light loads
• Internal fixed 500kHz or adjustable switching frequency
300kHz to 2MHz
• Continuous output current up to 500mA
• Internal or external soft-start
• Minimal external components required
• Power-good and enable functions available.
• Industrial control
• Medical devices
• Portable instrumentation
• Distributed power supplies
• Cloud Infrastructure

TABLE KEY DIFFERENCES BETWEEN PARTS

PART NUMBER TEMP RANGE °C EN THRESHOLD

PG DELAY

ISL85415
-40°C to +125°C Standard TTL input
10% of soft-start time

ISL85415A -40°C to +85°C High accuracy

NOTE See Electrical specifications for more details on the ISL85415A.

CBOOT 100nF

VOUT

COUT 10µF

L1 22µH

CVIN 10µF
2 SYNC
3 BOOT
4 VIN
5 PHASE
6 PGND

FS 12
11 COMP
10 FB
9 VCC

R3 CVCC
1µF

INTERNAL DEFAULT PARAMETER SELECTION

FIGURE TYPICAL APPLICATION

EFFICIENCY %

VIN = 15V

VIN = 12V

VIN = 5V
Ordering Information

PART NUMBER Notes 1, 2, 3

PART MARKING

TEMP. RANGE °C

PACKAGE Pb-Free

PKG. DWG. #

ISL85415AIRZ
415A
-40 to +85
12 Ld DFN

L12.4x3

ISL85415AEVAL1Z

Evaluation Board

NOTES Add “T” suffix for Tape and Reel. Please refer to TB347 for details on reel specifications. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations . Intersil 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. For Moisture Sensitivity Level MSL , please see device information page for ISL85415A. For more information on MSL please see techbrief TB363.

FN8414.0

July 11, 2013

ISL85415A

Absolute Maximum Ratings

VIN to GND. -0.3V to +42V PHASE to GND. -0.3V to VIN+0.3V DC PHASE to GND. -2V to 43V 20ns EN to GND -0.3V to +42V BOOT to PHASE -0.3V to +5.5V COMP, FS, PG, SYNC, SS, VCC to GND -0.3V to +5.9V FB to GND -0.3V to +2.95V ESD Rating

Human Body Model Tested per JESD22-A114 3kV Charged Device Model Tested per JESD22-C101E . .1.5kV Machine Model Tested per JESD22-A115 . 200V Latch Up Tested per JESD-78A Class 2, Level A 100mA

Thermal Information

Thermal Resistance
°C/W °C/W

DFN Package Notes 4, 5

Maximum Junction Temperature Plastic Package .+150°C

Maximum Storage Temperature Range .-65°C to +150°C

Ambient Temperature Range -40°C to +85°C

Operating Junction Temperature Range -40°C to +85°C

Pb-Free Reflow Profile see link below

Recommended Operating Conditions

Temperature -40°C to +85°C Supply Voltage 3V to 36V

CAUTION Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and result in failures not covered by warranty.

NOTES is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech Brief TB379 for details. For the “case temp” location is the center of the exposed metal pad on the package underside.

Electrical Specifications TA = -40°C to +85°C, VIN = 3V to 36V, unless otherwise noted. Typical values are at TA = +25°C. Boldface limits
apply over the junction temperature range, -40°C to +85°C

PARAMETER

TEST CONDITIONS

MIN Note 8

Note 8 UNITS

SUPPLY VOLTAGE

VIN Voltage Range VIN Quiescent Supply Current VIN Shutdown Supply Current VCC Voltage

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived ISL85415AIRZ Datasheet file may be downloaded here without warranties.

Datasheet ID: ISL85415AIRZ 639201