Renesas ISL85403FRZ
Production
Price and Stock
Authorized Distributors
Non-Authorized Stocking Distributors
Non-Authorized Dealers
| Distributor | SKU | Min | Pkg | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avnet | ISL85403FRZ | 485 | 1470 | 1d | ||||||||
| Newark | ISL85403FRZ | 0 | 750 | |||||||||
| Farnell | ISL85403FRZ | 0 | 1 | 22h | ||||||||
| Component Stockers USA | ISL85403FRZ | 12 | >1wk | |||||||||
| Win Source | WS-ISL85403FRZ | 36,558 | 30 | 22h |
CAD Models
Pin Table
Number
Category
Display Name & Functions
Model Info
| Sourced by | Renesas |
|---|---|
| Date of Release | Aug 13, 2025 |
| IPC Compliant | IPC-7351B |
| Style Guide Revision | Version 1.0 - Nov 1, 2024 |
| Datasheet Source | Version 4.00 - Sep 28, 2020 |
Verification
Based on the style guide and datasheet for this part, three independent electronics engineering experts created:
- 3 versions of the symbol and 2D footprint
- 1 version of the 3D STEP model (STEP format AP-214)
- A colour palette configuration for a manufacturer
All created library files are layer-mapping agnostic and can be easily mapped to your design.
Created symbols and footprints are then compared using the following checks:
Symbol
Automated Checks
- Part number
- Key parameters
- Package code
- Pin names/numbers
- Pin types
Manual Checks
- Pin organization per style guide
Footprint
Automated Checks
- IPC standard
- Silkscreen clearance
- Courtyard excess
- Package outline
- Polarity marking
- Pad size & position verification
3D STEP Model
Manual Checks
- Dimension verification
- Colour palette compliance
- Format compliance
- Mapping orientation to 2D footprint
- Position verification to 2D footprint
A final verification process is performed:
If symbols and footprints match: The part is verified as ECAD Ready
If symbols and footprints don’t match: A Senior Electronics Engineer will review all differences to ensure the part meets the style guide and datasheet requirements
Alternate Parts
This Part
Alternate Parts
Price @ 1000
$ 2.875
$ 2.875
Stock
265,897
170,865
170,865
Authorized Distributors
3
3
3
Case/Package
QFN
QFN
QFN
Number of Pins
20
20
20
Number of Outputs
1
1
1
Max Output Current
2.5 A
4.2 A
4.2 A
Switching Frequency
2.2 MHz
2.2 MHz
2.2 MHz
Min Input Voltage
3 V
3 V
3 V
Max Input Voltage
40 V
40 V
40 V
Min Output Voltage
800 mV
500 mV
500 mV
Max Output Voltage
36 V
36 V
36 V
Efficiency
96 %
-
-
Synchronous Rectifier
Both
Both
Both
Supply Chain
Country of OriginMalaysia
Export Control Classification Number (ECCN) CodeEAR99
Harmonized Tariff Schedule (HTS) Code8540000000
Introduction Date2014-03-12
Lifecycle StatusProduction (Last Updated: 2 months ago)
Manufacturer Lifecycle StatusACTIVE (Last Updated: 2 months ago)
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Descriptions
Descriptions of Renesas ISL85403FRZ provided by its distributors.
ISL85403 Series 40 V 2.2 MHz Buck/Boost SMT Switching Regulator - QFN-20
Switching Voltage Regulators Reg w/FET for Sync Boost/Buck Converter
2.5A Regulator with Integrated High-Side MOSFET for Synchronous Buck or Boost Buck Converter
CURRENT-MODE RoHS Compliant Adjustable Positive Switching Regulator IC 105C 2.2MHz 2.5A 4mm
Manufacturer Aliases
Renesas has several brands around the world that distributors may use as alternate names. Renesas may also be known as the following names:
- Renesas Electronics
- Renesas Electronics America Inc
- Renesas Electronics America
- RENESA
- REN
- RENES
- RENESAS TECHNOLOGY CORP
- RENESAS TECHNOLOGY
- Renesas Electronics Corporation
- RENESAS ELECTRONICS CORP
- RENSAS
- RENASAS
- Renesas / Intersil
- RNS
- RENESAS-PB
- RENESASTEC
- RENESES
- Renesas Technology America
- Renesas Design Germany GmbH
- Renesas / IDT
- RENESASE
- RENESAS TECHNOLOGY HONG KONG
- Renesas Electronics Operations Services Limited
- RENEASAS
- RENESAS/M
Technical Specifications
Physical
Case/PackageQFN
MSL3
MountSurface Mount
Number of Pins20
Number of Terminals20
Technical
Efficiency96 %
Part FamilyISL85403
Max Input Voltage40 V
Max Junction Temperature (Tj)125 °C
Max Operating Temperature105 °C
Max Output Current2.5 A
Max Output Voltage36 V
Max Supply Voltage40 V
Max Switching Frequency500 kHz
Min Input Voltage3 V
Min Operating Temperature-40 °C
Min Output Voltage800 mV
Min Supply Voltage3 V
Nominal Input Voltage12 V
Number of Circuits1
Number of Outputs1
Operating Supply Voltage36 V
Output ConfigurationPositive
Output Current2.5 A
Output TypeAdjustable
Output Voltage36 V
PackagingCut Tape
Quiescent Current300 µA
RAM Size12 kB
Switching Frequency2.2 MHz
Sync/AsyncSynchronous
Synchronous RectifierBoth
Temperature GradeIndustrial
TopologyBuck-Boost
Dimensions
Height900 µm
Height - Seated (Max)1 mm
Length4 mm
Pitch500 µm
Terminal Pitch500 µm
Width4 mm
Documents
Download datasheets and manufacturer documentation for Renesas ISL85403FRZ.
Official Datasheet5 years ago
Compliance
Environmental Classification
Radiation HardeningNo
REACH SVHCYes
RoHSCompliant
Compliance Statements