Part Datasheet Review and Update

adrian95

adrian95

Review all available part information (MPN, package, pin count, description, properties). If no datasheet URL is already set, search the web for the official datasheet and update the part's Datasheet property with the URL. Then cross-check the schematic symbol, footprint, and pin descriptions against the datasheet. Summarize key specs and flag any mismatches.

flux

I’ll review the part metadata, find and set the official datasheet if missing, then cross-check symbol, footprint, and pin descriptions against the datasheet.

flux

Reviewed the part against the official Analog Devices datasheet; the Datasheet URL was already set correctly, so no update was needed. Key issue: the project symbol/footprint has 26 pins/pads, but MAX25240AFFF/VY+ is a 22-pin FC2QFN part, and the package property is incorrectly set to TO.
Full findings are saved in the project document: part-datasheet-review-max25240afffvyplus.
Suggested next steps:
  1. Remove invalid pins/pads 23–26.
  2. Update package metadata to 22 FC2QFN / F224A4FY+1.
  3. Regenerate the footprint from ADI land pattern 90-100137.
  4. Populate pin descriptions from the datasheet pin table.
Fix and verify part
Fix symbol footprint
Update package metadata
Regenerate footprint
Run final review

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Part Datasheet Review — MAX25240AFFF/VY+
Source reviewed
  • Project: MAX25240AFFF_VY+
  • Project description: Automotive 2V to 36V, 6A Buck-Boost Converters
  • Manufacturer Part Number property: MAX25240AFFF/VY+
  • Manufacturer Name property: Analog Devices
  • Datasheet URL property: https://www.analog.com/MAX25240/datasheet
  • Official datasheet reviewed: Analog Devices MAX25239/MAX25240 Rev. 11, 9/24
Datasheet status
The part already had an official Analog Devices datasheet URL set, so no Datasheet URL update was required.
Key datasheet specs
  • Function: synchronous automotive buck-boost converter with integrated H-bridge switches
  • Input voltage: 2V to 36V operating range; initial startup spec 4.5V to 36V; tolerates input transients to 42V
  • Output current: up to 6A depending on operating conditions, component selection, VIN/VOUT ratio, and thermal limits
  • Variant-specific ordering info for MAX25240AFFF/VY+:
    • Typical current limit: 8.2A
    • Fixed output voltage option: 11.5V
    • Adjustable output voltage range: >6.5V, adjustable up to 20V through FB divider
    • Switching frequency: 400kHz
  • Temperature / qualification: -40°C to +125°C Grade 1 automotive; /V denotes automotive-qualified; + denotes Pb-free/RoHS-compliant
  • Quiescent current: 95µA typical standby, 10µA maximum shutdown
  • VCC: internal 1.8V regulator output; bypass with minimum 4.7µF ceramic capacitor
  • Protection / control: PGOOD open-drain output, UVLO, OVP, cycle-by-cycle current limit, thermal shutdown, SPS spread-spectrum enable, SYNC input for external synchronization or skip/PWM mode control
Correct package and pinout from datasheet
  • Package: 22-pin FC2QFN, 4.25mm × 4.25mm × 0.75mm
  • Package Code: F224A4FY+1
  • Outline Number: 21-100399
  • Land Pattern Number: 90-100137
22-pin MAX25240AFF pin map

Table

PinNameDatasheet function summary
1BST1Bootstrap capacitor connection for LX1; connect 0.1µF between LX1 and BST1
2, 3SUPConverter supply and internal VCC LDO input; bypass SUP to PGND1 with ≥4.7µF ceramic
4NCNot connected
5, 6PGND1Power ground for buck low-side FET LS1
7LX1Switching node 1; connect to one side of power inductor
8LX2Switching node 2; connect to other side of power inductor
9, 10PGND2Power ground for boost low-side FET LS2
11NCNot connected
12, 13OUTBuck-boost converter output
14BST2Bootstrap capacitor connection for LX2; connect 0.1µF between LX2 and BST2
15ENHigh-voltage tolerant enable input
16FBFeedback input for fixed/adjsutable output setting
17COMPError amplifier output; connect compensation network to AGND
18SPSSpread-spectrum enable input
19SYNCExternal clock sync and skip/PWM mode control input
20PGOODOpen-drain power-good indicator
21VCCInternal 1.8V regulator output; bypass with ≥4.7µF to ground
22AGNDAnalog ground; tie AGND/PGND1/PGND2 at a single star point
Cross-check results
Metadata / properties
  • Mismatch: Project context reports Pads: 26, but datasheet package is 22-pin FC2QFN.
  • Mismatch: Project property Package or Case Code is set to TO; datasheet package should be 22 FC2QFN, package code F224A4FY+1.
  • OK: Manufacturer Name matches Analog Devices.
  • OK: MPN MAX25240AFFF/VY+ matches the datasheet ordering table.
  • OK: Datasheet URL points to the official Analog Devices datasheet.
Schematic symbol
  • Mismatch: Symbol currently has 26 terminal components, while the datasheet pinout has 22 pins.
  • Mismatch: Pins 23–26 exist in the symbol but do not exist in the datasheet:
    • Pin 23: PGND1_3
    • Pin 24: PGND2_3
    • Pin 25: EN_2
    • Pin 26: AGND_2
  • Mismatch: Pin descriptions are not populated; every terminal shows Pin Type: Unspecified and lacks datasheet function descriptions.
  • Mostly OK: Pins 1–22 names broadly match the 22-pin datasheet pin map, including duplicated supply/ground/output pins where expected.
Footprint
  • Mismatch: Footprint contains 26 pads, but the official MAX25240AFFF/VY+ package is 22-pin FC2QFN.
  • Cannot fully verify geometry from available layout output: The layout inspection exposed pad node names but not numeric pad geometry. However, the pad count mismatch alone is sufficient to flag the footprint as incompatible with the official land pattern.
  1. Remove invalid schematic terminals/pads 23–26: PGND1_3, PGND2_3, EN_2, AGND_2.
  2. Update package metadata from TO to 22 FC2QFN / F224A4FY+1.
  3. Replace or regenerate the footprint using Analog Devices land pattern 90-100137 / outline 21-100399.
  4. Populate pin descriptions and pin types from the datasheet table above.
  5. Re-run a part review after correcting the symbol and footprint.

  • Source reviewed

  • Datasheet status

  • Key datasheet specs

  • Correct package and pinout from datasheet

  • 22-pin MAX25240AFF pin map

  • Cross-check results

  • Metadata / properties

  • Schematic symbol

  • Footprint

  • Recommended fixes

Documents

Assets

MAX25240AFFF_VY+

MAX25240AFFF_VY+

MAX25240AFFF_VY+.stp3D Model
kicad_mod

MAX25240AFFF_VY+

MAX25240AFFFVY.kicad_modFootprint
MAX25240AFFFVY+-thumb.png

MAX25240AFFFVY+-thumb.png

MAX25240AFFFVY+-thumbThumbnail

MAX25240AFFF/VY+

MAX25240AFFF/VY+ thumbnail
Buck-Boost Switching Regulator IC Positive Adjustable (Fixed) 6.5V (11.5V) 1 Output 6A 22-PowerWFQFN
The MAX25239/MAX25240 are small, synchronous, buck-boost converters with integrated H-bridge switches. These ICs provide a fixed-output regulation voltage and an externally adjustable output voltage in the 3V to 20V range with an input voltage above, below, or equal to the output regulation voltage. The ICs have typical 8.2A and 10A input current limit options and can support continuous load currents up to 6A depending on the input-to-output voltage ratio and operating frequency. It also has a wide input voltage range of 2V to 36V. The MAX25239/MAX25240 have three switching frequency options: 2.1MHz, 400kHz, and 200kHz. The 2.1MHz high switching frequency allows small external components and reduced output ripple, and guarantees no AM band interference, while the 400kHz or 200kHz switching frequency offers better efficiency and relieves the power consumption concern. The SYNC input allows three operation modes: skip mode with ultra-low quiescent current, forced fixed-frequency PWM operation, and synchronization to an external clock. The IC also includes spread-spectrum frequency modulation to minimize EMI interference. The MAX25239/MAX25240 feature a power-OK (POK) indicator, undervoltage lockout, overvoltage protection, cycle-by-cycle current limit, and thermal shutdown. The ICs are available in small, 4.25mm x 4.25mm x 0.75mm, 22-pin FC2QFN and 5.00mm x 5.00mm x 0.75mm, 18- pin FCQFN packages.
Key Features Wide 2 V to 36 V input voltage range Synchronous buck-boost topology for seamless step-up and step-down conversion Delivers up to 6 A continuous output current Adjustable output voltage from 3 V to 20 V (device variant includes fixed output configuration options) High conversion efficiency with integrated low-RDS(ON) MOSFETs 400 kHz switching frequency with spread-spectrum option for reduced EMI Very low 95 µA quiescent current in standby and 10 µA shutdown current Integrated protection features including overvoltage, short-circuit, thermal shutdown, and undervoltage lockout (UVLO) Power-Good (PGOOD) output for power monitoring AEC-Q100 qualified for automotive applications Operating junction temperature range: −40°C to +150°C Compact 22-pin FC2QFN (4.25 × 4.25 mm) package
#MAX25240AFFFVY #AnalogDevices #BuckBoostConverter #DCDCConverter #PowerManagement #AutomotiveElectronics #AECQ100 #SwitchingRegulator #EmbeddedSystems #AutomotivePower

Properties

MAX25240AFFF/VY+

Analog Devices Inc./Maxim Integrated

Integrated Circuit

analog.com/MAX25240/datasheet

IC

22 FC2QFN

parametric-v1

creativecommons.org/licenses/by/4.0/

Pricing & Availability

DPN

Stock

Qty 1

3

0

$5.124–$8.4024

2

0

$0.00

1

0

$8.6117

1

784

$9.00

1

980

$4.7001

Controls