Part Review and Datasheet Analysis

flux

AP63357QZV-7 part review
I reviewed the part metadata already present, confirmed a datasheet URL is already set, scanned the datasheet at PDF, and cross-checked the current symbol and footprint.
1) Current part-project information Project metadata

Table

FieldCurrent valueDatasheet cross-check
ManufacturerDiodesMatches
MPNAP63357QZV-7Matches
DescriptionBuck Switching Regulator IC Positive Adjustable 0.8V 1 Output 3.5A 13-PowerVFDFNConsistent
Datasheet URLSetPresent already, so no update was needed
Package in description13-PowerVFDFNDatasheet gives V-DFN3020-13/SWP (Type A1), 3 mm x 2 mm, wettable flanks
Current symbol terminals

Table

TerminalPin numberCurrent pin typeDatasheet function
VIN1UnspecifiedPower input
EN2UnspecifiedEnable / UVLO input
FB3UnspecifiedFeedback input
COMP4UnspecifiedCompensation node
PG5UnspecifiedOpen-drain power-good output
BST6UnspecifiedBootstrap supply
NC7UnspecifiedNo connect
GND8UnspecifiedPower ground
SW9UnspecifiedSwitching node
Current footprint findings

Table

ItemCurrent footprint
Footprint assetAP63357QZV7.kicad_mod
3D modelAP63357QZV-7.stp present
Functional pad count9 pads
Functional pad namesVIN, EN, FB, COMP, PG, BST, NC, GND, SW
Footprint package textV-DFN3020-13/SWP (Type A1)
2) Datasheet summary Core part metadata

Table

ParameterValue
DeviceAP63357Q
FunctionAutomotive-compliant synchronous buck converter
Input range3.8 V to 32 V
Output current3.5 A continuous
Reference voltage0.8 V ±1%
Switching frequency450 kHz typ
PackageV-DFN3020-13/SWP (Type A1)
Body size3.00 mm x 2.00 mm
Feature noteWettable flanks
Special features

Table

FeatureDatasheet detail
Light-load modePFM/PWM
EMI reductionFrequency Spread Spectrum
Low IQ22 µA typ
Enable threshold1.18 V typ
Soft-start4 ms typ
PG outputOpen-drain with 5 MΩ internal pull-up
ProtectionUVLO, UVP, cycle-by-cycle peak current limit, thermal shutdown
Low-dropout modeSupported
Absolute maximum ratings

Table

ParameterRating
VIN-0.3 V to +35.0 V DC, -0.3 V to +40.0 V for 400 ms
EN-0.3 V to +35.0 V
FB-0.3 V to +6.0 V
COMP-0.3 V to +6.0 V
PG-0.3 V to +6.0 V
BSTVSW - 0.3 V to VSW + 6.0 V
SW-0.3 V to VIN + 0.3 V DC, -2.5 V to VIN + 2.0 V for 20 ns
Storage temp-65 °C to +150 °C
Junction temp+170 °C
Lead temp+260 °C
ESD HBM±2000 V
ESD CDM±1000 V
Recommended operating conditions

Table

ParameterMinMax
VIN3.8 V32 V
VOUT0.8 VVIN
Ambient temperature-40 °C+125 °C
Junction temperature-40 °C+150 °C
Key electrical characteristics

Table

ParameterMinTypMax
Shutdown current-0.6 µA-
Quiescent current-22 µA-
POR rising threshold3.3 V3.5 V3.6 V
UVLO falling threshold-3.08 V-
High-side MOSFET RDS(on)-74 mΩ-
Low-side MOSFET RDS(on)-40 mΩ-
HS peak current limit4.0 A5.0 A6.0 A
LS valley current limit3.2 A4.2 A5.2 A
Oscillator frequency400 kHz450 kHz500 kHz
Minimum on-time-100 ns-
Feedback voltage0.792 V0.800 V0.808 V
EN high threshold1.15 V1.18 V1.21 V
EN low threshold1.02 V1.08 V1.14 V
EN input current at 1.5 V-5.5 µA-
EN input current at 1.0 V1.0 µA1.5 µA2.0 µA
Soft-start time-4 ms-
Thermal shutdown-+170 °C-
Thermal shutdown hysteresis-+25 °C-
Pin descriptions

Table

PinNumberDescription
VIN1Power input for IC and MOSFETs; bypass to GND with suitable capacitor
EN2Enable input; high = on, low = off; can be tied to VIN or left floating; used for UVLO programming
FB3Feedback sensing terminal for output divider
COMP4Compensation node; tie to GND for internal compensation or use external RC network
PG5Open-drain power-good output with internal 5 MΩ pull-up
BST6Bootstrap supply for high-side gate driver; use 100 nF from BST to SW
NC7No internal connection; may be tied to another pin or left floating
GND8Power ground
SW9Switching node; connect output LC filter from here to load
Package dimensions

Table

DimensionValue
D2.00 mm BSC
E3.00 mm BSC
A0.80 mm to 0.90 mm
A10.00 mm to 0.05 mm
b0.15 mm to 0.25 mm
e0.45 mm BSC
L0.35 mm to 0.45 mm
L10.55 mm to 0.65 mm
L21.475 mm to 1.575 mm
Suggested pad layout from datasheet

Table

Layout parameterValue
C0.45 mm
G0.175 mm
X0.60 mm
X10.80 mm
X20.30 mm
X32.30 mm
Y0.30 mm
Y11.450 mm
Y21.725 mm
Y32.825 mm
3) Symbol and footprint cross-check What matches

Table

CheckResultNotes
MPNPassAP63357QZV-7 matches datasheet ordering info
Package familyPassFootprint text matches V-DFN3020-13/SWP (Type A1)
Functional pin countPassDatasheet functional pins are 9, and project symbol/footprint both implement 9
Pin-number mappingPass1 VIN, 2 EN, 3 FB, 4 COMP, 5 PG, 6 BST, 7 NC, 8 GND, 9 SW all match
Pad geometryPassCurrent footprint pad sizes align with datasheet suggested values: 0.30 x 0.60 mm, 0.80 x 1.450 mm, 0.30 x 1.725 mm
3D asset presencePassSTEP model exists
Issues and risk flags

Table

SeverityFindingWhy it matters
MediumAll symbol terminals are set to Unspecified pin typeThis weakens ERC quality and can hide connection mistakes, especially for PG, EN, VIN, GND, and SW
LowPackage naming can look inconsistent: project description says 13-PowerVFDFN, datasheet says V-DFN3020-13/SWPThis could confuse part selection or review, even though the footprint itself appears correct
LowNo richer per-pin descriptions are encoded in the current symbolNot a manufacturing issue, but it makes reuse and review weaker
Important clarification

Table

ItemConclusion
“13-pin package” vs 9 implemented padsNot necessarily a defect. The datasheet’s functional pin table contains 9 electrical pins, and the current symbol/footprint implements those 9 correctly. The package designation includes the SWP/wettable-flank package style, so I do not see evidence of a missing electrical pad from the current data.
4) Bottom line

Table

AreaVerdict
Datasheet availabilityGood
Metadata completenessGood, but package naming could be normalized
Symbol pin mappingCorrect
Footprint/package matchCorrect from the available footprint data
Manufacturing riskNo obvious pad-count or pin-map issue found
Main improvement neededAssign correct pin electrical types and add fuller symbol metadata
Recommended fixes

Table

TerminalRecommended pin type
VINPower In
ENInput
FBInput
COMPPassive or Input
PGOutput
BSTPower In or Passive
NCNot Connected
GNDGround
SWPower Out
If you want, I can turn this into a compact part QA checklist file for this part project.
Set pin types
Review ERC issues
Normalize package name
Export QA report

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Documents

    Documents are markdown text files which describe project goals, capture details, or even simulation outputs.

    Assets

    AP63357QZV-7

    AP63357QZV-7

    AP63357QZV-7.stp3D Model

    AP63357QZV-7

    AP63357QZV-7 Symbol.svgDefault
    AP63357QZV-7-thumb.png

    AP63357QZV-7-thumb.png

    AP63357QZV-7-thumbThumbnail

    AP63357QZV-7

    AP63357QZV7.kicad_modFootprint

    AP63357QZV-7

    AP63357QZV-7 thumbnail
    Buck Switching Regulator IC Positive Adjustable 0.8V 1 Output 3.5A 13-PowerVFDFN #CommonPartsLibrary #IntegratedCircuit #PowerManagement #switching-regulator #AP63357

    Properties

    AP63357QZV-7

    Diodes

    Integrated Circuits

    diodes.com/assets/Datasheets/AP63356Q_AP63357Q.pdf

    IC

    creativecommons.org/licenses/by/4.0/

    Pricing & Availability

    DPN

    Stock

    Qty 1

    2

    0–3K

    $0.4914–$0.5115

    1

    974

    $0.70

    1

    17K

    $1.10

    1

    3K

    $1.024

    1

    3K

    $0.5132

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