component

MT2499A

Public Made by Adom

by adom

Aerosemi DC-DC Converters, ESOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management (pmic)mt2499afactory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 1mo ago
viewers mt2499a: viewers · Ray 1mo ago
mt2499a-etched.glb mt2499a: factory component page (tier=lcsc) · Ray 1mo ago
mt2499a-etched.step mt2499a: factory component page (tier=lcsc) · Ray 1mo ago
mt2499a-hero.glb mt2499a: hero GLB from the etched model (keeps the MPN mark) · Ray 1mo ago
mt2499a-hero.overlay.json Publish 0.1.0 · Ray 1mo ago
mt2499a.glb Publish 0.1.0 · Ray 1mo ago
mt2499a.kicad_mod Publish 0.1.0 · Ray 1mo ago
mt2499a.kicad_sym Publish 0.1.0 · Ray 1mo ago
mt2499a.lbr Publish 0.1.0 · Ray 1mo ago
mt2499a.step Publish 0.1.0 · Ray 1mo ago
package.json Publish 0.1.0 · Ray 1mo ago
page.json mt2499a: specified limits as data (metadata.characteristics, 28 rows from the datasheet) · Ray 25d ago
README.md mt2499a: specified limits as data (metadata.characteristics, 28 rows from the datasheet) · Ray 25d ago

MT2499A

Aerosemi · DC-DC Converters · ESOP-8

MT2499A from Aerosemi, in a ESOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 BS passive Bootstrap pin; a capacitor connected between SW and BS is required to form a floating supply across the high-side switch driver.
2 VIN power_in Power supply input, operating range 4.5V to 21V (absolute maximum -0.3V to 23V).
3 SW power_out Switching node output of the converter (absolute maximum -0.3V to VIN+0.5V).
4 GND power_in Ground.
5 FB input Adjustable version feedback input; connect to the center point of the external resistor divider (0.925V reference, absolute maximum -0.3V to 6V).
6 NC unconnected No connect.
7 EN input Drive to logic-high to enable the IC and to logic-low to disable it and enter micro-power shutdown mode (absolute maximum -0.3V to 23V).
8 NC unconnected No connect.
9 GND power_in Exposed pad (EPAD), connected to ground; connect to a large copper area for cooling.

Key specifications

Parameter Value
Manufacturer Aerosemi
Package ESOP-8
Category Power Management (PMIC)
Pins 9

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Input Voltage Range 4.5 21 V 3
Supply Current in Operation 0.4 0.6 mA VEN=2.0V, VFB=1.1V 3
Regulated Feedback Voltage 0.9 0.925 0.95 V TA = 25°C, 4.5V≤VIN ≤21V 3
OVP 22 V 3
High-Side Switch Leakage Current 0 10 µA VEN=0V, VSW=0V 3
Input Supply Voltage (absolute maximum) -0.3 23 V 2
EN Voltages (absolute maximum) -0.3 23 V 2
FB Voltages (absolute maximum) -0.3 6 V 2
Power Dissipation 2 W 2
Junction Temperature 150 °C Note 2 2
Operating Temperature Range -40 85 °C Listed under Absolute Maximum Ratings 2
Storage Temperature Range -65 150 °C 2
ESD HBM (Human Body Model) 2 kV Human Body Model 2
Supply Current in Shutdown 1 µA VEN =0 or EN = GND 3
High-Side Switch On-Resistance 75 mΩ 3
Low-Side Switch On-Resistance 55 mΩ 3
Upper Switch Current Limit 5.8 A Minimum Duty Cycle 3
Oscillation Frequency 0.34 MHz 3
Maximum Duty Cycle 92 % VFB=0.6V 3
EN Shutdown Threshold Voltage 1.25 V VEN Rising 3
EN Shutdown Threshold Voltage Hysteresis 50 mV 3
Input Under Voltage Lockout Threshold 4.2 V VIN Rising 3
Input Under Voltage Lockout Threshold Hysteresis 100 mV 3
Minimum On-Time 100 nS 3
Soft-Start 1 mS 3
Thermal Shutdown 175 ℃ 3
Thermal Resistance θJC θJC 10 °C/W 2
Thermal Resistance θJA θJA 50 °C/W 2

CAD (KiCad official)

  • Symbol: MT2499A
  • Footprint: Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm
  • 3D model: ESOP-8 (KiCad packages3D, STEP)
  • 3D model files: mt2499a-etched.step / mt2499a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mt2499a.step / mt2499a.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Aerosemi datasheet (10 pp, sha256 4d03ffe332e40048, retrieved 2026-10-09, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF