component

TX4144

Public Made by Adom

by adom

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

componentpower management (pmic)tx4144factory-2.0.0extractor-text
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TX4144

XDS · DC-DC Converters · SOP-8

TX4144 from XDS, in a SOP-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 VIN power_in Chip supply input; the datasheet gives a 6-60 V operating input range and an absolute maximum of -0.3 to 65 V for the VIN and EN pins.
2 EN input Enable pin with 1.1 V rising and 0.8 V falling thresholds (300 mV hysteresis) and 100 µA maximum sink current; it must not be left floating and can be tied to VIN if enable control is not used.
3 FS input Switching-frequency setting pin: an external resistor to ground sets fSW, floating gives 140 kHz typical, the recommended maximum is 500 kHz, and the absolute range is -0.3 to 6 V.
4 FB input Feedback input compared against the 0.82 V internal reference (0.80-0.84 V) to set the output through the external R1/R2 divider, with an absolute range of -0.3 to 6 V.
5 VSS power_in Ground pin, to be connected with a large copper area together with VIN and SW to improve heat dissipation and long-term stability.
6 VSS power_in Ground pin, to be connected with a large copper area together with VIN and SW to improve heat dissipation and long-term stability.
7 SW output Switch output driving the inductor, with an absolute range of -0.3 V to VIN+0.3 V; its trace should be kept short and away from the FB feedback trace.
8 SW output Switch output driving the inductor, with an absolute range of -0.3 V to VIN+0.3 V; its trace should be kept short and away from the FB feedback trace.

Key specifications

Parameter Value
Manufacturer XDS
Package SOP-8
Category Power Management (PMIC)
Pins 8

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Feedback voltage VFB 0.8 0.82 0.84 V 6V< VIN < 60V 4
Feedback current IFB 0.1 μA VFB = 0.85V 4
SW switch leakage current ISW_LKG 1 μA VEN = 0V, VSW = 0V 4
Current limit threshold ILIM 2.4 A 4
Oscillator frequency (FS floating) fSW 140 kHz FS 悬空 4
Oscillator frequency (FS to GND via 470kΩ) fSW 450 kHz FS 接 470kΩ 到地 4
Maximum duty cycle DMAX 95 % VFB = 0.6V 4
Minimum on time τON 100 ns 4
Undervoltage lockout rising voltage UUVLO_R 5.5 V 4
Undervoltage lockout hysteresis voltage UUVLO_HYS 700 mV 4
EN rising threshold VEN_R 1.1 V 4
EN falling threshold VEN_F 0.8 V 4
EN hysteresis threshold VEN_HYS 300 mV 4
EN output current IEN 0.1 μA VEN = 2V 4
VIN shutdown current IS 1 μA VEN = 0V 4
VIN quiescent current IQ 0.15 0.2 mA VEN = 2V，VFB = 1V 4
Thermal shutdown temperature TSD 165 oC 4
Thermal shutdown hysteresis TSD_HYS 20 oC 4
VIN, EN pin operating voltage range VIN -0.3 65 V 3
SW pin operating voltage range (printed max is VIN+0.3, not numeric) VSW -0.3 V 3
FB, FS pin operating voltage range Vmax -0.3 6 V 3
EN pin sink current IEN_SINK 100 μA 3
Operating temperature range TA -40 85 oC 3
SOP8 package maximum power dissipation PSOP8 0.8 W 3
Storage temperature range TSTG -45 150 oC 3
Soldering temperature range TSD 260 oC 时间小于30秒 3
Electrostatic discharge voltage (human body model) VESD 2000 V 人体模型 3
Input voltage range (from features list, not a formal recommended-operating table) VIN 6 60 V 1

CAD (KiCad official)

  • Symbol: TX4144
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: tx4144-etched.step / tx4144-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tx4144.step / tx4144.glb are the bare package body.

Provenance

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

  • Datasheet: XDS datasheet (9 pp, sha256 b31d4eae54563c6a, retrieved 2026-10-18, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • 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