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MT7201C

Public Made by Adom

by adom

MAXIC Tech LED Drivers, SOT-89-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MT7201C

MAXIC Tech · LED Drivers · SOT-89-5

MT7201C from MAXIC Tech, in a SOT-89-5. 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 LX output Drain of the internal power switch; the absolute maximum LX voltage is -0.3V to +45V and the switch output current (ILX) is limited to 1.25A.
2 GND power_in Ground pin; the datasheet asks for a good ground connection at GND to reduce ground bounce from the fast-switching LX node.
3 ADJ input Multi-function on/off and dimming pin: left floating it gives the nominal average current 0.1/RS (VADJ = 2.38V), VADJ below 0.235V turns the output off, 0.235V to 1.6V gives 20% to 100% dimming, above 1.6V clamps at 100%, and the absolute maximum is -0.3V to +6V.
4 ISENSE input Current-sense input; the sense resistor RS connected between ISENSE and VIN sets the average LED current as IOUTnom = 0.1/RS, with ISENSE absolute voltage limited to +0.3V to -5V relative to VIN and RS minimum 0.1Ω when ADJ is floating.
5 VIN power_in Supply input rated 6V to 40V (absolute maximum -0.3V to +45V) that must be decoupled to GND with at least 4.7µF X7R ceramic capacitance placed as close to the pin as possible.

Key specifications

Parameter Value
Manufacturer MAXIC Tech
Package SOT-89-5
Category Nixie Tube Driver/LED Driver
Pins 5

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
输入电压 VIN VIN 6 40 V 3
平均采样电压 VSENSE VSENSE 95 100 105 mV ISENSE 相对 VIN 3
采样电压迟滞 VSENSEHYS VSENSEHYS -15 15 % 3
ISENSE 管脚输入电流 ISENSE 1.25 10 μA VSENSE=VIN-0.1 3
模拟调光电压范围 VADJ VADJ 0.235 1.6 V 3
低频 PWM 调光占空比范围 DPWM(LF) DPWM(LF) 0.01 1 频率小于500Hz，振幅在1.5V~5.5V 3
最大工作频率时建议占空比 DLX DLX 0.3 0.7 最大工作频率时 3
功率开关最小打开时间 TONmin TONmin 200 ns LX '开' 3
功率开关最小关断时间 TOFFmin TOFFmin 200 ns LX '关' 3
建议最大工作频率 fLXmax fLXmax 1.1 MHz 3
关断电流 IINQoff IINQoff 120 μA ADJ 接地 3
输入电压 VIN (绝对最大) VIN -0.3 45 V 如无特别说明，相对地 2
ISENSE 端电压 VSENSE (绝对最大) VSENSE -5 0.3 V 相对 VIN 2
LX 电压 VLX VLX -0.3 45 V 如无特别说明，相对地 2
ADJ 电压 VADJ (绝对最大) VADJ -0.3 6 V 如无特别说明，相对地 2
功率开关输出电流 ILX ILX 1.25 A 2
功耗 Ptot Ptot 1 W 2
工作温度 TOP TOP -40 105 °C 2
存储温度 TST TST -55 150 °C 2
最高结温 Tj MAX Tj MAX 150 °C 2
ESD 人体模型 ESD(HBM) ESD(HBM) 4 KV 2
PN 结到环境热阻 RθJA RθJA 140 °C/W 2
PWM 信号振幅下限 2 V 7
PWM 信号常用振幅范围 3 5 V 7
VIN 去耦电容最小值 (X7R 陶瓷) 4.7 μF 2
检测电阻 RS 最小值 RS 0.1 Ω ADJ 管脚悬空时 2
推荐电感值范围 L 27 100 μH 7
关断判定持续时间 100 μs ADJ 电压低于 0.21V 7

CAD (KiCad official)

  • Symbol: MT7201C
  • Footprint: Package_TO_SOT_SMD:SOT-89-5
  • 3D model: SOT-89-5 (KiCad packages3D, STEP)
  • 3D model files: mt7201c-etched.step / mt7201c-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mt7201c.step / mt7201c.glb are the bare package body.

Provenance

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

  • Datasheet: MAXIC Tech datasheet (10 pp, sha256 949ba2bd167fc508, retrieved 2026-10-17, 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