component
TX41601
Public Made by Adomby adom
XDS DC-DC Converters, ETSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownTX41601
XDS · DC-DC Converters · ETSSOP-20
TX41601 from XDS, in a ETSSOP-20. 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 | EN | input | Enable pin: the part is enabled when EN is pulled above 1.2 V and enters shutdown when pulled below 1.0 V, with EN absolute maximum of 100 V to GND. |
| 2 | OVLO | input | Overvoltage lockout input, driven from an external divider to set the input overvoltage threshold; when OVLO is pulled above 1.2 V the controller is disabled and does not resume switching until EN is toggled. |
| 3 | OCSET | passive | Current-limit set point: a resistor from this pin to GND sets the positive and negative cycle-by-cycle current-limit thresholds, with OCSET rated to 6 V absolute maximum. |
| 4 | RON | passive | Switching frequency set: a resistor from this pin to GND programs the switching frequency over 50 kHz to 500 kHz, with RON rated to 6 V absolute maximum. |
| 5 | TOFF | input | Programmable shutdown delay: tie to GND for no delay, leave floating for 10 s, or tie to VCC for 20 s; TOFF absolute maximum is 12 V to GND. |
| 6 | SS | passive | Soft-start: an external capacitor from this pin to GND sets the output start-up time, with SS rated to 6 V absolute maximum. |
| 7 | AGND | power_in | Signal ground for the internal reference and control circuitry. |
| 8 | COMP | passive | Error amplifier output: an external resistor and capacitor network is normally connected from this pin to GND to provide loop compensation, with COMP rated to 6 V absolute maximum. |
| 9 | FB | input | Feedback input sensing the output voltage through a resistor divider from output to GND; FB is a sensitive node that should be kept away from SW and BST, and is rated to 6 V absolute maximum. |
| 10 | EXTVCC | power_in | External supply input for the internal VCC LDO; it bypasses the NDRV LDO when above 10 V, must not exceed 30 V or be connected above VIN, and should be tied to GND if unused. |
| 11 | ISNS2 | input | Inductor current sense input 2 (absolute maximum -0.3 V to 65 V to GND, recommended up to 60 V). |
| 12 | ISNS1 | input | Inductor current sense input 1 (absolute maximum -0.3 V to 65 V to GND, recommended up to 60 V). |
| 13 | NDRV | output | Gate drive output for the external pass device (NMOS or NPN) of the VCC NDRV LDO regulator. |
| 14 | VDD | power_out | Internal supply rail for the IC that is regulated to about 9 V to 10 V and requires at least 4.7 µF of capacitance to GND; VDD is rated to 12 V absolute maximum. |
| 15 | PGND | power_in | Power ground that serves as a separate ground for the MOSFET drivers and should be connected to the system power ground plane. |
| 16 | LDRV | output | Output driver for the low-side MOSFET, rated to 10 V recommended and 12 V absolute maximum to GND. |
| 17 | BST | power_in | Bootstrap supply for the high-side driver, which must be held above the input voltage, with a minimum 0.1 µF high-frequency capacitor connected from this pin to SW; BST is rated to 12 V absolute maximum to SW. |
| 18 | SW | passive | Switch node connected to the source of the upper MOSFET and the drain of the lower MOSFET and serving as the return path for the high-side gate driver; SW ranges from -3 V to VIN+0.3 V to GND. |
| 19 | HDRV | output | Output driver for the high-side MOSFET, rated to 10 V recommended and 12 V absolute maximum to SW. |
| 20 | VIN | power_in | Input voltage: operates from 12 V to 100 V (absolute maximum 100 V to GND). |
| 21 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | XDS |
| Package | ETSSOP-20 |
| Category | Power Management (PMIC) |
| Pins | 21 |
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 to GND (绝对最大) | VIN | -0.3 | 100 | V | 4 | ||
| VFB, VOVLO, VUVLO to GND (绝对最大) | VFB, VOVLO, VUVLO | -0.3 | 6 | V | 4 | ||
| VTOFF to GND (绝对最大) | VTOFF | -0.3 | 12 | V | 4 | ||
| VISNS1,2 to GND (绝对最大) | VISNS1,2 | -0.3 | 65 | V | 4 | ||
| VEN to GND (绝对最大) | VEN | -0.3 | 100 | V | 4 | ||
| VEXTVCC to GND (绝对最大) | VEXTVCC | -0.3 | 30 | V | 4 | ||
| VVDD to GND (绝对最大) | VVDD | -0.3 | 12 | V | 4 | ||
| VRON, VOCSET, VSS, VCOMP to GND (绝对最大) | VRON, VOCSET, VSS, VCOMP | -0.3 | 6 | V | 4 | ||
| VLDRV to GND (绝对最大) | VLDRV | -0.3 | 12 | V | 4 | ||
| VHDRV to VSW (绝对最大) | VHDRV | -0.3 | 12 | V | 4 | ||
| VBST to VSW (绝对最大) | VBST | -0.3 | 12 | V | 4 | ||
| 储存温度范围 TST (绝对最大) | TST | -65 | 150 | °C | 4 | ||
| 结温 TJ (绝对最大) | TJ | 150 | °C | 4 | |||
| 引线温度 TL (绝对最大) | TL | 260 | °C | 4 | |||
| ESD 人体模型 HBM | VESD | 2 | kV | HBM 人体模型 | 4 | ||
| ESD 充电器设备模型 CDM | VESD | 500 | V | CDM 充电器设备型号 | 4 | ||
| 输入电压 VIN to GND (推荐工作) | VIN | 12 | 100 | V | 4 | ||
| VFB, VOVLO, VUVLO to GND (推荐工作) | VFB, VOVLO, VUVLO | -0.3 | 5 | V | 4 | ||
| VTOFF to GND (推荐工作) | VTOFF | -0.3 | 10 | V | 4 | ||
| VISNS1,2 to GND (推荐工作) | VISNS1,2 | -0.3 | 60 | V | 4 | ||
| VEN to GND (推荐工作) | VEN | -0.3 | 100 | V | 4 | ||
| VEXTVCC to GND (推荐工作) | VEXTVCC | -0.3 | 30 | V | 4 | ||
| VVDD to GND (推荐工作) | VVDD | -0.3 | 10 | V | 4 | ||
| VRON, VOCSET, VSS, VCOMP to GND (推荐工作) | VRON, VOCSET, VSS, VCOMP | -0.3 | 5 | V | 4 | ||
| VLDRV to GND (推荐工作) | VLDRV | -0.3 | 10 | V | 4 | ||
| VHDRV to VSW (推荐工作) | VHDRV | -0.3 | 10 | V | 4 | ||
| VBST to VSW (推荐工作) | VBST | -0.3 | 10 | V | 4 | ||
| 工作结温范围 TJ (推荐工作) | TJ | -40 | 125 | °C | 4 | ||
| 输入电源工作电压范围 | VIN | 12 | 100 | V | 6 | ||
| 稳压输出电压设定点 | VOUT | 1.2 | 60 | V | 6 | ||
| 反馈电压准确性 | -1.5 | 1.5 | % | 6 | |||
| VDD 稳压器输出 | VDD | 9 | 9.5 | 10 | V | 由 NDRV LDO 供应 | 6 |
| VDD 稳压器输出 | VDD | 9.5 | 10 | 10.5 | V | 由 EXTVCC LDO 供应 | 6 |
| 软启动电流 | ISS | 15 | 20 | 25 | uA | SS = 0 V | 6 |
| 开关频率 FSW | FSW | 50 | 200 | 500 | kHz | Fsw=Vout/(Rh500p) or Fsw=1/(RL50p) | 6 |
| 反馈电压 | VFB | 1.2 | V | 6 | |||
| 静态电流 | IQ | 400 | uA | 开环，VFB = 1.25V，无开关，VIN=48V，TJ=25℃ | 6 | ||
| EN 关断电源电流 | ISHUTDOWN | 20 | uA | Close Loop, VEN=0V, VIN=48V | 6 | ||
| VDD 欠压锁定电压 | VDD_UVLO | 8 | V | -40°C TJ 125°C | 6 | ||
| VDD 欠压迟滞 | VDD_UVLOH | 670 | mV | 6 | |||
| VBST 欠压锁定电压（VBST 增加） | VBST_UVLO | 5.6 | V | -40°C TJ 125°C | 6 | ||
| VBST 欠压迟滞 | VBST_UVLOH | 860 | mV | 6 | |||
| VIN 欠压锁定电压（VIN 增加） | VIN_UVLO | 6.5 | V | 6 | |||
| VIN 欠压迟滞 | VIN_UVLOH | 650 | mV | 6 | |||
| EN 欠压锁定电压（VEN 增加） | VEN_UVLO | 1.2 | V | 6 | |||
| VIN 过压锁定电压参考（VIN 增加） | REFIN_OVP | 1.2 | V | 6 | |||
| 源/灌电流 | I(Source/Sink) | 300 | uA | 6 | |||
| 跨传导 | gm | 3 | mS | 6 | |||
| OCSET 电压 | VOCSET | 1.2 | V | -40°C TJ 125°C | 6 | ||
| 值班是 S1-IN S2 限制 (VLIMH) | VLIMH | 120 | mV | ROCSET = 25k Ohm, VLIMH=1.2/ROCSET*25K/10 | 6 | ||
| 下班是 S1-IN S2 限制 (VLIML) | VLIML | 96 | mV | ROCSET = 25k Ohm, VLIML=1.2/ROCSET*20K/10 | 6 | ||
| 过载保护消隐时间 | TOVERLOAD | 200 | ms | 6 | |||
| 最短准时 | TONMIN | 140 | ns | 6 | |||
| 最短关闭时间 | TOFFMIN | 400 | ns | 6 | |||
| 峰值 HDRV 源电流 | 1 | A | 7 | ||||
| 峰值 HDRV 灌电流 | 2.2 | A | 7 | ||||
| 峰值 LDRV 源电流 | 1.8 | A | 7 | ||||
| 峰值 LDRV 灌电流 | 3.5 | A | 7 | ||||
| 结到环境热阻 | θJA | 40 | °C/W | 4 | |||
| 结壳热阻 | θJC | 23 | °C/W | 4 |
CAD (KiCad official)
- Symbol:
TX41601 - Footprint:
Package_SO:ETSSOP-20-1EP_4.4x6.5mm_P0.65mm_EP3x4.2mm - 3D model: ETSSOP-20 (KiCad packages3D, STEP)
- 3D model files:
tx41601-etched.step/tx41601-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tx41601.step/tx41601.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: XDS datasheet (17 pp, sha256
c126170f7ad9a94e, retrieved 2026-10-09, 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, primaryclaude-haiku-5-5(text), consensusclaude-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).