4 layers50 × 93 mm
SOIC-8-EP
Overview
The TX4139 is a DC DC Converter made by XDS in a SOIC-8-EP package with 9 pins. -40℃~+85℃@(TA) 1 200kHz 2A 4.5V~75V 400uA 800mV~50V Adjustable Buck Buck Built-in No SOIC-8-EP DC-DC Converters ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:TX4138, from EasyEDA), ready for a KiCad board. 8,367 are in stock at JLCPCB (part C329266). 3 open-source boards in 3 repositories on GitHub use it.
Symbol
Footprint
The library has no footprint for this part yet.
From the datasheet
13- Supply, least
- 4.5 V · VIN, recommended operating, min · p. 2
- Supply, most
- 75 V · VIN, recommended operating, max · p. 2
- Supply, absolute maximum
- 76 V · VIN and VILIM, absolute maximum · p. 2
- Works from
- -40 °C · operating ambient temperature, min · p. 2
- Works up to
- 85 °C · operating ambient temperature, max · p. 2
- Junction, hottest
- 150 °C · junction temperature, absolute maximum · p. 2
- Takes working
- 400 µA · quiescent, VEN = 2V, VFB = 1V, VIN = 12V, TA = 25°C, typical · p. 3
- Gives
- 2 A · continuous output current, max · p. 1
- Current limit
- 1.35 A · sense resistor defined current limit, typical · p. 3
- Feedback reference
- 805 mV · FB feedback voltage, 4.5V ≤ VIN ≤ 80V, typical · p. 3
- Switches at
- 200 kHz · oscillator frequency, VFB = 0.6V, typical · p. 3
- Junction to air (ESOIC8)
- 45 K/W · junction to ambient, approximately 42x45mm² of 1 oz copper · p. 2
- Junction to case (ESOIC8)
- 15 K/W · junction to case · p. 2
Parameters
19- Current Limit
- 1.35A
- Features
- Light load efficient mode
- Frequency - Switching
- 200kHz
- Function
- Step-down type
- Junction Temperature(Max)
- 150℃
- Number of Outputs
- 1
- Operating Temperature
- -40℃~+85℃
- Output Current
- 2A
- Output Type
- Adjustable
- Output Voltage
- 800mV~50V
- Quiescent Current
- 400uA
- Reference Voltage
- 805mV
- Switch tube (built-in/external)
- Built-in
- Synchronous Rectifier
- No
- Thermal Resistance(Junction to Ambient)
- 45℃/W
- Thermal Resistance(Junction to Case)
- 15℃/W
- Topology
- Buck
- Voltage - Supply
- 4.5V~75V
- Voltage - Supply(Absolute Max)
- 76V
Order codes
1- TX4139LCSC C329266
Pinout
9| Pin | Name | Type |
|---|---|---|
| 1 | SW | Unspecified |
| 2 | ILIM | Unspecified |
| 3 | VIN | Unspecified |
| 4 | GND | Unspecified |
| 5 | FB | Unspecified |
| 6 | EN | Unspecified |
| 7 | POK | Unspecified |
| 8 | BS | Unspecified |
| 9 | ILIM | Unspecified |
Open-source boards using it
All 3- 4 layers109 × 155.5 mm
Supercap
Twisted-Fields/acorn-robot-electronics
PCB hardware designs in KICAD for Acorn, the precision farming rover from Twisted Fields.
198 parts81 - 2 layers80 × 85 mm
Questions
Is there a KiCad symbol and footprint for the TX4139?
Yes. The symbol is EasyEDA_Cloud:TX4138, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the TX4139?
SOIC-8-EP, with 9 pins.
Where is the TX4139 datasheet?
XDS publishes it: the Datasheet link on this page opens it.
Where can I order the TX4139?
JLCPCB lists it as part C329266, with 8,367 in stock; the sellers' links on this page open their listings.
Which open-source boards use the TX4139?
3 boards in 3 repositories on GitHub; the most starred are listed on this page, with their KiCad files.