component
LM2842YMKX-ADJL
Public Made by Adomby adom
Texas Instruments DC-DC Converters, TSOT-23-6L. 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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Contents
README
markdownLM2842YMKX-ADJL
Texas Instruments · DC-DC Converters · TSOT-23-6L
LM2842YMKX-ADJL from Texas Instruments, in a TSOT-23-6L. 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 | CB | input | SW FET gate bias voltage pin; connect the CBOOT capacitor between CB and SW (max 7 V above SW voltage). |
| 2 | GND | power_in | Ground connection. |
| 3 | FB | input | Feedback pin that sets the divider ratio with VOUT = VFB(1 + R1/R2), using resistors from 100 Ω to 10 kΩ to avoid input bias errors. |
| 4 | SHDN | input | Logic-level shutdown input: pull to GND to disable, pull high to enable, tie to VIN if unused and do not allow to float (abs max −0.3 V to VIN + 0.3 V, below 45 V). |
| 5 | VIN | power_in | Power input voltage pin with a 4.5 V to 42 V normal operating range. |
| 6 | SW | output | Power FET output; connect to the inductor, diode and CBOOT capacitor (rated up to 42 V recommended, 45 V absolute max). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSOT-23-6L |
| Category | Power Management ICs |
| Pins | 6 |
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 | VIN | -0.3 | 45 | V | 4 | ||
| SHDN voltage | SHDN | -0.3 | 45 | V | (VIN + 0.3 V) < 45 V | 4 | |
| SW voltage | SW | -0.3 | 45 | V | 4 | ||
| CB voltage above SW voltage | CB | 7 | V | 4 | |||
| FB voltage | FB | -0.3 | 5 | V | 4 | ||
| Maximum junction temperature | TJ(MAX) | 150 | °C | 4 | |||
| Storage temperature | Tstg | -65 | 150 | °C | 4 | ||
| ESD HBM | V(ESD) | -2000 | 2000 | V | Human-body model per ANSI/ESDA/JEDEC JS-001 | 4 | |
| Operating junction temperature | TJ | -40 | 125 | °C | 4 | ||
| Input voltage | VIN | 4.5 | 42 | V | 4 | ||
| SW voltage | SW | 42 | V | 4 | |||
| Junction-to-ambient thermal resistance | RθJA | 121 | °C/W | DDC (SOT) 6 pins | 4 | ||
| Junction-to-case (top) thermal resistance | RθJC(top) | 94 | °C/W | DDC (SOT) 6 pins | 4 | ||
| Quiescent current, shutdown | IQ | 16 | 40 | µA | SHDN = 0 V; max at TJ = −40°C to 125°C | 5 | |
| Quiescent current, ON not switching | IQ | 1.3 | 1.75 | mA | Device ON, not switching; max at TJ = −40°C to 125°C | 5 | |
| Quiescent current, ON no load | IQ | 1.35 | 1.85 | mA | Device ON, no load; max at TJ = −40°C to 125°C | 5 | |
| Switch ON resistance | RDSON | 0.9 | 1.6 | Ω | Includes bond wires, VIN to SW; max at TJ = −40°C to 125°C | 5 | |
| Switch leakage current | ILSW | 0 | 0.5 | µA | VIN = 42 V; max at TJ = −40°C to 125°C | 5 | |
| Switch current limit | ICL | 1.15 | 1.7 | A | LM2842, at 0% duty cycle; max at TJ = −40°C to 125°C | 5 | |
| Feedback pin bias current | IFB | 0.1 | 1 | µA | LM284[0,1,2]; max at TJ = −40°C to 125°C | 5 | |
| FB pin reference voltage | VFB | 0.747 | 0.765 | 0.782 | V | min/max at TJ = −40°C to 125°C | 5 |
| Minimum ON-time | tON(min) | 100 | 150 | ns | max at TJ = −40°C to 125°C | 5 | |
| Minimum OFF-time | tOFF(min) | 104 | 200 | ns | Y option; max at TJ = −40°C to 125°C | 5 | |
| Switching frequency | fSW | 0.95 | 1.25 | 1.5 | MHz | Y option, VFB = 0.5 V; min/max at TJ = −40°C to 125°C | 5 |
| Switching frequency, foldback | fSW | 0.35 | MHz | Y option, VFB = 0 V | 5 | ||
| Maximum duty cycle | DMAX | 81 | 87 | % | Y option; min at TJ = −40°C to 125°C | 5 | |
| UVLO on threshold | VUVP | 3.7 | 4.4 | V | On threshold; max at TJ = −40°C to 125°C | 6 | |
| UVLO off threshold | VUVP | 3.25 | 3.5 | V | Off threshold; min at TJ = −40°C to 125°C | 6 | |
| Shutdown threshold, device ON | VSHDN | 1 | 2.3 | V | Device ON; max at TJ = −40°C to 125°C | 6 | |
| Shutdown threshold, device OFF | VSHDN | 0.3 | 0.9 | V | Device OFF; min at TJ = −40°C to 125°C | 6 | |
| Shutdown pin input bias current | ISHDN | 0.05 | 1.5 | µA | VSHDN = 2.3 V; max at TJ = −40°C to 125°C | 6 | |
| Shutdown pin input bias current | ISHDN | 0.02 | 1.5 | µA | VSHDN = 0 V; max at TJ = −40°C to 125°C | 6 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper | to the FB pin, and away from the inductor to minimize coupling noise into the feedback pin. The input bypass capacitor CIN must be placed close to the VIN pin. This reduces copper trace resistance, wh | 16 |
CAD (KiCad official)
- Symbol:
LM2842YMKX-ADJL - Footprint:
Package_TO_SOT_SMD:TSOT-23-6 - 3D model: TSOT-23-6L (KiCad packages3D, STEP)
- 3D model files:
lm2842ymkx-adjl-etched.step/lm2842ymkx-adjl-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2842ymkx-adjl.step/lm2842ymkx-adjl.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (26 pp, sha256
bb2b63139f205e20, retrieved 2026-10-27, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).