LM26400YMHX
The LM26400Y is a dual-channel, current-mode synchronous buck regulator delivering 2 A per channel from a 3 V to 20 V input, with output adjustable down to 0.6 V. It switches at 500 kHz and offers light-load efficiency, power-good and pre-bias start-up with a typical quiescent current of 4 mA. Operating from -40 degC to 125 degC, it is used in point-of-load and distributed-power systems.
- Package
- HTSSOP-16
Product overview
The LM26400Y is a dual-channel, current-mode synchronous buck regulator delivering 2 A per channel from a 3 V to 20 V input, with output adjustable down to 0.6 V. It switches at 500 kHz and offers light-load efficiency, power-good and pre-bias start-up with a typical quiescent current of 4 mA. Operating from -40 degC to 125 degC, it is used in point-of-load and distributed-power systems.
- Manufacturer
- TI
- Part number
- LM26400YMHX
- Category
- Power Management
- Package
- HTSSOP-16
- Packaging
- Tape & Reel
- Condition
- New & Original
- Compliance
- RoHS & REACH Compliant
- Lifecycle
- Confirm with manufacturer
- Lead time / MOQ
- Confirm with quotation
Technical parameters
26 parametersConstruction
- AVIN
- 22 V
- VIN
- 20 V
- UVLO Hysteresis TJ = 25°C
- 0.36
- DMIN Minimum Duty Cycle
- 2%
- IQ
- 4
- ISW_LEAK EN1 = EN2 = SWx = 0
- 1
- ΔΦ Feedback Loop Closed. Con
- 170
- VFB_F
- 0.35
- ΔΦ Feedback Loop Closed. Continuous Conduction Mode
- 180 deg
Performance
- SWx Voltage
- 22 V
- BSTx Voltage
- 26 V
- BSTx to SW Voltage
- 6 V
- FBx Voltage
- 3 V
- ENx Voltage
- 22 V
- SSx Voltage
- 3 V
- Junction Temperature
- 150 °C
- Storage Temperature, Tstg
- 150 °C
- Current in FB1 and FB2 Pins
- 0.4
- Peak Current Limit of Internal MOSFET TJ = 25°C
- 3
- ISD Shutdown Current of AVIN Pin EN1 = EN2 = 0
- 2
- Quiescent Current of AVIN Pin (both EN1 = EN2 = 5 V, FB1 =
- 2 = 0.7 V
- IEN EN1 and EN2 Currents (sink or source)
- 5
- SSx Pin Current TJ = 25°C
- 16
- TSD Thermal Shutdown Threshold Junction temperature rise
- 165
- Current in FB1 and FB2 Pins TJ = 25°C
- 0.4
- TSD Thermal Shutdown Threshold Junction temperature rises
- 165 °C
Specifications & documentation
Use the official manufacturer documentation to verify electrical characteristics, package dimensions and operating limits before design approval.
Frequently asked questions
Common pre-quotation questions and selection notes to help you verify key parameters and sourcing before requesting a quote.
How do I verify the part is genuine / avoid counterfeit?
Buy only from authorized or franchised channels. On receipt, check: (1) laser-etched markings that solvent will not remove; (2) batch / lot code consistent between label and device; (3) original reel or tube packaging; (4) request traceability documents (CoC, date code). For critical parts, third-party X-ray / decapsulation testing is recommended.
How do I read the markings / date code on a chip?
Most active ICs use a 4-digit date code YYWW (year + week, e.g. 2345 = 2023 week 45). The top mark is manufacturer logo + base part number + lot code. For SMD code lookup, search by "marking code + package" on AllDataSheet / Octopart / LCSC.
What does the package code mean (TO-220, SOT-23, QFP…)?
Package codes describe the physical form factor and pin layout — critical when sourcing, because electrically equivalent parts in different packages will not fit the PCB. Common: TO-220 (3-terminal power), SOT-23 (3-pin small signal), DIP / SOIC (through-hole / SMD ICs), QFP / QFN (MCUs, processors).
What if my original model is discontinued (EOL / NRND)?
Three options: (1) the manufacturer’s recommended replacement; (2) franchised distributor legacy stock; (3) a functionally compatible cross-brand part — provided pinout and key parameters match. Always evaluate on a real board before mass swap.
What is the minimum order quantity (MOQ) and lead time?
We support both sample and volume orders. Minimum order quantity, stock availability and lead time are confirmed per inquiry — tell us your model and quantity and we will quote. Sample quantities for design validation are supported.
Can I get the datasheet and samples?
The full datasheet is linked on this page. For parts without a direct datasheet, we can locate the manufacturer document on request. Sample requests are supported — contact us with your model and quantity.
Request confirmation of current stock, date code, packaging, price and delivery terms. Product information does not constitute a binding offer; final specifications are confirmed with your quotation.