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Texas Instruments LM26400YSDE | Demoboard LM26400YEVAL
Dual 2A, 500kHz Wide Input Range Buck Regulator
Overview
| Topology | Buck Converter |
| Input voltage | 5-20 V |
| Output 1 | 2.5 V / 2 A |
| Output 2 | 1.2 V / 2 A |
| IC revision | B |
Description
The LM26400Y demonstration board was designed to provide two 2A outputs at 1.2V and 2.5V respectively. It uses the ETSSOP package option of the LM26400Y for easier probing. The design emphasizes on the compactness of the LM26400Y PCB layout and is thermally optimized. The total solution size is about 20mm by 30mm. The board supports the conversion from an input voltage ranging from 5V to 20V down to output voltages of 1.2V and 2.5V. With the availability of a separate 5V rail and a couple of small bootstrap diodes, the board also supports an input voltage down to 3.3V with 2A output currents. The EN pins are pulled up to VIN by default for easy evaluation but can also be easily controlled by external logic.
Features
Input voltage range of 3-20VDual 2A outputOutput voltage down to 0.6VInternal compensation500kHz PWM frequencySeparate enable pinsSeparate soft start pinsFrequency foldback protection175mΩ NMOS switchIntegrated bootstrap diodesOver-current protectionETSSOP and LLP packagesThermal shutdown
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(µH) | IRP,40K(A) | ISAT,10%(A) | ISAT,30%(A) | RDC(mΩ) | fres(MHz) | Material | Interface Type | Type | Variant | Gender | Pins | Mount | PCB Thickness(mm) | IR(A) | Working Voltage(V (AC)) | Packaging | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-HCI SMT Flat Wire High Current Inductor, 5.5 µH, 12 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | Inductance5.5 µH | Performance Rated Current12 A | Saturation Current @ 10%4.5 A | Saturation Current @ 30%12 A | DC Resistance10.3 mΩ | Self Resonant Frequency30 MHz | MaterialSuperflux | – | – | – | – | Pins2 | MountSMT | – | – | – | – | ||||
 | WR-USB Mini/Micro Connectors, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-USB Mini/Micro Connectors | – | – | – | – | – | – | – | Interface TypeType AB | TypeHorizontal | Variantwith Pads | GenderReceptacle | Pins5 | MountSMT | PCB Thickness1.6 mm | Rated Current1 A | Working Voltage30 V (AC) | PackagingTape and Reel |