描述

Original New TI TPS40305 TPS40305DRCR MARKING 0305 68J P1V7 DC-DC buck regulator IC FOR Bitaxe Max BM1397 / Bitaxe Ultra BM1366 / Bitaxe Supra BM1368

Bitaxe Max BM1397:

Goals：
1. Standalone: can mine directly to your pool over WiFi. No External computer needed.
2. Embedded: low cost, low maintenance, high availability, high reliability, low power.
3. ASIC: based on the very efficient BM1397 from Bitmain.
4. Versatile: solo/pool mining, autotune power/heat/efficiency.

Features：
1. ESP32-S3-WROOM-1 wifi microcontroller on board
2. TI TPS40305 buck regulator steps down the 5V input to power the BM1397
3. Maxim DS4432U+ current DAC digitally adjusts the BM1397 core voltage from 0.04V to 2.4V
4. TI INA260 power meter measures the input voltage and current of the miner
5. Microchip EMC2101 measures the BM1397 internal diode temperature. Also PWM controls the fan and monitors tach output.
6. Two sweet RGB status LEDs
7. 0.91″ SSD1306 OLED I2C Display Module

Bitaxe Ultra BM1366

Goals
1. Standalone: can mine directly to your pool over WiFi. No External computer needed.
2. Embedded: low cost, low maintenance, high availability, high reliability, low power.
3. ASIC: based on the very, very efficient BM1366 from Bitmain.
4. Versatile: solo/pool mining, autotune power/heat/efficiency.

Features
1. ESP32-S3-WROOM-1 wifi microcontroller on board
2. TI TPS40305 buck regulator steps down the 5V input to power the BM1366
3. Maxim DS4432U+ current DAC digitally adjusts the BM1366 core voltage from 0.04V to 2.4V
4. TI INA260 power meter measures the input voltage and current of the miner
5. Microchip EMC2101 PWM controls the fan and monitors tach output. BM1366 doesn’t support die temp, but we have it placed super close to the ASIC so we can use the internal temp feature.
6. 0.91″ SSD1306 OLED I2C Display Module