Hw133v10 Datasheet | 1000+ HIGH-QUALITY |

The HW133V10 (often referenced as HW-133 or HW133) is a compact DC-DC Step-Down (Buck) Converter Module. It is widely used in DIY electronics and robotics to efficiently lower a higher input voltage to a stable, lower output voltage, typically for powering 5V components from 12V or higher sources. Core Functionality

The HW133V10 module is built around a high-frequency switching regulator (often the MP1484EN or similar IC) and an integrated power MOSFET. This design allows it to maintain a small physical footprint while handling significant current with minimal heat generation compared to linear regulators. Technical Specifications Based on common listings for the HW133 buck module series: Input Voltage Range: Typically 4.75V to 23V.

Output Voltage: Adjustable from 0.8V to 20V via an on-board potentiometer. Output Current: Rated for a continuous output of up to 3A.

Switching Frequency: High-frequency operation (approx. 340kHz) allows for the use of small inductors and capacitors. hw133v10 datasheet

Efficiency: Up to 95%, depending on the voltage differential.

Dimensions: Approximately 22mm x 17mm x 4mm, making it one of the smallest high-current modules available. Key Features & Use Cases

Compact Form Factor: Often marketed as a "Mini" or "Micro" buck converter for projects with limited space. The HW133V10 (often referenced as HW-133 or HW133)

Microcontroller Powering: Ideal for providing a stable 5V or 3.3V supply to Arduino, ESP32, or Raspberry Pi boards from battery packs.

Thermal Protection: Usually includes built-in over-temperature shutdown and current limiting. Connection Guide The module typically features four solder pads: IN+: Positive input voltage. IN-: Input ground. OUT+: Positive output voltage (regulated). OUT-: Output ground.

Note: Always use a multimeter to measure and set the output voltage using the potentiometer before connecting it to your sensitive components, as the default factory setting may be higher than your target voltage. Arduino® Nano 33 IoT LM2576HV-12 (similar but 12V fixed – adjust feedback)

8.2 Use Cross-Reference Tools

Try searching these equivalents (electrical similar):

• LM2576HV-12 (similar but 12V fixed – adjust feedback)
• XL4016 (8A version, but same topology)
• TPS54360 (60V, 3.5A, different package)

Part 9: Troubleshooting Common Issues

| Symptom | Possible Cause | Solution (from datasheet app notes) | |---------|----------------|--------------------------------------| | No output voltage | EN pin floating (if active low) | Pull EN to VIN through 100k resistor | | Output voltage = VIN | Internal switch shorted | Replace IC; check inductor saturation | | Output ripple >200 mV | Missing COUT or high ESR | Add low-ESR polymer capacitor (47 µF) | | IC shuts down under load | Thermal or current limit | Reduce load, improve heatsinking | | Output voltage drops at high current | Inductor saturation | Replace with rated >3A saturation current |

10. Protection and Fault Handling

• Overcurrent: internal limit triggers when switch current exceeds spec; behavior may be hiccup (retries) or foldback—refer to device spec.
• Short-circuit: thermal foldback or hiccup prevents excessive heating and battery drain.
• Output disconnect: on EN low the device typically disables switching and places internal MOSFETs off; output may bleed via internal path—use external load if required.

3.3 Key Performance Characteristics

• Line Regulation: ±0.5% (Over full input range)
• Load Regulation: ±1.0% (0A to 3A)
• Efficiency: Up to 92% (at VIN=24V, IOUT=1.5A)
• Output Ripple: 50 mVpp (with proper LC filter)
• Soft-start Time: 5 ms (Internal)

3.1 Absolute Maximum Ratings (TA = 25°C)

| Parameter | Symbol | Min | Max | Unit | |-----------|--------|-----|-----|------| | Input Voltage | VIN | -0.3 | 60 | V | | Switch Pin Voltage | VSW | -1 | VIN + 0.3 | V | | Feedback Pin Voltage | VFB | -0.3 | 6 | V | | Enable Pin Voltage | VEN | -0.3 | 60 | V | | Maximum Junction Temperature | TJ | - | 150 | °C | | ESD Rating (HBM) | - | 2 | - | kV |

5. Functional Description

• Regulation architecture: Synchronous PWM uses an internal oscillator and error amplifier comparing scaled VOUT at FB to internal reference (0.6 V). PWM drives high-side MOSFET and synchronous low-side MOSFET to transfer energy through external inductor.
• Mode of operation: Continuous conduction mode (CCM) at moderate loads, with possible pulse-skipping or discontinuous conduction at light loads for improved efficiency.
• Start-up: On EN high and VIN present, the soft-start function ramps the internal reference to limit inrush and prevent output overshoot.
• Protections: Current limit protects against short circuits; thermal shutdown disables switching when die temperature exceeds threshold; VIN undervoltage lockout prevents operation until VIN above threshold.
• Power-good: PG asserts when VOUT reaches and stays within regulation threshold after soft-start.

7.1 Power Dissipation Calculation

For VIN=24V, VOUT=10V, IOUT=2A, Efficiency=90%:

• Input power = 20W → Dissipation = 2W.
• For TO-263 with θJA=40°C/W, Temp rise = 80°C above ambient.
• At 40°C ambient, TJ = 120°C (safe, below 150°C).

Heatsinking required if IOUT > 2.5A or VIN > 36V.

2. Key Electrical Parameters (Typical)

• Operating Voltage (Vcc): 3.3V or 5.0V (Check the V10 suffix for exact range).
• Current Consumption:
  • Operating: ~2mA – 20mA (depending on backlight).
  • Standby: <10µA.
• Interface: Parallel (6800/8080) or I2C/SPI.