HT7530-1 3V 100mA Low Dropout Voltage Regulator SOT-89

HT7530-1 3V 100mA Low Dropout Voltage Regulator SOT-89 is a high-precision three-terminal regulator that utilizes CMOS technology to deliver a stable 3V output with remarkably low power consumption. This device effectively handles input voltages up to 24V, making it an excellent choice for systems powered by multi-cell batteries or industrial rails. Furthermore, its low dropout (LDO) characteristics ensure that the regulator maintains a steady output even when the input voltage sits just slightly above the target 3V level. Consequently, engineers often select the HT7530-1 for battery-powered applications where maximizing runtime and minimizing heat dissipation are critical requirements. Therefore, you should consider this regulator for any compact electronic design that demands a high-voltage input capability paired with an ultra-low quiescent current.

Key Features:

• Ultra-Low Quiescent Current: The device draws a typical current of only 2.5 μA, which significantly extends the battery life of portable electronics.
• High Input Voltage Range: It safely accepts input voltages as high as 24V, providing versatility across various power source configurations.
• Low Dropout Voltage: Features a low dropout of approximately 100mV at low loads, ensuring efficient operation as battery voltage declines.
• High Output Accuracy: Delivers a precise 3V output with a tolerance of ±3%, maintaining system stability for sensitive digital components.
• SOT-89 Package: The small surface-mount footprint offers a perfect balance between space-saving design and adequate thermal performance.

Technical Specifications:

• Output Voltage: 3.0 V (Fixed)
• Maximum Input Voltage: 24 V
• Maximum Output Current: 100 mA
• Quiescent Current (I_Q): ≈ 2.5 μA (Typical)
• Output Voltage Accuracy: ±3%
• Dropout Voltage (V_drop): ≈ 100 mV (at low current)
• Temperature Coefficient: ±100 ppm/°C

Mechanical Specifications:

• Package Type: SOT-89-3 (Surface Mount Device)
• Case Material: Molded Plastic
• Lead Finish: Matte Tin / Lead-Free
• Flammability Rating: UL 94 V-0

Dimensions:

• Body Length: ≈ 4.5 mm
• Body Width: ≈ 2.5 mm
• Total Width (including leads): ≈ 4.1 mm
• Height: ≈ 1.5 mm
• Lead Pitch: 1.5 mm

Pinout and Wiring:

• Pin 1 (GND): Connect this pin to the common circuit ground.
• Pin 2 (VIN): Connect the unregulated input voltage source (up to 24V) to this pin.
• Pin 3 (VOUT): This pin provides the regulated 3V output.
• Wiring Note: However, you must place a 10 μF capacitor on both the input and output pins to ensure circuit stability and minimize voltage ripples.

Datasheet Reference:

• Download HT7530-1 LDO Datasheet

Commonly Used in:

• Battery-Powered Devices: Essential for maintaining stable logic levels in devices using Li-ion, alkaline, or lead-acid batteries.
• Wireless Modules: Powering ESP8266, NRF24L01, and other low-power RF sensors requiring a clean 3V supply.
• Industrial Sensors: Regulating high-voltage sensor bus signals down to microcontroller-compatible levels.

Applications:

• Remote Monitoring: Provides long-term power regulation for environmental sensors placed in the field.
• Consumer Electronics: High-efficiency regulation for calculators, handheld toys, and clocks.
• Smart Meters: Ensures the microcontroller remains powered during slight fluctuations in the primary supply line.

Equivalent Models:

• MCP1700-3002: A popular alternative with similar low quiescent current, though it supports a lower maximum input voltage.
• AP7333-30: Another 300mA LDO that can serve as a replacement in low-voltage input scenarios.
• XC6206P302MR: A CMOS LDO with a similar 3V output and SOT-23 package, however, verify the pinout and voltage limits before swapping.

Package Includes:

• 1 x HT7530-1 3V 100mA Low Dropout Voltage Regulator SOT-89