SM5401 Synchronous step-up conversion charging SOP-8

SM5401 Synchronous Step-Up Conversion Charging IC (SOP-8) delivers high-efficiency boost charging in a compact SOP-8 package. It steps up low-voltage inputs to higher battery charging levels with accuracy and energy-saving performance, making it ideal for portable devices and battery-powered systems.

Key Features:

• Synchronous Step-Up Converter: Drives boost charging with high efficiency and minimal power loss.
• Wide Input Range: Accepts input voltage as low as 2.5 V and boosts up to 17 V.
• Integrated MOSFETs: Delivers synchronous switching without external components.
• Current Regulation: Supports constant-current charging up to 2 A.
• Operating Frequency: 1.2 MHz switching frequency enables compact external component design.

Technical Specifications:

• Input Voltage: 2.5 V to 5.5 V.
• Output Voltage Range: Up to 17 V (typical charging target).
• Max Output Current: 2 A constant current.
• Switching Frequency: 1.2 MHz (typical).
• Efficiency: Up to 95% in optimal conditions.
• Shutdown Mode: Draws minimal current for battery preservation.

Mechanical Specifications:

• Package Type: SOP-8 surface-mount package.
• Body Material: Molded epoxy with high thermal endurance.
• Pin Finish: Tin-plated leads for solder reliability.

Dimensions:

• Body Length: ~5.0 mm
• Body Width: ~6.2 mm
• Body Height: ~1.4 mm
• Pin Pitch: 1.27 mm (standard SOP-8 spacing)

Pinout and Wiring:

• Pin 1 (GND): Connects to system ground.
• Pin 2 (SW): Switch node output drives the inductor.
• Pin 3 (BST): Bootstrap supply for gate drive.
• Pin 4 (VIN): Connects to input voltage source.
• Pin 5 (EN): Enables or disables the IC output (active high).
• Pin 6 (VOUT): Delivers boosted output voltage.
• Pin 7 (ISET): Sets the charging current via external resistor.
• Pin 8 (FB): Feedback pin for precise voltage regulation.

Datasheet Reference:

• Refer to “SM5401 Step-Up Converters Datasheet” for electrical details and application schematics.

Applications:

• Portable Electronics: Powers and recharges gadgets from low-voltage sources.
• Battery Chargers: Implements efficient single-cell Li-ion charging.
• Power Banks: Enables step-up charging for fast energy replenishment.
• Wearable Devices: Maintains compact, efficient charging circuits.

Equivalent Models:

• TP4056 + Boost Converter Combo: Combines charger and step-up stage externally.
• MT3608 Boost IC: Offers similar boost capability but lacks integrated charge control.
• XL6008 Step-Up Regulator: Delivers higher current but requires external FETs.

Package Includes:

• 1 x SM5401 Synchronous Step-Up Conversion Charging IC (SOP-8)