LP6400 Overview
The LOWPOWER LP6400 is a high-voltage input synchronous buck regulator integrated with multi-protocol fast charge decoding capability. Adopting constant voltage control architecture, the LP6400 works stably with 8V to 32V input and outputs 5V with 3.6A continuous current, delivering excellent linear regulation and load regulation performance. Its constant-current control design brings fast transient response and simplifies loop stabilization for charging circuits.
The LOWPOWER LP6400 is optimized for compact designs by minimizing peripheral components. It is equipped with cable compensation, built-in current limiting and over-temperature shutdown to enhance operational safety. Packaged in standard SOP-8, the LP6400 supports a full lineup of mainstream fast charging standards, making it a cost-effective and high-performance core chip for USB fast charging equipment.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | LOWPOWER |
| Part Number | LP6400 |
| Input Voltage Range | 8V ~ 32V |
| Continuous Output Current (5V) | 3.6A |
| Switching Frequency | 180 KHz |
| Internal MOS RDS(ON) (High/Low) | 48mΩ / 22mΩ |
| Maximum Conversion Efficiency | 94% |
| Constant Voltage Accuracy | ±2% |
| FB Reference Voltage | 0.6V |
| Package Type | SOP-8 |
| Operating Ambient Temperature | -40℃ ~ 85℃ |
| Supported Fast Charge Protocols | QC2.0/3.0, FCP, AFC, Spreadtrum, Apple Mode |
Applications
The LOWPOWER LP6400 is widely adopted in vehicle car chargers and wall-mounted USB power adapters, and it can also serve as a pre-regulator for linear regulators and key components in distributed power supply systems. Besides, this synchronous buck regulator is ideal for common electronic device chargers, multi-port USB charging stations and embedded charging modules for smart consumer electronics.
Pin-to-Pin Compatible Alternatives
Pin-to-pin compatible components help manufacturers save PCB redesign costs and strengthen supply chain resilience, and the LOWPOWER LP6400 acts as a fully functional drop-in replacement for well-known Western synchronous buck fast charge regulators.
| Reference Part Number | Original Manufacturer | Why Choose LP6400 |
|---|---|---|
| TPS5430 | Texas Instruments | Lower procurement cost with full fast protocol compatibility |
| NCP1587 | onsemi | Lower MOS on-resistance for higher power efficiency |
| MAX16834 | Maxim Integrated | Fewer external components for simpler circuit layout |
| MCP1630 | Microchip | Built-in cable compensation for better load stability |
Frequently Asked Questions
Is LP6400 RoHS compliant?
Yes, the LOWPOWER LP6400 fully meets RoHS environmental compliance requirements. It is produced with green manufacturing processes and conforms to global electronic component environmental standards for worldwide sales and application.
What are the pin-to-pin replacements for LP6400?
The LP6400 is a pin-to-pin alternative to TI TPS5430, onsemi NCP1587, Maxim MAX16834 and Microchip MCP1630, with identical pin definitions and consistent electrical performance.
What is the minimum order quantity (MOQ) for LP6400?
ABL Semi offers flexible MOQ for LP6400, supporting both prototype quantities and mass production orders. Contact us for current stock and pricing.
What package options are available for LP6400?
The LP6400 is exclusively supplied in the standard SOP-8 package, a mainstream package that adapts to most conventional power supply PCB designs.
What protection functions does LP6400 integrate?
The LP6400 integrates comprehensive protection features including input under-voltage protection, output over-voltage protection, short-circuit protection, over-temperature shutdown and built-in current limiting to protect the chip and rear-end devices.
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