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RICHTEK RT2857BHGQW product image
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RICHTEK RT2857BHGQWRoHS

Manufacturer
RICHTEKAsian Brands
MPN
RT2857BHGQW
LCSC Part #
C6461025
Packaging
WQFN-14AL(3.5x3.5)
Customer #
Key Attributes
6A, 18V Synchronous Step-Down Converter
Datasheetpdf iconRICHTEK RT2857BHGQW
In-Stock: 3,201
3,201 In stock, ships now
Add to BOM List
QtyUnit PriceTotal Amount
1+$ 0.9088$ 0.91
10+$ 0.8145$ 8.15
30+$ 0.7625$ 22.88
100+$ 0.7039$ 70.39
500+$ 0.6779$ 338.95
1,500+$ 0.6666$ 999.90
Standard Packaging1500/Full Reel
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Products Specifications

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TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - DC DC Switching Regulators
ManufacturerRICHTEK
PackagingWQFN-14AL(3.5x3.5)
Operating Temperature-40℃~+150℃@(TJ)
FunctionStep-down type
Frequency - Switching200kHz~1.6MHz
Number of Outputs1
FeaturesCycle-by-cycle current limiting;Adjustable soft-start;Operating status indication;Overcurrent Protection;Hiccup current limiting;External compensation;Frequency synchronization
Output TypeAdjustable
TopologyBuck
Operating Voltage4.5V~18V
Switch tube (built-in/external)Built-in
Output Voltage-
Output Current6A
Quiescent Current600uA
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Additional Information

TypeDetails
Minimum1
Multiple1
Standard Packaging1500
Sales UnitPiece

Introduction

AI Translation

The RT2857B is a high efficiency, monolithic synchronous step-down DC-DC converter that can deliver up to 6A output current from a 4.5V to 18V input supply. The RT2857B current-mode architecture with external compensation allows the transient response to be optimized over a wide range of loads and output capacitors. Cycle-by-cycle current limit provides protection against shorted outputs and soft-start eliminates input current surge during startup. Fault condition protections include output over-current protection, output over-voltage protection, and overtemperature protection. The low current shutdown mode provides output disconnection, enabling easy power management in battery-powered systems.

Features

AI Translation
  • Low RDS(ON) Power MOSFET Switches 26mΩ/19mΩ
  • Input Voltage Range: 4.5V to 18V
  • Adjustable Switching Frequency: 200kHz to 1.6MHz
  • Current-Mode Control
  • Synchronous to External Clock: 200kHz to 1.6MHz
  • Accurate Voltage Reference: 0.6V±1%, Over -40°C to 85°C; 0.6V±1.5%, Over -40°C to 150°C
  • Monotonic Start-Up into Pre-biased Outputs
  • Adjustable Soft-Start
  • Power Good Indicator
  • Over-Current Protection
  • Over-Temperature and Over-Voltage Protection
  • Input Under-Voltage Lockout
  • RoHS Compliant and Halogen Free

Applications

AI Translation
  • High Performance Point of Load Regulation
  • Notebook Computers
  • High Density and Distributed Power Systems