The RT2856GQW 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 RT2856GQW current-mode architecture with externalcompensation 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 under-voltage protection, output over-voltage protection,and overtemperature protection. The low current shutdown mode provides output disconnection, enabling easy power management in battery-powered systems.
Product Feature
Low RDS (ON) Power MOSFET Switches 26mΩ/19mΩ
Accurate Voltage Reference 0.8V±1%, Over -40°C to 85°C
Monotonic Start-Up into Pre-biased Outputs
Adjustable Soft-Start
Power Good Indicator
Under-Voltage and Over-Voltage Protection
Input Under-Voltage Lockout
Manufacturer | Richtek USA Inc. |
---|---|
Category | AC/DC and DC/DC Conversion |
Sub-Category | DC/DC SMPS - Single Output |
Eval Board Part Number | EVB_RT2856GQW-ND |
Eval Board Supplier | Richtek USA Inc. |
Eval Board |
Board not Stocked
|
Topology |
Step Down
|
Outputs and Type |
1 Non-Isolated
|
Voltage Out: Factory Set |
3.3 V
|
Current Out |
6 A
|
Voltage In |
4.5 ~ 18 V
|
Efficiency @ Conditions |
>95%, 9V in, 3.3V @ 1 ~ 4 A
>95%, 12V in, 5V @ 1 ~ 6 A >90%, 17V in, 3.3V @ 1 ~ 6 A >90%, 12V in, 3.3V @ 0.5 ~ 6 A |
Voltage Out Range |
0.8 ~ 16.2 V
|
Features |
Current Limit (Adj. or Fixed)
Over Voltage Protection Power Good Output Soft Start Synchronizable Under Voltage Protection, Brown-Out |
Switching Frequency |
200 kHz ~ 1.6 MHz
|
Standby Current [Typical] |
3 µA
|
Quiescent Current [Typical] |
600 µA
|
Component Count + Extras |
19 + 24
|
Internal Switch |
Yes
|
Design Author |
Richtek USA Inc.
|
Application / Target Market |
Point of Load (PoL)
Power: Industrial Power |
Standby Current [Maximum] |
9 µA
|
Quiescent Current [Maximum] |
1 mA
|
Main I.C. Base Part |
RT2856
|
Date Created By Author | 2016-03 |
Date Added To Library | 2021-04 |