loading
About Richtek | Contact Us |

The RT8258 is a high voltage buck converter that can support the input voltage range from 4.5V to 24V and the output current can be up to 1.2A. Current Mode operation provides fast transient response and eases loop stabilization.
The chip also provides protection functions such as cycle-by-cycle current limiting and thermal shutdown protection. The RT8258 is available in a SOT-23-6 and TSOT-23-6 packages.

Applications

  • Distributed Power Systems
  • Battery Charger
  • Pre-Regulator for Linear Regulators
  • WLED Drivers
Key Spec.
RT8258
Status Active
Vin (min) (V) 4.5
Vin (max) (V) 24
Number of Outputs 1
Vout (min) (V) 0.8
Vout (max) (V) 15
Output Adj. Method Resistor
Iout (max) (A) 1.2
Current Limit (typ) (A) 2.1
Freq (typ) (kHz) 700
Ext Sync No
Ron_HS (typ) (mOhm) 300
Iq (typ) (mA) 0.55
Features Built-in Bootstrap Switch;Current Mode Control;Cycle-by-Cycle Current Limit;Enable Input;Force PWM;Internal Compensation;OCP;Stable with Ceramic Capacitor
Package Type SOT-26;TSOT-26
Features
  • Wide Operating Input Voltage Range : 4.5V to 24V
  • Adjustable Output Voltage Range : 0.8V to 15V
  • 1.2A Output Current
  • 0.3Ω Internal Power MOSFET Switch
  • High Efficiency up to 92%
  • 700kHz Fixed Switching Frequency
  • Stable with Low ESR Output Ceramic Capacitors
  • Thermal Shutdown
  • Cycle-By-Cycle Over Current Protection
  • RoHS Compliant and Halogen Free
Datasheet
TitleLast UpdateDownload
1.2A, 24V, 700kHz Step-Down Converter2009/04/27
Technical Documents
TitleItem TypeLast UpdateDownload
Richtek Product Selection Guide [Jan., 2024] Selection Guide2024/01/18
Richtek Featured Product Tree [Aug., 2023] Selection Guide2023/08/07
Reference Design
TitleLast UpdateDownload
Richtek Load Transient Tool2022/07/25
Part NumberPackage TypePackage Qty.Free SampleBuy From Authorized Distributor
RT8258GESOT-263000 Request Buy from Distributor
RT8258GJ6TSOT-263000 Request Buy from Distributor
Please confirm with our distributor or sales representative for actual stock status.
TOP