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The RT7259 is a synchronous step-down DC/DC converter with an integrated high side internal power MOSFET and a gate driver for a low side external power MOSFET. It can deliver up to 10A output current from a 4.5V to 24V input supply. The RT7259's current mode architecture allows the transient response to be optimized over a wider input voltage and load range. Cycle-by-cycle current limit provides protection against shorted outputs and soft-start eliminates input current surge during start-up. The RT7259 is synchronizable to an external clock with frequency ranging from 300kHz to 1.5MHz.
The RT7259 is available in WDFN-14L 4x3 package.

Applications

  • Point of Load Regulator in Distributed Power System
  • Digital Set top Boxes
  • Personal Digital Recorders
  • Broadband Communications
  • Flat Panel TVs and Monitors
Key Spec.
RT7259
Status Active
Vin (min) (V) 4.5
Vin (max) (V) 24
Number of Outputs 1
Vout (min) (V) 0.808
Vout (max) (V) 15
Output Adj. Method Resistor
Iout (max) (A) 10
Current Limit (typ) (A) 16
Freq (typ) (kHz) 600
Freq (min) (kHz) 300
Freq (max) (kHz) 1500
Ext Sync Yes
Ron_HS (typ) (mOhm) 45
Iq (typ) (mA) 0.9
Features Built-in Bootstrap Switch;Current Mode Control;Cycle-by-Cycle Current Limit;Enable Input;External Synchronization;Force PWM;Internal Compensation;OCP;OTP;Power Good;Stable with Ceramic Capacitor;UVP
Package Type WDFN4x3-14
Features
  • 4.5V to 24V Input Voltage Range
  • 10A Output Current
  • 45mΩ Internal High Side N-MOSFET
  • Current Mode Control
  • 600kHz Switching Frequency
  • Adjustable Output from 0.808V to 15V
  • Up to 95% Efficiency
  • Internal Compensation
  • Stable with Ceramic Capacitors
  • Synchronous External Clock : 300kHz to 1.5MHz
  • Cycle-by-Cycle Current Limit
  • Input Under Voltage Lockout
  • Output Under Voltage Protection
  • Power Good Indicator
  • Thermal Shutdown Protection
  • RoHS Compliant and Halogen Free
Reference Design
TitleLast UpdateDownload
Richtek Load Transient Tool2022/07/25
Please confirm with our distributor or sales representative for actual stock status.
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