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2A, 17V Current Mode Synchronous Step-Down Converter

RT6296B

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The RT6296B is a high-efficiency, 2A current mode synchronous step-down DC-DC converter with a wide input voltage range from 4.5V to 17V. The device integrates 100mΩ high-side and 40mΩ low-side MOSFETs to achieve high efficiency conversion. The current mode control architecture supports fast transient response and internal compensation. A cycle-by-cycle current limit function provides protection against shorted output. The RT6296B provides complete protection functions such as input under-voltage lockout, output under-voltage protection, over-current protection, and thermal shutdown. The PWM frequency is adjustable by the EN/SYNC pin. The RT6296B is available in the TSOT-23-8 (FC) package.

Applications

  • Industrial and Commercial Low Power Systems
  • Computer Peripherals
  • LCD Monitors and TVs
  • Set-top Boxes
Key Spec.
RT6296B
Status Active
Vin (min) (V) 4.5
Vin (max) (V) 17
Number of Outputs 1
Vout (min) (V) 0.807
Vout (max) (V) 15.0
Output Adj. Method Resistor
Iout (max) (A) 2
Current Limit (typ) (A) 4
Freq (typ) (kHz) 500
Freq (min) (kHz) 200
Freq (max) (kHz) 2000
Ext Sync Yes
Ron_HS (typ) (mOhm) 100
Ron_LS (typ) (mOhm) 40
Iq (typ) (mA) 0.8
Features Adjustable Soft-Start;Current Mode Control;Cycle-by-Cycle Current Limit;Enable Input;External Synchronization;Force PWM;Internal Compensation;OCP;OTP;Stable with Ceramic Capacitor;UVP
Package Type TSOT-28(FC)
Features
  • 4.5V to 17V Input Voltage Range
  • 2A Output Current
  • Internal N-Channel MOSFETs
  • Current Mode Control
  • Fixed Switching Frequency : 500kHz
  • Synchronous to External Clock : 200kHz to 2MHz
  • Cycle-by-Cycle Current Limit
  • External Soft-Start Function
  • Input Under-Voltage Lockout
  • Output Under-Voltage Protection
  • Thermal Shutdown
Datasheet
TitleLast UpdateShareDownload
2A, 17V Current Mode Synchronous Step-Down Converter2015/03/17
Technical Documents
TitleLast UpdateShareDownload
Richtek Selection Guide [Oct., 2020]2020/12/30
Videos
TitleLast UpdateShareViews
How to estimate control loop bandwidth from the transient response time?2017/03/30 1354
Reference Design
TitleLast UpdateShareDownload
Richtek Load Transient Tool2021/01/21
Part NumberPackage TypePackage Qty.Free SampleBuy From Authorized Distributor
RT6296BGJ8FTSOT-28(FC)3000 Request Buy from Distributor
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