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The RT7296A is a high-efficiency, 3A current mode synchronous step-down DC-DC converter with a wide input voltage range from 4.5V to 17V. The device integrates 80mΩ high-side and 30mΩ low-side MOSFETs to achieve high efficiency conversion. The current mode control architecture supports fast transient response and internal compensation. The RT7296A provides TTH pin to adjust transition point from PSM to PWM in order to balance efficiency and output ripple. A cycle-by-cycle current limit function provides protection against shorted output. The RT7296A 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 RT7296A 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.
RT7296A
Status Active
Vin (min) (V) 4.5
Vin (max) (V) 17
Number of Outputs 1
Vout (min) (V) 0.807
Vout (max) (V) 5
Output Adj. Method Resistor
Iout (max) (A) 3
Current Limit (typ) (A) 5
Freq (typ) (kHz) 500
Freq (min) (kHz) 200
Freq (max) (kHz) 2000
Ext Sync Yes
Ron_HS (typ) (mOhm) 80
Ron_LS (typ) (mOhm) 30
Iq (typ) (mA) 0.8
Features Built-in Bootstrap Switch;Current Mode Control;Cycle-by-Cycle Current Limit;Enable Input;External Synchronization;Internal Compensation;OCP;OTP;Selectable (PSM or PWM);Stable with Ceramic Capacitor;UVP
Package Type TSOT-28(FC)
Features
  • 4.5V to 17V Input Voltage Range
  • 3A 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
  • TTH For Adjustable PSM to PWM Transition Threshold
  • Internal Soft-Start Function
  • Input Under-Voltage Lockout
  • Output Under-Voltage Protection
  • Thermal Shutdown
  • RoHS Compliant and Halogen Free
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 SampleDistributorStockBuy From Authorized Distributor
RT7296AGJ8FTSOT-28(FC)3,000 Request Digikey 700 Buy
Mouser 3,000 Buy
Evaluation Board
Part NumberDistributorStockBuy From Authorized Distributor
EVB_RT7296AGJ8F Digikey 3 Buy
Mouser 5 Buy
Please confirm with our distributor or sales representative for actual stock status.
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