PWM Step-Up DC/DC Controller for White-LED Driver


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The RT9288A is a wide input operating voltage range step-up controller. High voltage output and large output current are feasible by using an external N-MOSFET. The RT9288A input operating range is from 3V to 13.5V. Besides, it could support up to 60V output at 12V input.
The RT9288A is an optimized design for WLED driver applications. Adjusting the output current of the RT9288A changes the brightness of the WLEDs. Chip Enable pin can be used as a digital input allowing WLED brightness control with a logic-level PWM signal.


  • TFT LCD Panels
  • LED Backlighting
Key Spec.
Status Active
Vin (min) (V) 3
Vin (max) (V) 13.5
Iq (typ) (mA) 2
VFB (typ) (V) 0.5
Freq (typ) (kHz) 1000
Duty (max) (%) 90
Features Enable Input;SCP
Package Type SOT-26
  • VIN Operating Range : 3V to 13.5V
  • Fixed PWM Frequency : 1MHz
  • 200Hz to 200kHz PWM Dimming Frequency
  • Flexible PWM/Analog Dimming Control
  • Voltage Mode with External Compensation
  • Soft Start Function
  • RoHS Compliant and 100% Lead (Pb)-Free
TitleLast UpdateShareDownload
PWM Step-Up DC/DC Controller for White-LED Driver2007/08/31
Title Last Update ShareDownload
PWM Step-Up DC/DC Controller for White-LED Driver 2015/05/19
Technical Documents
TitleLast UpdateShareDownload
Richtek Selection Guide [Oct., 2020]2020/12/30
Part NumberPackage TypePackage Qty.Free SampleBuy From Authorized Distributor
RT9288AGESOT-263000 Not available Buy from Distributor