The RTQ2077S is a highly-integrated, low-power high performance PMIC (Power Management IC) for Industrial/ Automotive applications. The device includes one 400mA high voltage synchronous step-down DC-DC converter and one 200mA low dropout LDO. All MOSFETs are integrated, and compensation networks are built-in.

The RTQ2077S is an Automotive-Grade Product that is AEC-Q100 Grade 1 Qualified and provides fault condition protections, including over-current protection, under-voltage lockout, over-voltage protection and over-temperature protection. The RTQ2077S is available in WQFN-16L 3x3 package.


  • Automotive Systems
  • Car Camera Module and Car Cockpit Systems
  • Connected Car Systems
  • Point of Load Regulator in Distributed Power Systems
  • Digital Set Top Boxes
  • Broadband Communications
Key Spec.
Status Active
Vin (min) (V) 4.5
Vin (max) (V) 15
Number of Channels 2
Number of Buck Converters 1
Number of Boost Converters 0
Number of Negative Outputs 0
Number of LED Drivers 0
Number of LDO Regulators 1
Application Automotive
Features AEC-Q100;Current Mode Control;Cycle-by-Cycle Current Limit;Diode Emulation Mode;Enable Input;High PSRR;Internal Compensation;OCP;OVP;Power Good;SCP;Stable with Ceramic Capacitor;UVP
Package Type WQFN3x3-16
  • AEC-Q100 Grade 1 Qualified
  • -40°C to 125°C Operating Ambient Temperature Range
  • 2.7V to 5.5V Input Voltage Range for LDO
  • 4.5V to 15V Input Voltage Range for HV-Step-Down Regulator
  • 2MHz Switching Frequency
  • Adjustable Output Voltage from 2.7V to 5V for HV-Step-Down Regulator
  • Adjustable Output Voltage from 1V to 3.6V for LDO
  • Peak Current Mode Control
  • Integrated 330mΩ /150mΩ MOSFETs
  • Enable Control
  • Power Good Indicator
  • Cycle-by-Cycle Over-Current Limit Protection
  • Input Under-Voltage Lockout
  • Output Under-Voltage Protection
  • Over-Temperature Protection
TitleLast UpdateDownload
DC-DC Converters + LDO PMIC for Industrial/Automotive Application2018/07/03
Technical Documents
TitleItem TypeLast UpdateDownload
Richtek Product Selection Guide [Jan., 2024] Selection Guide2024/01/18
Richtek Automotive Product Selection Guide [Sep., 2022] Selection Guide2022/09/01
Part NumberPackage TypePackage Qty.Free SampleBuy From Authorized Distributor
RTQ2077SGQW-QTWQFN3x3-161500 Request Buy from Distributor