Richtek RT-Series SOP-8 Power Management ICs — Buck, Boost, LDO & Load Switch

A selection of Richtek (RT) SOP-8 power management ICs covering buck converters, boost converters, LDO regulators, and load switches. Each listing is a 2-pack of the same IC — choose the specific part number from the variant selector. All are new, original Richtek parts in SOP-8 SMD package.

IC Variants & Key Functions

Part Number	Function	Key Specs
RT9711A	Load Switch / Power Distribution Switch	2.5–5.5V, 2A, OVP, OCP
RT8105	Synchronous Buck Converter	4.5–18V in, Adj. out, 2A
RT8293AH	Boost Converter	2.5–5.5V in, up to 28V out, 1.2A
RT9214	PWM Controller (Synchronous Buck)	Multi-phase capable, notebook PSU
RT7257	Synchronous Buck Converter	4.5–18V in, 0.6–5V out, 3A
RT8284	Synchronous Buck Converter	4.5–18V in, Adj. out, 2A, 1.5MHz
RT8108	Synchronous Buck Converter	4.5–18V in, Adj. out, 3A
RT9108	LDO Voltage Regulator	Up to 6V in, Adj. out, 300mA
RT8289	Synchronous Buck Converter	4.5–18V in, Adj. out, 2A
RT8120A	Synchronous Buck Converter	4.5–18V in, Adj. out, 3A, 340kHz

Why Choose Richtek RT-Series?

High integration — internal MOSFETs eliminate external switching transistors
SOP-8 package — compact SMD footprint for space-efficient PCB designs
High efficiency — synchronous rectification for >90% efficiency in buck converters
Wide input range — most variants accept 4.5–18V for 5V, 9V, 12V systems
2-pack value — one for prototyping, one as spare
New & original — genuine Richtek parts, not remarked or counterfeit

Typical Applications

Notebook / laptop power supply — RT9214 multi-phase PWM controller for CPU core voltage
USB power delivery — RT9711A load switch for USB port power management
LED backlight boost — RT8293AH boost converter for LCD panel backlight
Point-of-load regulation — RT8105/RT8284/RT8108 for board-level voltage regulation
IoT device power — compact buck converters for ESP32, STM32, and sensor nodes

FAQ

Q: How do I identify which RT IC I need?
A: Check the marking on your existing IC or refer to the schematic. The part number is printed on the SOP-8 package. Select the matching variant from the dropdown.

Q: Are these compatible with standard SOP-8 PCB footprints?
A: Yes. All variants use the standard SOP-8 (1.27mm pitch, 3.9mm body width) footprint.

Q: Do I need external inductors and capacitors?
A: Yes. Buck and boost converters require external inductors, input/output capacitors, and feedback resistors. Refer to the Richtek datasheet for the specific part number for recommended component values.