The RT4531 is a dual-channel LED driver designed for backlight applications, featuring a boost converter with a switching frequency of 1MHz. It operates within an input voltage range of 2.5V to 5.5V and can drive up to 10 white LEDs in a 10s2p configuration. The device includes built-in protection features such as Under-Voltage Lockout (UVLO), Over-Current Protection (OCP), Output Over Voltage (OVP), and Over-Temperature Protection (OTP). It supports both PWM dimming and a 1-wire dimming interface, allowing for up to 10-bit brightness control. The RT4531 is packaged in a compact WL-CSP-9B format, measuring 1.35mm x 1.35mm. This product is suitable for applications in smartphones and small to medium-sized LCD displays powered by single-cell batteries.
LED Driver IC 2 Output DC DC Regulator Step-Up (Boost) PWM Dimming 20mA 9-WLCSP (1.35x1.35)
LED Driver IC 2 Output DC DC Regulator Step-Up (Boost) PWM Dimming 20mA 9-WLCSP (1.35x1.35)
LED Driver IC 2 Output DC DC Regulator Step-Up (Boost) PWM Dimming 20mA 9-WLCSP (1.35x1.35)
Win Source Part Number: 972844-RT4531WSC
Category: Integrated Circuits (ICs)>PMIC - LED Drivers
Type: DC DC Regulator
Package: Tape & Reel
Applications: Backlight
Standard Package: 3,000
Mounting: SMD (SMT)
Frequency: 1MHz
Current - Output / Channel: 20mA
Internal Switch(s): Yes
Topology: Step-Up (Boost)
Number of Outputs: 2
Dimming: PWM
Voltage - Supply (Min): 2.5V
Voltage - Supply (Max): 5.5V
Package / Case: 9-UFBGA, WLCSP
Supplier Device Package: 9-WLCSP (1.35x1.35)
Temperature Range - Operating: -40°C ~ 85°C (TA)
ECCN: EAR99
Fake Threat In the Open Market: 47 pct.
MSL Level: 3 (168 Hours)
REACH Status: REACH Unaffected
HTSUS: 8542.39.0001
Mfr: Richtek USA Inc.
Other Names: 1028-RT4531WSCCT,-RT
Base Product Number: RT4531
IC LED DRV RGLTR PWM 20MA 9WLCSP
IC 2CH 10S2P WLED DRVR 9WLCSP
IC 2CH 10S2P WLED DRVR 9WLCSP
LED DRIVER, BOOST, 1MHZ, WLCSP-9; Device Topology:Boost (Step Up); Input Voltage Min:2.5V; Input Voltage Max:5.5V; Output Voltage Max:-; Output Current Max:20mA; Switching Frequency:1MHz; No. of Outputs:2Outputs; IC Mounting:SMD; RoHS Compliant: Yes
| DigiKey | Win Source Electronics | Shenzhen Shengyu Electronics Technology Limited | Lingto Electronic Limited | Utmel Electronic Limited | Newark, An Avnet Company | |
|---|---|---|---|---|---|---|
| Product Category | LED Drivers | LED Drivers | LED Drivers | LED Drivers | LED Drivers | LED Drivers |
| Product Number | 1028-RT4531WSCDKR-ND | 972844-RT4531WSC | RT4531WSC | RT4531WSC | 682-RT4531WSC | 24AC5328 |
| Product Name | LED Drivers | Integrated Circuits (ICs) - PMIC - LED Drivers | Integrated Circuits (ICs) - Power Management (PMIC) - LED Drivers | PMIC - LED Drivers | IC 2CH 10S2P WLED DRVR 9WLCSP | Led Driver, Boost, 1Mhz, Wlcsp-9; Device Topology Richtek |
| Form Factor | Intgrated Circuit (IC) | Intgrated Circuit (IC) | Intgrated Circuit (IC) | Intgrated Circuit (IC) | ||
| Input Voltage | 2.5 to 5.5 volts | 2.5 to 5.5 volts | 2.5 to 5.5 volts | |||
| Output Current | 20 milliamps | 20 milliamps | 20 milliamps |
