The ISL97678 is an 8-channel PWM dimming LED driver for LCD backlight applications. The ISL97678 is capable of driving up to 96 pieces of 3.4V/50mA LEDs but larger numbers of LEDs are possible if the LED forward voltage combined is less than 45V. The ISL97678 has 8 channels of voltage controlled current sources with typical currents matching to ±1%, which compensate for the non-uniformity effect of forward voltages variance in the LED strings. To minimize the voltage headroom and power loss in the typical multi-string operation, the ISL97678 features dynamic headroom control that monitors the highest LED forward voltage string and uses its feedback signal for output regulation.
The ISL97678 features PWM dimming up to 30kHz with 0.4%~100% duty cycle and maintains ±1% current matching across all ranges. The PWM dimming frequency can be adjusted between 100Hz and 30kHz. The boost switching frequency can also be adjusted between 600kHz and 1.5MHz.
The ISL97678 features extensive protection functions that include string open and short circuit detections, OVP, and OTP.
The ISL97678 is available in the 32 Ld QFN 5mmx5mm and operates from -40°C to +85°C with input voltage ranges from 4.75V to 26V.
LED Driver IC 8 Output DC DC Regulator Step-Up (Boost) PWM Dimming 50mA 32-QFN (5x5)
Manufacturer: Renesas Electronics America Inc.
Win Source Part Number: 802646-ISL97678IRZ-T
Packaging: Reel
Type: DC DC Regulator
Mounting Style: SMD
Applications: Backlight
Voltage - Output: 45V
Frequency: 500kHz ~ 1.5MHz
Current - Output / Channel: 50mA
Internal Switch(s): Yes
Topology: Step-Up (Boost)
Number of Outputs: 8
Dimming: PWM
Voltage - Supply (Min): 4.75V
Supplier Device Package: 32-QFN (5x5)
Temperature Range - Operating: -40°C ~ 85°C
Manufacturer Package: 32-VFQFN Exposed Pad
Popularity: High
Fake Threat In the Open Market: 57 pct.
Supply and Demand Status: Balance
Manufacturer Pack Quantity: 1,000
MSL Level: 3 (168 Hours)
Voltage - Supply (Maximum): 26V
Part Number Series: ISL97678
IC LED DRVR RGLTR PWM 50MA 32QFN Product overview: ISL97678IRZ-TK from Renesas Electronics Corporation is a LED Driver IC for LED lighting, display backlights, indicator control, automotive lighting, signage, and regulated current drive circuits. It is useful for engineers and buyers comparing datasheets, replacement parts, BOM lines, package options, lifecycle status, and procurement availability. Key searchable attributes include 50MA. Search-friendly keywords include LED driver IC, constant current, lighting control, display backlight, 50MA, External/Internal LED Drivers. This listing supports clearer product discovery for industrial, commercial, repair, automation, power, sensing, and embedded system projects. Product number 137-ISL97678IRZ-TK can be used for catalog matching and distributor lookup.
IC LED DRVR RGLTR DIM 50MA 32QFN
IC LED DRVR RGLTR PWM 50MA 32QFN
| Renesas Electronics Corporation | DigiKey | Win Source Electronics | ERSAELECTRONICS PTE. LTD. | Lingto Electronic Limited | Shenzhen Shengyu Electronics Technology Limited | |
|---|---|---|---|---|---|---|
| Product Category | LED Drivers | LED Drivers | LED Drivers | LED Drivers | LED Drivers | LED Drivers |
| Product Number | ISL97678IRZ-TK | ISL97678IRZ-TK-ND | 802646-ISL97678IRZ-TK | 137-ISL97678IRZ-TK | ISL97678IRZ-TK | ISL97678IRZ-TK |
| Product Name | 8-Channel 45V 50mA LED Driver | LED Drivers | PMIC - PMIC - LED Drivers - ISL97678IRZ-TK | 50MA LED Driver IC | PMIC - LED Drivers | Integrated Circuits (ICs) - Power Management (PMIC) - LED Drivers |
| Form Factor | Intgrated Circuit (IC) | Intgrated Circuit (IC) | Intgrated Circuit (IC) | |||
| Input Voltage | 4.75 to 26 volts | 4.75 to 26 volts | 4.75 to 26 volts | 4.75 to 26 volts | ||
| Output Voltage | 45 volts | 45 volts | 45 volts | |||
| Output Current | 50 milliamps | 50 milliamps | 50 milliamps | |||
| Efficiency | 93.4 % |
