The ISL78171 is a 6-channel, 50mA, LED driver capable of very high dynamic range dimming. It offers an integrated boost converter, six high precision, adjustable current sinks and a SMBus/I2C interface for digital programmability and extensive diagnostics. These features provide the ISL78171 with the capabilities to design a compact, highly versatile LED backlight for a wide variety of ambient lighting conditions.
The integrated peak current mode PWM boost converter operates with a constant frequency and can boost an input voltage range of 4.5V - 26.5V to an output up to 40V and supply six strings of LEDs with up to 50mA each. A dynamic headroom control circuit detects and regulates the highest voltage string to improve efficiency in multistring configurations.
The six high precision adjustable current sinks offer typical current matching better than ±1% and a dimming ratio capable of exceeding 60,000:1. The dimming ratio can be adjusted with either or both the I2C/SMBus and an external PWM signal. They also feature an optional channel phase shift control which helps to reduce the input and output capacitance and ripple, to improve efficiency and to prevent audible noise.
The SMBus/I2C interface offers a wide range of programmability that includes the boost FET slew rate control, individual string enabling, and converter switching frequency selections. It offers a wide range of protection features and diagnostics that cover all perceivable faults, enabling the system to self-diagnose the functioning of the backlight and react to such conditions as failed LEDs. The ISL78171 is offered in a compact and thermally efficient 20 Ld QFN package with an ambient temperature range of -40°C to +105°C.
LED Driver IC 6 Output DC DC Regulator Step-Up (Boost) Analog, I²C, PWM Dimming 50mA 20-QFN (3x4)
LED Driver IC 6 Output DC DC Regulator Step-Up (Boost) Analog, I²C, PWM Dimming 50mA 20-QFN (3x4)
LED Driver IC 6 Output DC DC Regulator Step-Up (Boost) Analog, I²C, PWM Dimming 50mA 20-QFN (3x4)
ISL78171ARZ Automotive 6-Ch LED Driver w
ISL78171ARZ Automotive 6-Ch LED Driver w
ISL78171ARZ Automotive 6-Ch LED Driver w
IC LED DRVR RGLTR PWM 50MA 20QFN Product overview: ISL78171ARZ-T7A 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-ISL78171ARZ-T7A can be used for catalog matching and distributor lookup.
Win Source Part Number: 1007661-ISL78171ARZ-
Category: Integrated Circuits (ICs)>PMIC - LED Drivers
Series: Automotive, AEC-Q100
Type: DC DC Regulator
Package: Tape & Reel
Applications: Automotive, Backlight
Standard Package: 250
Mounting: SMD (SMT)
Voltage - Output: 40V
Frequency: 600kHz, 1.2MHz
Current - Output / Channel: 50mA
Internal Switch(s): Yes
Topology: Step-Up (Boost)
Number of Outputs: 6
Dimming: Analog, I2C, PWM
Voltage - Supply (Min): 4.5V
Voltage - Supply (Max): 26.5V
Package / Case: 20-VFQFN Exposed Pad
Supplier Device Package: 20-QFN (3x4)
Temperature Range - Operating: -40°C ~ 105°C (TA)
ECCN: EAR99
Fake Threat In the Open Market: 67 pct.
MSL Level: 1 (Unlimited)
REACH Status: REACH Unaffected
HTSUS: 8542.39.0001
Mfr: Renesas Electronics America Inc
Other Names: ISL78171ARZ-T7ATR,IS
Base Product Number: ISL78171
IC LED DRIVER RGLTR DIM 20QFN
IC LED DRVR RGLTR PWM 50MA 20QFN
LED DRIVER, BOOST, 6-CH, 50MA, QFN-20; Device Topology:Boost (Step Up); Input Voltage Min:4.5V; Input Voltage Max:26.5V; Output Voltage Max:40V; Output Current Max:50mA; Switching Frequency:1.2MHz; No. of Outputs:6Outputs; IC RoHS Compliant: Yes
ISL78171ARZ Automotive 6-Ch LED Driver with PWM Dimming. T&R / Tape & Reel RoHS Compliant: Yes
| Renesas Electronics Corporation | DigiKey | RS Components, Ltd. | ERSAELECTRONICS PTE. LTD. | Win Source Electronics | Lingto Electronic Limited | Shenzhen Shengyu Electronics Technology Limited | Newark, An Avnet Company | Newark, An Avnet Company | |
|---|---|---|---|---|---|---|---|---|---|
| Product Category | LED Drivers | LED Drivers | LED Drivers | LED Drivers | LED Drivers | LED Drivers | LED Drivers | LED Drivers | LED Drivers |
| Product Number | ISL78171ARZ-T7A | ISL78171ARZ-T7ADKR-ND | 2638967 | 137-ISL78171ARZ-T7A | 1007661-ISL78171ARZ-T7A | ISL78171ARZ-T7A | ISL78171ARZ-T7A | 82Y6724 | 55Y0578 |
| Product Name | 6-Channel, 50mA Automotive LED Driver with Ultra-high Dimming Ratio and Phase Shift Control | LED Drivers | LED Drivers | 50MA LED Driver IC | Integrated Circuits (ICs) - PMIC - LED Drivers | PMIC - LED Drivers | Integrated Circuits (ICs) - Power Management (PMIC) - LED Drivers | Led Driver, Boost, 6-Ch, 50Ma, Qfn-20; Device Topology Renesas | Isl78171Arz Automotive 6-Ch Led Driver With Pwm Dimming. T&r / Tape & Reel Rohs Compliant Renesas |
| Form Factor | Intgrated Circuit (IC) | Intgrated Circuit (IC) | Intgrated Circuit (IC) | Intgrated Circuit (IC) | Intgrated Circuit (IC) | ||||
| Input Voltage | 4.5 to 26.5 volts | 4.5 to 26.5 volts | 4.5 to 26.5 volts | 4.5 to 26.5 volts | 4.5 to 26.5 volts | ||||
| Output Voltage | 40 volts | 40 volts | 40 volts | 40 volts | 40 volts | ||||
| Output Current | 50 milliamps | 50 milliamps | 50 milliamps | 50 milliamps | |||||
| Efficiency | 92.9 % |
