The ISL97901 is a highly efficient four channel, 1.5A sequential LED driver powered from a single-cell Li-ion battery, or regulated input voltage up to 5.5V. The ISL97901 incorporates an independent current controlled driving mechanism for each of the LED's to allow accurate brightness control.
The ISL97901 also utilizes a buck-boost converter to ensure optimum output voltage is maintained for a wide variety of LED forward voltages. The ISL97901's highly integrated and efficient power conversion core operates at well over 90% efficiency across a wide range of operating conditions. The power conversion core implements a proprietary algorithm that allows seamless transitions and glitch-free operation between the buck and the boost modes as the battery voltage drops during operation.
The ISL97901 provides I/O pins to interface with Intersil's optical sensor IC's for white balance control. White balance is achieved by closing the opto-electrical loop which allows for LED light output to get calibrated against preset target values. The ISL97901 can also be configured to run in an open-loop manner if real-time white balance control is not desired. In this case, the LED currents are set by the internal registers.
LED Driver IC 4 Output DC DC Regulator Step-Down (Buck), Step-Up (Boost) I²C Dimming 375mA 28-QFN (4x5)
Manufacturer: Intersil
Win Source Part Number: 205611-ISL97901CRZ-T
Packaging: Reel - TR
Type: DC DC Regulator
Mounting: SMD (SMT)
Frequency: 2.5MHz
Internal Switch(s): Yes
Topology: Step-Down (Buck), Step-Up (Boost)
Number of Outputs: 4
Dimming: I2C
Output Voltage: 5.5V
Categories: Integrated Circuits
Status: Active
Temperature Range - Operating: 0°C to 70°C (TA)
Case / Package: 28-QFN (4x5)
Maximum Supply Voltage: 5.5V
Operating Input Voltage(Min): 2.7V
Channel Output Current: 375mA
Popularity: Medium
Fake Threat In the Open Market: 66 pct.
Supply and Demand Status: Balance
IC LED DRV RGLTR I2C 375MA 28QFN
LED Lighting Drivers "High Current RGB Dr iver/Controller, 28L
IC LED DRIVER RGLTR DIM 28QFN
| Renesas Electronics Corporation | DigiKey | Win Source Electronics | Shenzhen Shengyu Electronics Technology Limited | VAST STOCK CO., LIMITED | Lingto Electronic Limited | |
|---|---|---|---|---|---|---|
| Product Category | LED Drivers | LED Drivers | LED Drivers | LED Drivers | LED Drivers | LED Drivers |
| Product Number | ISL97901CRZ-TK | ISL97901CRZ-TK-ND | 205611-ISL97901CRZ-TK | ISL97901CRZ-TK | ISL97901CRZ-TK | ISL97901CRZ-TK |
| Product Name | RGB Buck-Boost Four-Channel LED Driver with Color Sequencing and Automatic White Balance | LED Drivers | PMIC - PMIC - LED Drivers - ISL97901CRZ-TK | Integrated Circuits (ICs) - Power Management (PMIC) - LED Drivers | LED Lighting Drivers | PMIC - LED Drivers |
| Form Factor | Intgrated Circuit (IC) | Intgrated Circuit (IC) | Intgrated Circuit (IC) | |||
| Type | RGB | Dimmable | ||||
| Input Voltage | 2.7 to 5.5 volts | 2.7 to 5.5 volts | 2.7 volts | 2.7 to 5.5 volts | ||
| Output Voltage | 5.5 volts | 5.5 volts | 5.5 volts | |||
| Output Current | 1500 milliamps | 375 milliamps | 375 milliamps | 375 milliamps |
