The IS32LT3965 is a synchronous DC/DC switching LED driver that integrates high-side and low-side Nchannel MOSFETs to operate in a Buck configuration. The device can operate from a wide input voltage between 3.8V and 38V and provides a constant current of up to 1.5A for driving a single LED or multiple series connected LEDs. The external resistor, RIS, is us.
• Wide input voltage supply from 3.8V to 38V
• High-side sense and true average output current
control, up to 1.5A maximum over temperature range
• Operating frequency up to 2.2MHz
• Forced Continuous Conduction Mode (FCCM) operation
• Integrated high-side and low-side MOSFET switches
• Cycle-by-cycle current limit
• Dimming via PWM logic input or analog voltage - Supports LED thermal roll-off or LED binning
• Internal control loop compensation
• Externally programmable undervoltage lockout (UVLO)
• 1μA low power shutdown
• Spread spectrum to optimize EMI
• Robust fault protection and reportin.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | IS32LT3952 |
Lumissil |
CONSTANT-CURRENT 1.5-AMPERE PWM DIMMABLE BUCK REGULATOR LED DRIVER | |
2 | IS32LT3953 |
Lumissil |
CONSTANT-CURRENT 3-AMPERE PWM DIMMABLE BUCK REGULATOR LED DRIVER | |
3 | IS32LT3953 |
ISSI |
CONSTANT-CURRENT 3-AMPERE PWM DIMMABLE BUCK REGULATOR LED DRIVER | |
4 | IS32LT3953B |
Lumissil |
CONSTANT-CURRENT 3-AMPERE PWM DIMMABLE BUCK REGULATOR LED DRIVER | |
5 | IS32LT3954 |
Lumissil |
CONSTANT-CURRENT 3-AMPERE PWM DIMMABLE BUCK REGULATOR LED DRIVER | |
6 | IS32LT3954A |
Lumissil |
CONSTANT-CURRENT 3-AMPERE PWM DIMMABLE BUCK REGULATOR LED DRIVER | |
7 | IS32LT3957A |
Lumissil |
HIGH VOLTAGE LED LIGHTING CONTROLLER | |
8 | IS32LT3958 |
Lumissil |
HIGH VOLTAGE LED LIGHTING CONTROLLER | |
9 | IS32LT3958A |
Lumissil |
HIGH VOLTAGE LED LIGHTING CONTROLLER | |
10 | IS32LT3117 |
ISSI |
4-CHANNEL CONSTANT CURRENT REGULATOR | |
11 | IS32LT3120 |
Lumissil |
LINEAR LED DRIVER | |
12 | IS32LT3120 |
ISSI |
LINEAR LED DRIVER |