Features  Constant current output value is not affected by the output load voltage.  Wide constant current output range: 5~180mA  The current output value (5~180mA) can be adjusted using an external resistor.  Low ICC current, only 300uA, helps improve lamp efficiency.  Built-in over-temperature protection circuit (OTP)  Minimum output overdrive voltage: 0.35V@IOUT=120mA  Output withstand voltage up to 32V, can be used for 24V LED strip PWM dimming, non-dimming LED strips. The maximum voltage can reach 48V.  Current mismatch between chips <±5%@ IOUT=120mA Applications  Constant current LED module  Constant current LED strip  LED daylight lamp  LED backlight

INK1101 is a single-channel constant current LED linear driver IC, providing a constant output current ranging from 5mA to 120mA. The output current can be set via an external resistor (RFB), and the output can withstand a maximum voltage of 32V. The operating voltage range of the chip is 3.3V to 5.5V. With a low current setting voltage of 0.3V and a low voltage drop driver stage of 50mV, INK1101 can provide stable current output over a wide driving voltage range, greatly enhancing the cascading capability of constant current light strip modules. INK1101 features few external components and high application reliability. The chip includes a high-precision bandgap reference source, a 5.5V voltage regulator, an over-temperature protection circuit, and a low-voltage drop driver circuit. The chip also provides a DIM pin for output enable control. This pin has an internal pull-up resistor; when the enable pin is not used, it is left floating, and the constant current output is enabled by default. Users can also use 5V logic to control the output current via this pin, achieving high-quality PWM dimming, such as using it with INK1003 as a high-power constant current driver. INK1101 has a built-in temperature sensor and overheat protection function. The internal temperature sensor can detect the temperature status of INK1101; when the internal temperature of the INK1101 chip exceeds 150℃, the over-temperature protection circuit will activate and shut off the constant current output. When the chip's junction temperature falls below 130℃, the constant current output will resume. INK1101 uses a small SOT23-5 package, suitable for high-quality LED modules and strip applications, with an operating temperature range of -40℃ to 85℃.