ISL21009DFB825Z-TK

The ISL21009DFB825Z-TK is an ultra-small micropower voltage reference, specifically designed for device designs requiring minimal operating current along with precision voltage reference performance. This device is categorized as a PMIC (Power Management Integrated Circuit) Voltage Reference, and provides accuracy across a wide temperature range, from -40°C to +125°C, allowing designers to produce devices that are reliable under a variety of conditions. The ISL21009DFB825Z-TK offers a broad range of applications, making it the ideal choice for low voltage and high current systems.

The ISL21009DFB825Z-TK is available with a selection of four different output voltages, ranging from 0.8V to 1.2V, allowing designers to select the appropriate voltage for their application. Additionally, the device provides an active-low reset option, which can be used to strategically reduce total power consumption, or to provide programming flexibility. Other features include power-on reset, output voltage controlled with an input voltage, and a programmable output voltage.

The ISL21009DFB825Z-TK utilizes a single resistor voltage divider to set the output voltage level. The resistor is divided by the device’s current reference (Iref) to set the output voltage. This method of setting the output voltage reflects the current draw of the device, eliminating the need for a power transistor for current control. Additionally, this feature eliminates the potential for battery drain, which can be an issue with devices that require the use of a power transistor for current control.

The ISL21009DFB825Z-TK is capable of sourcing up to 30mA at the output. This current output is possible even when the supply voltage is as low as 0.5V, making it ideal for low voltage/high current applications such as for powering embedded optical receivers or sensors. Additionally, the device has a low input voltage operation mode, so it can be used for ultra-low power operations in battery powered devices, or other applications that must conserve power.

The device is designed to meet the requirements of JEDEC standard JESD220-D, guaranteeing accuracy over a wide temperature range. It is tested to a nominal voltage of ±1% accuracy over the temperature range of -40°C to +125°C, and the device is well-suited for low-power applications that require a tight output tolerance. Additionally, the device is well-suited for battery powered applications due to its low minimum input voltage (0.5V).

The ISL21009DFB825Z-TK is also designed to have a minimum output impedance of 10kohm and high gain bandwidth (10kHz minimum). These features are important for applications that require high-precision, fast-switching output voltages. The device also features a small-footprint narrow body package, making it ideal for applications with limited space.

In summary, the ISL21009DFB825Z-TK is an ideal solution for low-power, battery powered applications that require a high accurate output voltage. The device is an ultra-small micropower voltage reference, specifically designed for ultra-low current draw along with tight output tolerance. It is available with four different output voltages, from 0.8V to 1.2V, and offers a broad range of applications, from powering embedded optical receivers and sensors to providing programming flexibility. Additionally, the device offers a low input voltage operation mode, minimum output impedance of 10kohm, and high gain bandwidth, making it suitable for a variety of different applications.