BK19 Series
Rad-Hard, Optocoupler-Enhanced Linear Regulators
Description
BK19 is a series of low-noise, switching-free optocoupler-enhanced linear voltage regulators that use Polaris Semiconductor’s patented circuit topology. The devices consist of a radiation hardness assured RH1965 LDO co-packaged with Polaris Semiconductor high-efficiency optocoupler chips. This offers high PSRR, low noise, and guaranteed TID radiation resistance to 200 krad(Si), combined with device efficiencies that are typically 1.2X to >2X greater than a conventional LDO.
The BK19 series is presently available with an adjustable voltage output addressing a range of 1.2-2V. During optocoupler-enhanced operation, the minimum input voltage is greater than the output voltage by an amount depending on the optocoupler configuration. The optocoupler configuration can be set by the pin connections of the chip. The chips can also be operated as conventional LDOs by simply shorting two pins together.
Specifications
| Device | Nominal VOUT Range1 | IIN 2 @ IOUT=0.1A | Min VIN @IOUT=0.1A | QFN Package |
|---|---|---|---|---|
| BK191D18V 3 | 1.2V-2V | 76mA 60mA |
VOUT+1.4V (L) VOUT+2.8V (M) |
QFN-286x6x0.8mm3 |
|
1 All devices are adjustable down to VOUT=1.2V
2 Typical input current after device turn-on
3 Product IDs ending in V are configurable for one of two different input voltage ranges, selectable via board-level pin connections
|
||||
| Min VOUT | 1.2 V |
| Max VIN | 20 V |
| Max IOUT | 900 mA |
| TID | RHA 200 krad(Si) |
Applications
Rad-Hard Space Power Supply
Clean Analog Supply Requirements
Post-Switching Power Supply
Field Programmable Gate Arrays
Data Converters
Imaging Payloads
Documentation
| Document | Date |
|---|---|
| 10 Jan 2025 | |
| 25 Feb 2025 | |
| 12 Jan 2025 | |
| Application Notes & White Paper |
Coming Soon |
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