BK30 Series
Ultra-Low Noise, Optocoupler-Enhanced Linear Regulators
Description
BK30 is a series of ultra-low noise, optocoupler-enhanced linear voltage regulators that use Polaris Semiconductor’s patented circuit topology. Built around the premium LT3045 LDO and integrated with our high-efficiency optocoupler chips, these devices deliver best-in-class noise and PSRR performance while achieving efficiencies 1.2X to >2X higher than conventional LDOs.
The BK30 series is available in a range of input and output configurations to address diverse application requirements. Available output voltage ranges include 0-2V, 2-4V, and 4-5V, all with adjustable settings within their respective ranges. During optocoupler-enhanced operation, the input voltage requirement exceeds the output voltage by a margin determined by the optocoupler configuration. Product codes ending with “V” feature configurable optocoupler settings via board-level pin connections. For maximum versatility, all BK30 devices can operate as traditional LDOs through a simple two-pin short.
Specifications
| Device | Nominal VOUT Range1 | IIN 2 @ IOUT=0.1A | Min VIN @IOUT=0.1A | QFN Package |
|---|---|---|---|---|
| BK301D18V 3 | 0V-2V | 79mA 63mA |
VOUT+1.4V (L) VOUT+2.8V (M) |
QFN-286x6x0.8mm3 |
| BK301D33L | 2V-4V | TBD | VOUT+1.4V (L) | QFN-327x7x0.8mm3 |
| BK301D33V 3 | 2V-4V | TBD TBD |
VOUT+2.8V (M) VOUT+5.5V (H) |
QFN-327x7x0.8mm3 |
| BK301D50H | 4V-6V | 79mA | VOUT+4.1V (H) | QFN-327x7x0.8mm3 |
| BK300D50E | 4V-5V | 64mA | VOUT+7.0V (E) | QFN-327x7x0.8mm3 |
|
1 All devices are adjustable down to VOUT=0V
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 | 0 V |
| Max VIN | 20 V |
| Max IOUT | 500 mA |
| TID | TBD |
Applications
Ultra Low Noise Supply Requirements
Efficient Point of Load Regulator
RF & Analog Electronics
Medical Devices
Scientific Instrumentation
High Precision Data Converters
Documentation
| Document | Date |
|---|---|
| 25 Feb 2025 | |
| 25 Feb 2025 | |
| 12 Jan 2025 | |
| Application Notes & White Paper |
Coming Soon |
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