UC1845A by Microchip Technology
PWM Controller flyback or forward - Low start-up current (0.5mA max.) 500KHz op
No distributors results available
View Full Pricing & Stock ComparisonFeatures
| Optimized For Off-Line Control |
| Low Start-Up Current (<1mA) |
| Automatic Feed Forward Compensation |
| Trimmed Oscillator Discharge Current |
| Pulse-By-Pulse Current Limiting |
| Enhanced Load Response Characteristics - |
| Double-Pulse Suppression |
| High-Current Totem-Pole Output (1A Peak) |
| Internally Trimmed Band-gap Reference |
| 500kHz Operation Under-voltage Lockout: SG1843 - 8.4 volts |
| Low Shoot-Through Current <75mA Over Temperature |
Specifications
| Regulator Type | HI Rel Switching Regulators |
|---|---|
| Configuration | Current Mode PWMs |
UC1845A Analog and Mixed-Signal by Texas Instruments
Current Mode PWM Controller 8-CDIP -55 to 125
Specifications
| Features | Error Amplifier,Multi-topology |
|---|---|
| Package size | mm2:W x L (PKG) : See datasheet (CDIP),[pf]20LCCC[/pf]: 79 mm2: 8.89 x 8.89 (LCCC|20) |
| UVLO thresholds on/off(V) | 8.4/7.6 |
| Rating | Military |
| Operating temperature range(C) | -55 to 125 |
| Control method | Current |
| Topology | Boost,Flyback,Forward |
| Frequency(Max)(kHz) | 500 |
| Duty cycle(Max)(%) | 50 |
| Package Group | CDIP|8,LCCC|20 |
| Gate drive(Typ)(A) | 1 |
Frequently Asked Questions
Where can I find additional details, specifications and documents for a UC1845A?
Additional datasheets, footprints and schematics for UC1845A are listed on our Part Details page. You can also find images and similar parts to UC1845A on this page.
What pricing and inventory information can I view?
Distributor pricing and stock information is available for UC1845A on our Product Comparison page. Access via the 'View Pricing & Stock' button to view UC1845A price breaks, MOQs, lead times, inventory and SKUs from distributors.
Who can I contact for technical support of the product?
Submit any questions directly to the customer support team of the distributor listing the product. For the UC1845A you can contact the distributor directly for product support, shipping queries etc.
Is the UC1845A RoHS compliant?
This part has not been flagged as RoHS Compliant.
Which authorised distributors for UC1845A have stock available?
There is no stock from authorised distributors for UC1845A.
How do I check stock and lead times for all distributors?
Stock availability and lead times will be displayed for UC1845A often in real-time on the comparison pages.
What if I can't find stock of UC1845A?
You can fill out our help required form which you can use to request a quote for UC1845A from some of our verified obsolescence suppliers. Alternatively, contact us via our web chat in the bottom left of your screen and one of our team will try to help.