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The UC3873 is a high performance current mode PWM controller ideally suited for low standby power. Low VDD startup current make the power reliable on startup design and a large value resistor could be used in the startup circuit to minimize the standby power. At no load condition, the IC operates in power-saving mode for lower standby power, decreasing frequ.
* UTC proprietary frequency hopping technology for Improved EMI performance.
* Power-saving mode for high light-load and standby efficiency
* Soft Start
* Dynamic peak current limiting for constant output power
* Built-in synchronized slope compensation
* OLP, OVP and VDD clamp for higher security
* Programming OTP for higher security
* Fixed switch frequency 65kHz
* Gate output voltage clamped at 15V
* Low start-up current
* Cycle-by-cycle Current Limiting
* Under voltage lockout (UVLO)
* Few external components required
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
UC3.
| No. | Partie # | Fabricant | Description | Fiche Technique |
|---|---|---|---|---|
| 1 | UC3871 |
Unitrode |
Resonant Fluorescent Lamp Driver |
|
| 2 | UC3872 |
Unitrode |
Resonant Lamp Ballast Controller |
|
| 3 | UC3873B |
UTC |
LOW COST POWER-SAVING MODE PWM CONTROLLER |
|
| 4 | UC3873C |
UTC |
LOW COST POWER-SAVING MODE PWM CONTROLLER |
|
| 5 | UC3873H |
UTC |
LOW COST POWER-SAVING MODE PWM CONTROLLER |
|
| 6 | UC3873HL |
UTC |
LOW COST POWER-SAVING MODE PWM CONTROLLER |
|
| 7 | UC3873L |
UTC |
LOW COST POWER-SAVING MODE PWM CONTROLLER |
|
| 8 | UC3874-1 |
Unitrode |
Step-down (Buck) Controllers |
|
| 9 | UC3874-2 |
Unitrode |
Step-down (Buck) Controllers |
|
| 10 | UC3875 |
Unitrode |
Phase Shift Resonant Controller |
|
| 11 | UC3875 |
UTC |
LOW COST POWER-SAVING MODE PWM CONTROLLER |
|
| 12 | UC3875A |
UTC |
LOW COST POWER-SAVING MODE PWM CONTROLLER |
|