| Part Number | UC3845 Datasheet |
|---|---|
| Manufacturer | Fairchild Semiconductor |
| Overview |
The UC3842/UC3843/UC3844/UC3845 are fixed frequencycurrent-mode PWM controller. They are specially designed for Off-Line and DC to DC converter applications with minimum external components. These int.
* * * * Low Start up Current Maximum Duty Clamp UVLO With Hysteresis Operating Frequency up to 500KHz Description The UC3842/UC3843/UC3844/UC3845 are fixed frequencycurrent-mode PWM controller. They are specially designed for Off-Line and DC to DC converter applications with minimum external compon. |
UC3845 Datasheet and Specifications PDF
The UC3845 is a SMPS Controller.
| Part Number | UC3845 Datasheet |
|---|---|
| Description | CURRENTMODE PWM CONTROLLER |
| Manufacturer | STMicroelectronics |
| Overview | TheUC3842/3/4/5family of controlICs provides the necessary features to implement off-line or DC to DC fixed frequency current mode control schemes with a minimal externalparts count.Internallyimplemen. to implement off-line or DC to DC fixed frequency current mode control schemes with a minimal externalparts count.Internallyimplementedcircuits include undervoltagelockout featuring start-up current less than 1 mA, a precision reference trimmed for accuracy at the error amp input, logic to insure l. |
| Part Number | UC3845 Datasheet |
|---|---|
| Description | High Performance Current Mode Controllers |
| Manufacturer | onsemi |
| Overview |
UC3844, UC3845, UC2844, UC2845 High Performance Current Mode Controllers
The UC3844, UC3845 series are high performance fixed frequency current mode controllers. They are specifically designed for Off.
consisting of input and reference undervoltage lockouts each with hysteresis, cycle *by *cycle current limiting, a latch for single pulse metering, and a flip *flop which blanks the output off every other oscillator cycle, allowing output dead times to be programmed for 50% to 70%. These devices are av. |
| Part Number | UC3845 Datasheet |
|---|---|
| Description | HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS |
| Manufacturer | Unisonic Technologies |
| Overview |
The UTC UC3844/3845 are high performance fixed frequency current mode controllers that specifically designed for Off-Line and DC to DC converter applications with minimal external parts count.
The dif.
* Operation output switching frequency up to 500 kHz * Automatic feed forward compensation * Latching PWM for cycle-by-cycle current limiting * High current totem pole output * Internally trimmed reference with under voltage lockout * UVLO with hysteresis * Low startup and operating current
* ORDER. |