| Part Number | UC2845 Datasheet |
|---|---|
| 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 Of.
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. |
UC2845 Datasheet and Specifications PDF
The UC2845 is a High Performance Current-Mode Controller.
Key Specifications
| Package | DIP |
|---|---|
| Mount Type | Through Hole |
| Pins | 8 |
| Max Voltage (typical range) | 30 V |
| Max Frequency | 500 kHz |
| Height | 3.32 mm |
| Length | 10.92 mm |
| Width | 7.62 mm |
| Part Number | UC2845 Datasheet |
|---|---|
| Description | fixed frequency current mode PWM controller |
| Manufacturer | UMW |
| Overview |
The 2842/43/44/45 are fixed frequency current mode PWM controller. They are specially designed for OFFâLine and DC to DC converter applications with a minimal external components. Internally implemen.
Pin Connection
* Low Start-Up and Operating Current * High Current Totem Pole Output * Undervoltage Lockout With Hysteresis * Operating Frequency Up To 500KHz Block diagram (toggle flip flop used only in 2844, 2845) V Top view R T Absolute Maximum Ratings Symbol Parameter VCC IO VI ISINK (. |
| Part Number | UC2845 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, Minidip SO14 lo. |
| Part Number | UC2845 Datasheet |
|---|---|
| Description | HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS |
| Manufacturer | Unisonic Technologies |
| Overview | The UTC UC2844/2845 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 * Output deadtime adjustable from 50% to 70% * 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 hysteresi. |