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SGLS164 – APRIL 2003 D 8-PIN PACKAGE (TOP VIEW) COMP VFB ISENSE RT/CT 1 2 3 4 8 VREF 7 VCC 6 OUTPUT 5 GND D 14-PIN PACKAGE (TOP VIEW) COMP NC VFB NC ISENSE NC RT/CT 1 2 3 4 5 6 7 14 VREF 13 NC 12 VCC 11 VC 10 OUTPUT 9 GND 8 PWR GND The UC2842A/3A/4A/5A family of control ICs is a pin for pin compatible improved version of the UC2842/3/4/5 family. Pro.
to control current mode switched mode power supplies, this family has the following improved features. Start up current is guaranteed to be less than 0.5 mA. Oscillator discharge is trimmed to 8.3 mA. During under voltage lockout, the output stage can sink at least 10 mA at less than 1.2 V for VCC over 5 V. The difference between members of this family are shown in the table below. PART NUMBER UC2842A UC2843A UC2844A UC2845A UVLO ON 16 V 8.5 V 16 V 8.5 V UVLO OFF 10 V 7.9 V 10 V 7.9 V MAXIMUM DUTY CYCLE <100% <100% <50% <50% Please be aware that an important notice concerning availability.
| No. | Partie # | Fabricant | Description | Fiche Technique |
|---|---|---|---|---|
| 1 | UC2845A |
ST Microelectronics |
HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER |
|
| 2 | UC2845A |
LINFINITY |
CURRENT MODE PWM CONTROLLER |
|
| 3 | UC2845A |
Texas Instruments |
Current-Mode PWM Controllers |
|
| 4 | UC2845A |
Unitrode |
Current Mode PWM Controller |
|
| 5 | UC2845 |
STMicroelectronics |
CURRENTMODE PWM CONTROLLER |
|
| 6 | UC2845 |
Texas Instruments |
Current-Mode PWM Controller |
|
| 7 | UC2845 |
ON Semiconductor |
High Performance Current-Mode Controller |
|
| 8 | UC2845 |
Unisonic Technologies |
HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS |
|
| 9 | UC2845B |
ON Semiconductor |
High Performance Current Mode Controllers |
|
| 10 | UC2845B |
ST Microelectronics |
HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER |
|
| 11 | UC2845BN |
ST Microelectronics |
HIGH-PERFORMANCE PWM CONTROLLER |
|
| 12 | UC2845D |
Texas Instruments |
Current-Mode PWM Controller |
|