UC3842BN | STMicroelectronics
UC3842BN, Current-mode PWM controller, PDIP8, STMicroelectronics
NCNR (non cancelable / non returnable)
IC, UC3842BN, STMicroelectronics
The UC3842BN provides the necessary features to implement off-line or DC to DC fixed frequency current mode control schemes with a minimal external parts count. Internally implemented circuit includes a trimmed oscillator for precise DUTY CYCLE CONTROL under voltage lockout featuring start-up current less than 0.5 mA, a precision reference trimmed for accuracy at the error amp input, logic to insure latched operation, a PWM comparator which also provides current limit control, and a totem pole output stage designed to source or sink high peak current.
Features
- Undervoltage lockout with hysteresis
- Current mode operation to 500 kHz
| Filter | Property | Value |
|---|---|---|
| Enclosure | DIP-8 | |
| Assembly | THT | |
| Frequency | 500 kHz | |
| min. operating temperature | -40 °C | |
| max. operating temperature | 150 °C |
| Property | Value |
|---|---|
| MSL | MSL 1 |
| Customs tariff number | 85423390 |
| Original Packaging | Bar with 50 pieces |
| Country of origin | QU |
| Property | Value |
|---|---|
| Date of RoHS guidelines | 6/8/11 |
| RoHS conform | Yes |
| SVHC free | Yes |