STMicroelectronics UC3844A
the UC3844A and UC3845A by the addition of an internal toggle flip flop which blanks the output off every other clock cycle.| Part No. | UC3844A |
|---|---|
| Datasheet | UC3844A Download |
| Manufacturer |  STMicroelectronics |
| Description | HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER |
| Buy | Stock & Price |
FEATURES
Figure 1. Package● TRIMMED OSCILLATOR DISCHARGE CURRENT
● CURRENT MODE OPERATION TO 500kHz AUTOMATIC FEED FORWARD COMPENSATION DIP-8 SO-8
● LATCHING PWM FOR CYCLE-BY-CYCLE CURRENT LIMITING Table 1. Order Codes
● INTERNALLY TRIMMED REFERENCE WITH Part Number Package UNDERVOLTAGE LOCKOUT
● HIGH CURRENT TOTEM POLE OUTPUT t(s)UNDERVOLTAGE LOCKOUT WITH HYSTERESIS c● LOW START-UP CURRENT (< 0.5mA) uDOUBLE PULSE SUPPRESSION rod2
DESCRIPTION
PThe UC384xA family of control ICs provides the necessary features to implement off-line or DC to teDC fixed frequency current mode control schemes lewith a minimal external parts count. Internally imoplemented circuits include a trimmed oscillator for sprecise DUTY CYCLE CONTROL under voltage blockout featuring start-up current less than 0.5mA, Oa precision reference trimmed for accuracy at the -error amp input, logic to insure latched operation, )a PWM comparator which also provides current t(slimit control, and a totem pole output stage decsigned to source or sink high peak current.
