UC1842AY

Space-grade Power Management; ·Low start-up current (0.5mA max.)·Trimmed oscillator discharge current·Optimized for off-line and DC-to-DC converters·Automatic feed forward compensation·Pulse-by-pulse current limiting·Enhanced load response characteristics·Under-voltage lockout with hysteresis·Double pulse suppression·High-current totem pole output·Internally trimmed bandgap reference·500KHz operation·Low Ro error amplifier KEY FEATURES·Economical off-line flyback or forward converters·DC-DC buck or boost converters·Low cost DC motor control;

The UC184xA family of control ICs provides all the necessary features to implement off-line fixed-frequency, current-mode switching power supplies with a minimum of external components. The current mode architecture demonstrates improved load regulation, pulse-by- pulse current limiting and inherent protection of the power supply output switch. The IC includes: A bandgap reference trimmed to ±1% accuracy, an error amplifier, a current sense comparator with internal clamp to 1V, a high current totem pole output stage for fast switching of power MOSFET's, and an externally programmable oscillator to set frequency and maximum duty cycle. The undervoltage lock-out is designed to operate with 250µA typ. start-up current, allowing an efficient bootstrap supply voltage design. Available options for this family of products, such as startup voltage hysteresis and duty cycle, are summarized below in the Available Options section. The UC184xA family of control ICs is also available in 14-pin SOIC package which makes the Power Output Stage Collector and Ground pins available. FEATURES·Low start-up current (0.5mA max.)·Trimmed oscillator discharge current·Optimized for off-line and DC-to-DC converters·Automatic feed forward compensation·Pulse-by-pulse current limiting·Enhanced load response characteristics·Under-voltage lockout with hysteresis·Double pulse suppression·High-current totem pole output·Internally trimmed bandgap reference·500KHz operation·Low Ro error amplifier KEY FEATURES·Economical off-line flyback or forward converters·DC-DC buck or boost converters·Low cost DC motor control

UC1842AY

Package：8-CDIP（0.300"，7.62mm）；包装：管件 功能：升压，降压 类别：集成电路（IC） PMIC - 稳压器 - DC DC 开关式控制器 描述：IC PWM CTRLR CURR MODE 8CDIP

UC1842AY

Package：8-CDIP（0.300"，7.62mm）；包装：管件 功能：升压，降压 类别：集成电路（IC） DC-DC 开关控制器 描述：IC PWM CTRLR CURR MODE 8CDIP

UC1842J

CurrentModePWMController

UC1842J

CURRENTMODEPWMCONTROLLER

UC1842J

CURRENTMODEPWMCONTROLLER