HomedatasheetUC3842D8

UC3842D8 Datasheet

Current Mode PWM Controllers
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Description

The UC3842D8 /3/4/5 family of control ICs 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 circuits include under-voltage lockout featuring start up current less than 1mA, 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. The output stage, suitable for driving N Channel MOSFETs, is low in the off state. UC3842D8 Features &bull; Optimized For Off-line And DC To DC Converters&bull; Low Start Up Current (<1mA)&bull; Automatic Feed Forward Compensation&bull; Pulse-by-pulse Current Limiting&bull; Enhanced Load Response Characteristics&bull; Under-voltage Lockout With Hysteresis&bull; Double Pulse Suppression&bull; High Current Totem Pole Output&bull; Internally Trimmed Bandgap Reference&bull; 500khz Operation&bull; Low RO Error Amp
Features

Parameters

[{"Name":"Switching Frequency","Value":"500 kHz "},{"Name":"Rise Time","Value":"50 ns"},{"Name":"Fall Time ","Value":"50 ns "},{"Name":"Number of Outputs","Value":"1"},{"Name":"Maximum Operating Temperature","Value":"+ 70 C "},{"Name":"Mounting Style","Value":"SMD/SMT"},{"Name":"Package / Case ","Value":"SOIC-8"}]

Manufacturer information

SEIKO INSTRUMENTS

Seiko Instruments Inc. Is a Japanese company which head office is located in 8, Nakase 1-chome, Mihama-ku, Chiba-shi, Chiba 261-8507, Japan . It’s business lines are: Watches Business Watches, Watch Movements Electronic Components Business Quartz crystals, Micro batteries, etc. Precision Mechatronics Business Inkjet printer heads, Hard disk components, Thermal printers, Compact precision components, Machine tools, FA, Musical instrument accessories, Radiation detection and measurement systems, etc.


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