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UC3844 Datasheet

Part Number UC3844
Manufacturers UTC
Logo UTC
Description HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS
Datasheet UC3844 DatasheetUC3844 Datasheet (PDF)

UNISONIC TECHNOLOGIES CO., LTD UC3844/45 LINEAR INTEGRATED CIRCUIT HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS  DESCRIPTION The UTC UC3844/3845 are high performance fixed frequency current mode controllers that specifically designed for Off-Line and DC to DC converter applications with minimal external parts count. The differences between UC3844 and UC3845 are the maximum duty cycle ranges and under-voltage lockout thresholds. The UC3844 ideally suited to off-line applications with UVLO t.

  UC3844   UC3844






Part Number UC3844
Manufacturers STMicroelectronics
Logo STMicroelectronics
Description CURRENTMODE PWM CONTROLLER
Datasheet UC3844 DatasheetUC3844 Datasheet (PDF)

www.DataSheet4U.com ® UC2842/3/4/5 UC3842/3/4/5 CURRENT MODE PWM CONTROLLER . . . . . . . . . . . OPTIMIZED FOR OFF-LINE AND DC TO DC CONVERTERS LOW START-UP CURRENT (< 1 mA) 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 500 KHz OPERATION LOW RO ERROR AMP Minidip SO14 DESCRIPTION TheUC3842/3/4/5famil.

  UC3844   UC3844







Part Number UC3844
Manufacturers ON Semiconductor
Logo ON Semiconductor
Description High Performance Current-Mode Controller
Datasheet UC3844 DatasheetUC3844 Datasheet (PDF)

UC3844, UC3845, UC2844, UC2845 High Performance Current Mode Controllers The UC3844, UC3845 series are high performance fixed frequency current mode controllers. They are specifically designed for Off−Line and DC−to−DC converter applications offering the designer a cost effective solution with minimal external components. These integrated circuits feature an oscillator, a temperature compensated reference, high gain error amplifier, current sensing comparator, and a high current totem pole outpu.

  UC3844   UC3844







Part Number UC3844
Manufacturers Fairchild Semiconductor
Logo Fairchild Semiconductor
Description SMPS Controller
Datasheet UC3844 DatasheetUC3844 Datasheet (PDF)

www.DataSheet4U.com www.fairchildsemi.com UC3842/UC3843/UC3844/UC3845 SMPS Controller Features • • • • Low Start up Current Maximum Duty Clamp UVLO With Hysteresis Operating Frequency up to 500KHz Description The UC3842/UC3843/UC3844/UC3845 are fixed frequencycurrent-mode PWM controller. They are specially designed for Off-Line and DC to DC converter applications with minimum external components. These integrated circuits feature a trimmed oscillator for precise duty cycle control, a temperat.

  UC3844   UC3844







Part Number UC3844
Manufacturers Texas Instruments
Logo Texas Instruments
Description Current-Mode PWM Controllers
Datasheet UC3844 DatasheetUC3844 Datasheet (PDF)

UC1842, UC2842, UC3842, UC1843, UC2843, UC3843 UC1844, UC2844, UC3844, UC1845, UC2845, UC3845 SLUS223G – APRIL 1997 – REVISED JULY 2022 UCx84x Current-Mode PWM Controllers 1 Features • Optimized for off-line and DC-to-DC converters • Low start-up current (< 1 mA) • Automatic feedforward compensation • Pulse-by-pulse current limiting • Enhanced load-response characteristics • Undervoltage lockout with hysteresis • Double-pulse suppression • High-current totem-pole output • Internally trimmed ban.

  UC3844   UC3844







HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS

UNISONIC TECHNOLOGIES CO., LTD UC3844/45 LINEAR INTEGRATED CIRCUIT HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS  DESCRIPTION The UTC UC3844/3845 are high performance fixed frequency current mode controllers that specifically designed for Off-Line and DC to DC converter applications with minimal external parts count. The differences between UC3844 and UC3845 are the maximum duty cycle ranges and under-voltage lockout thresholds. The UC3844 ideally suited to off-line applications with UVLO thresholds of 16V(ON) and 10V(OFF), and UC3845 has UVLO thresholds of 8.5V(ON) and 7.6V(OFF) for lower voltage applications.  FEATURES * Operation output switching frequency up to 500 kHz * Automatic feed forward compensation * Latching PWM for cycle-by-cycle current limiting * High current totem pole output * Internally trimmed reference with under voltage lockout * UVLO with hysteresis * Low startup and operating current  ORDERING INFORMATION Ordering Number Lead Free Halogen Free UC3844L-D08-T UC3844G-D08-T UC3844L-S08-R UC3844G-S08-R UC3845L-D08-T UC3845G-D08-T UC3845L-S08-R UC3845G-S08-R Package DIP-8 SOP-8 DIP-8 SOP-8 Packing Tube Tape Reel Tube Tape Reel UC3844G-D08-T (1)Packing Type (2)Package Type (3)Green Package (1) T: Tube, R: Tape Reel (2) D08: DIP-8, S08: SOP-8 (3) G: Halogen Free and Lead Free, L: Lead Free www.unisonic.com.tw Copyright © 2019 Unisonic Technologies Co., Ltd 1 of 7 QW-R103-010.L UC3844/45  MARKING PACKAGE DIP-8 UC3844 SOP-8  PIN .


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