UC3854BN UNITRODE, UC3854BN Datasheet
UC3854BN
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UC3854BN Summary of contents
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ADVANCED HIGH-POWER FACTOR PREREGULATOR FEATURES 1 Controls Boost PWM to Near-Unity Power Factor Limits Line Current Distortion To <3% World-Wide Operation Without Switches Accurate Power Limiting Fixed-Frequency Average Current-Mode Control High Bandwidth (5 MHz), Low-Offset Current Amplifier Integrated Current- ...
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UC1854A UC2854A, UC2854B UC3854A, UC3854B SLUS329E – MONTH 2003 – REVISED JANUARY 2008 These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic ...
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RECOMMENDED OPERATING CONDITIONS over operating free-air temperature range (unless otherwise noted) V Supply voltage CC T Operating junction temperature J THERMAL RESISTANCE RESISTANCES ( C/ C/W) JA (1) data values stated are derived from MIL-STD-1835B which states ...
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UC1854A UC2854A, UC2854B UC3854A, UC3854B SLUS329E – MONTH 2003 – REVISED JANUARY 2008 ELECTRICAL CHARACTERISTICS 8.2 kΩ 1.5 nF –40 C < T < ...
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ELECTRICAL CHARACTERISTICS (Continued 8.2 kΩ 1.5 nF –40 C < T < for the UC2854A and UC2854B, and 0 C < ...
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UC1854A UC2854A, UC2854B UC3854A, UC3854B SLUS329E – MONTH 2003 – REVISED JANUARY 2008 PACKAGE DESCRIPTION J, N and DW PACKAGES (TOP VIEW) GND GTDRV 1 16 PKLMT VCC 2 15 CAO ISENSE MOUT RSET ...
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TERMINAL PACKAGES I/O NAME J/N/DW Q/L Output of the wide bandwidth current amplifier and one of the inputs to the PWM duty-cycle CAO comparator. The output signal generated by this amplifier commands the PWM to force ...
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UC1854A UC2854A, UC2854B UC3854A, UC3854B SLUS329E – MONTH 2003 – REVISED JANUARY 2008 FUNCTIONAL DESCRIPTION The UC3854A and UC3854B family of products are designed as pin compatible upgrades to the industry standard UC3854 active power factor correction circuits. The circuit ...
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Voltage Amplifier The UC3854A/B voltage amplifier design is essentially similar to the UC3854 with two exceptions. The first is with the internal connection. The lower voltage reduces the amount of charge on the compensation capacitors, which provides improved recovery ...
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UC1854A UC2854A, UC2854B UC3854A, UC3854B SLUS329E – MONTH 2003 – REVISED JANUARY 2008 GATE DRIVE TIMING vs LOAD CAPACITANCE 800 700 Fall Time 600 500 400 Rise Time 300 200 100 0 0 0.01 0.02 0.03 C − Load Capacitance ...
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TYPICAL CHARACTERISTICS (continued) CURRENT AMPLIFIER GAIN vs FREQUENCY 140 120 100 −20 GAIN − 5.992 MHz CO − 100 − Frequency − Hz Figure 5. 1 ...
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PACKAGING INFORMATION (1) Orderable Device Status 5962-9326102M2A OBSOLETE 5962-9326102MEA ACTIVE UC1854BJ ACTIVE UC1854BJ883B ACTIVE UC1854BL OBSOLETE UC1854BL883B OBSOLETE UC2854ADW ACTIVE UC2854ADWG4 ACTIVE UC2854ADWTR ACTIVE UC2854ADWTRG4 ACTIVE UC2854AN ACTIVE UC2854ANG4 ACTIVE UC2854BDW ACTIVE UC2854BDWG4 ACTIVE UC2854BDWTR ACTIVE UC2854BDWTRG4 ACTIVE UC2854BN ...
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... UC3854BDWG4 ACTIVE UC3854BDWTR ACTIVE UC3854BDWTRG4 ACTIVE UC3854BN ACTIVE UC3854BNG4 ACTIVE UC3854BQ OBSOLETE (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design ...
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TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Type Drawing UC2854ADWTR SOIC DW UC2854BDWTR SOIC DW UC3854ADWTR SOIC DW UC3854BDWTR SOIC DW PACKAGE MATERIALS INFORMATION Pins SPQ Reel Reel A0 (mm) Diameter Width (mm) W1 (mm) ...
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Device Package Type UC2854ADWTR SOIC UC2854BDWTR SOIC UC3854ADWTR SOIC UC3854BDWTR SOIC PACKAGE MATERIALS INFORMATION Package Drawing Pins SPQ Length (mm 2000 DW 16 2000 DW 16 2000 DW 16 2000 Pack Materials-Page 2 ...
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Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the ...