UCC35701D UNITRODE, UCC35701D Datasheet
UCC35701D
Specifications of UCC35701D
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UCC35701D Summary of contents
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Advanced Voltage Mode Pulse Width Modulator FEATURES 700kHz Operation Integrated Oscillator/ Voltage Feed Forward Compensation Accurate Duty Cycle Limit Accurate Volt-second Clamp Optocoupler Interface Fault Counting Shutdown Fault Latch off or Automatic Shutdown Soft Stop Optimized for Synchronous Rectification 1A ...
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... REF Line Regulation Load Regulation Short Circuit Current ORDERING INFORMATION T –55°C to +125°C –40°C to +85°C 0°C to +70°C The D and PW packages are available taped and reeled. Add TR suffix to the device type (e.g., UCC35701DTR GND 12 VREF 11 S YNC 10 CT ...
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ELECTRICAL CHARACTERISTICS: 0 2.0V, and no load on the outputs. FF PARAMETER Line Sense Vth High Line Comparator Vth Low Line Comparator Input Bias Current Oscillator Section Frequency Frequency SYNC VIH SYNC VIL SYNC Input Current RT ...
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DETAILED BLOCK DIAGRAM 2*I RT VFF 0. 1. CLAMP REF I 0. CURRENT FAULT 0.6V ILIM 2 CURRENT LIMIT 0. ...
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PIN DESCRIPTIONS (cont.) VSCLAMP: Voltage at this pin is compared to the CT voltage, providing a constant volt-second limit. The com- parator output terminates the PWM pulse when the ramp voltage exceeds VSCLAMP. The maximum on time is given by: ...
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APPLICATION INFORMATION (cont.) Output Inhibit During normal operation, OUT is driven high at the start of a clock period and is driven low by voltages on CT VSCLAMP. The following conditions cause the output to be immedi- ately ...
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... Pin 10 was changed from RAMP to CT (single timing capacitor) Pin 11 was changed from FREQ to SYNC (input only) Additional Information Please refer to the following two Unitrode application topics on UCC3570 for additional information. [1] Application Note U-150, Applying the UCC3570 Volt- age-Mode PWM Controller to Both Off-line and DC/DC Converter Designs by Robert A ...
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TYPICAL WAVEFORMS (cont.) Figure 2. Timing diagram for oscillator waveforms showing feedforward action and synchronization. TYPICAL CHARACTERISTIC CURVES 1000 100 100 Figure 3. Oscillator frequency vs. RT and CT. 1.02 CT=330pF F = 100kHz ...
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APPLICATION INFORMATION (cont NEW ...
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REVISION HISTORY DATE REVISION 02/16/05 SLUS293B 6/16/05 SLUS293C REASON Add FB to abs max table. Created revision history table. Updated block diagram and the SS pin description. 10 UCC15701/2 UCC25701/2 UCC35701/2 ...
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PACKAGING INFORMATION Orderable Device (1) Package Type Package Status UCC15701J OBSOLETE CDIP UCC15701L OBSOLETE LCCC UCC25701D ACTIVE SOIC UCC25701DG4 ACTIVE SOIC UCC25701DTR ACTIVE SOIC UCC25701DTRG4 ACTIVE SOIC UCC25701N ACTIVE PDIP UCC25701NG4 ACTIVE PDIP UCC25701PW ACTIVE TSSOP UCC25701PWG4 ACTIVE TSSOP ...
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... ACTIVE TSSOP UCC25702PWG4 ACTIVE TSSOP UCC25702PWTR ACTIVE TSSOP UCC25702PWTRG4 ACTIVE TSSOP UCC35701D ACTIVE SOIC UCC35701DG4 ACTIVE SOIC UCC35701DTR ACTIVE SOIC UCC35701DTRG4 ACTIVE SOIC UCC35701N ACTIVE PDIP UCC35701NG4 ACTIVE PDIP UCC35701PW ACTIVE TSSOP UCC35701PWG4 ACTIVE TSSOP UCC35701Q OBSOLETE UCC35701QTR OBSOLETE UCC35702D ACTIVE ...
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Orderable Device (1) Package Type Package Status UCC35702PWG4 ACTIVE TSSOP (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 ...
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Military - QML certified for Military and Defense Applications PACKAGE OPTION ADDENDUM Addendum-Page 4 28-Aug-2010 ...
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... TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Type Drawing UCC25701DTR SOIC UCC25701PWTR TSSOP PW UCC25702DTR SOIC UCC25702PWTR TSSOP PW UCC35701DTR SOIC PACKAGE MATERIALS INFORMATION Pins SPQ Reel Reel Diameter Width (mm) W1 (mm 2500 330.0 16.4 14 2000 330.0 12 2500 330.0 16 ...
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... Device Package Type UCC25701DTR SOIC UCC25701PWTR TSSOP UCC25702DTR SOIC UCC25702PWTR TSSOP UCC35701DTR SOIC PACKAGE MATERIALS INFORMATION Package Drawing Pins SPQ Length (mm 2500 PW 14 2000 D 14 2500 PW 14 2000 D 14 2500 Pack Materials-Page 2 30-Jul-2010 Width (mm) Height (mm) 333 ...
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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 ...