 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| UTC 3521 PWM CONTROLLER WITH SUPERVISORY CIRCUIT FOR SWITCHING POWER SUPPLY DESCRIPTION UTC 3521 PWM controller is designed for switching mode power supply for PCs etc. It provides all the functions similar to combinations of industrial 494 plus 3510 circuits. CMOS IC FEATURES * Over-voltage protection for 3.3V, 5V and 12V with delay * Under-voltage detection for 3.3V, 5V and 12V with delay * Remote ON/OFF function * Power good circuitry for PCs. DIP-16 *Pb-free plating product number: 3521L PIN CONFIGURATION V33 V5 V12 PT GND CT C1 C2 1 2 3 4 5 6 7 8 UTC 3521 16 15 14 13 12 11 10 9 VADJ OPNEGIN OPOUT VCC DET PG TPG REM PIN DESCRIPTION PIN NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 PIN NAME V33 V5 V12 PT GND CT C1 C2 REM TPG PG DET VCC OPOUT OPNEGIN VADJ TYPE I I I I P O O I O I P O I I FUNCTIONS OVP/UVP INPUT FOR 3.3V OVP/UVP INPUT FOR 5V OVP/UVP INPUT FOR 12V ADDITIONAL OVP PROTECTION GROUND CAP FOR OSCIILATION FREQUENCY OUTPUT 1 OUTPUT 2 REMOTE ON/OFF PIN. POWER GOOD DELAY TIME SETTING POWER GOOD SIGNAL OUT. POWER GOOD SIGNAL DETECTION INPUT SUPPLY VOLTAGE FOR IC OP AMP OUTPUT OP AMP NEGATIVE INPUT VOLTAGE ADJUST PIN UTC UNISONIC TECHNOLOGIES CO., LTD. 1 QW-R502-034,A www.unisonic.com.tw UTC 3521 BLOCK DIAGRAM (1) V33 (2) V5 (3) V12 UV + UV + UV + UVP 250ms delay IN OV + OV + OV + OV + CLR OUT S OVP R QN Q CMOS IC 1.25V (4) PT 0.625V + QOUT (9) REM 36mS Delay 4.5mS Delay REMONF TPG 4k (10) REMON PG (11) (12) DET 0.625V + (6) CT ERROR AMP OSC CLR PWM CONTROL PWMCMP + C1 D Q C QN (7) (16) VADJ (15) OPNEGIN + 2.45V 0.4V C2 (8) (14) OPOUT + DETCMP DEAD TIME CONTROLER ABSOLUTE MAXIMUM RATINGS (Vcc=5.5V, unless otherwise noted.) PARAMETER Supply Voltage Drain output voltage Drain output current Power Dissipation Operating Temperature Storage Temperature SYMBOL VCC Vcc1, Vcc2 Icc1, Icc2 PD Topr Tstg RATINGS 5.5 5.5 200 200 -10 ~ +70 -65 ~ +150 UNIT V V mA mW UTC UNISONIC TECHNOLOGIES CO., LTD. 2 QW-R502-034,A www.unisonic.com.tw UTC 3521 ELECTRICAL CHARACTERISTICS (Ta=25 , VCC =5V, unless otherwise noted.) PARAMETER DEAD TIME CONTROL SECTION Input Threshold Voltage ERROR AMP SECTION Close Loop Voltage Gain Cross Over Point Opneg Bias Voltage OUTPUT SECTION Output Saturation Voltage Drain Off-State Current Rising Time Falling Time PROTECTION SECTION Over Voltage Protection (OVP) SYMBOL TEST CONDITIONS ZERO DUTY CYCLE MAX. DUTY CYCLE 0.5V ~ 3.5V 0dB OPNEG OPEN Vdssat Idoff Tr Tf V33 V5 V12 PT V33 V5 V12 PT Td,uvp Vremh Vreml Vremo Trem Toff Vdet Rpup.pg Rpg Ichg.tpg Td.pg Vsat.pg Icc Fosc Fosc/T CT=2200P CT=2200P 50 2 Id=200mA Vcc=Vd=Vs=0V MIN TYP 3.0 0.1 65 320 2.45 1.1 2 100 50 3.8 5.8 4.41 1.2 1.78 2.70 2.11 0.55 100 2.0 2.0 30 3.5 0.55 0.5 C=2.2 F Ipg=10mA 100 4.1 6.2 4.64 1.25 1.98 3.00 2.37 0.62 250 CMOS IC MAX 3.3 UNIT Vthdt V 2.38 2.52 1.3 10 200 200 4.3 6.6 4.90 1.3 2.18 3.30 2.63 0.68 500 dB KHz V V A ns ns V Under Voltage Protection (UVP) V V ms V V V ms ms V K K A ms V mA KHz % UVP Disable Voltage UVP Delay Time REMOTE ON/OFF SECTION REM High Input Voltage REM Low Input Voltage REM Pull High Voltage REM Delay Time REM Off Delay Time POWER GOOD SECTION Detecting Input Voltage PG Output Pull-up Resistor PG Output Load Resistor Charging Current For TPG PG Delay Time Output Saturation Voltage TOTAL DEVICE Standby Supply Current OSCILLATION SECTION Oscillation Frequency Frequency Change With TEMP. 36 4.5 0.62 4 1 30 250 0.2 10 0.8 5.25 42 5.5 0.68 2 500 0.4 20 60 UTC UNISONIC TECHNOLOGIES CO., LTD. 3 QW-R502-034,A www.unisonic.com.tw UTC 3521 CMOS IC UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UTC UNISONIC TECHNOLOGIES CO., LTD. 4 QW-R502-034,A www.unisonic.com.tw |
Price & Availability of UTC3521
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |