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| YOUDA INTEGRATED CIRCUIT YD34063 DC TO DC CONVERTER CONTROLLER--YD34063 DESCRIPTION The YD34063 is a monolithic regulator subsystem intended for use as DC to DC converter: This device contains a temperature compensated band-gap reference, a duty-cycle control oscillator, driver and high current output switch. FEATURES *Operation From 3.0V to 40V *Short Circuit Current Limiting *Low Standby Current *Output Switch Current Of 1.5A Without External Transistors *Frequency Of Operation From 100Hz to 100kHz *Step-up, Step-down or Inverting Switch Regulators BLOCK DIAGRAM E 1 T1 2 A 3 4 C IS CT OSCILLATOR + COMP. T2 Q S R D 7 8 6 5 B 1.25Vref WuXi YouDa Electronics Co., Ltd Add: No.5 Xijin Road, National Hi-Tech Industrial Development Zone, Wuxi Jiangsu China Tel: 86-510-85205117 86-510-85205106 Fax: 86-510-85205110 Website: www.e-youda.com SHENZHEN OFFICE Tel 86-755-83740369 Fax 86-755-83741418 Ver 5.0 1 of 4 2006-7-10 YOUDA INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS PARAMETER Supply Voltage Comparator Input Voltage Range Switch Collector Voltage Switch Emitter Voltage Switch Collector to Emitter Voltage Driver Collector Voltage Driver Collector Current Switch Current Power Dissipation Operating Junction Temperature Operating Temperature Storage Temperature (Tamb=25) VALUE 40 -0.3 +40 40 40 40 40 -55100 1.5 1.25 150 070 -65150 YD34063 SYMBOL Vcc Vi(comp) Vc(sw) Ve(sw) Vce(sw) Vc(dr) Ic Isw PD Tj Tamb Tstg UNIT V V V V V V mA A W ELECTRICAL CHARACTERISTICS PARAMETER Oscillator Frequency Charging Current Discharging Current Discharge to Charge Current Ratio Current Limit Sense Voltage Output Switch Saturation Voltage Saturation Voltage DC Current Gain Collector OFF Current Threshold Voltage Threshold Voltage Line Regulation Input Bias Current Vce(sat) Vce(sat) hFE Ic(off) Vth Reg IIB fOSC Ichq Idischg K VIPK SYMBOL (Tamb=070, Vcc=5.0V, Unless otherwise specified) MIN TYP MAX UNIT TEST CONDITIONS Vpin=0V, CT=1.0 Vpin5=5 to 40V Vpin5=5 to 40V V7=Vcc 24 24 140 5.2 250 33 35 190 6.1 300 42 42 260 7.5 350 kHz A A mV Isw=1.0A Vc(driver)=Vc(sw) Isw=1.0A Vc(driver)=50mA Isw=1.0A, Vce=5.0V Vce=40.0V Tamb=25 Tamb=070 Vcc=3.040V Vin=0V 2 of 4 1.225 1.21 50 1.0 0.45 120 0.01 1.25 1.3 0.7 V V 100 1.275 1.29 A V mV nA 1.4 -40 5.0 -400 WuXi YouDa Electronics Co., Ltd Website: www.e-youda.com YOUDA INTEGRATED CIRCUIT APPLICATION CIRCUIT YD34063 WuXi YouDa Electronics Co., Ltd 3 of 4 Website: www.e-youda.com YOUDA INTEGRATED CIRCUIT YD34063 OUTLINE DRAWING WuXi YouDa Electronics Co., Ltd 4 of 4 Website: www.e-youda.com |
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