中文
EnglishStep-up DC-DC Converter CXSU6342,A low ripple, high efficiency step-up DC/DC converter can be constructed of CXSU6342AxxX with only three external components.
目录
CXSU6342 Series is a PWM Step-up DC/DC converter IC with low supply current by CMOS process. High frequency noise that occurs during switching is reduced by using advanced circuit designed, output voltage is programmable in 0.1V steps between 2.0~5.0V and maximum frequency is 100KHz(Typ.). A low ripple, high efficiency step-up DC/DC converter can be constructed of CXSU6342AxxX with only three external components. Also available is a CE(chip enable) function that reduce power dissipation During shut-down mode., and an independent Vdd pin function (separated power supply and voltage detect pins) for fly-back circuits.An inner soft-start circuit limits current surges from input power supply at start up and the reliability of the chip is improved. CXSU6342XxxX is suitable for use with battery-powered instrummets with low noise and low supply current.
• Small number of external components: only an inductor, a diode and a capacitor；</span>
• Low ripple and low noise；</span>
• Operating voltage range：0.9V~6.5V；</span>
• Output voltage range：2.0V~5.0V(step 0.1V)；
• Output voltage accuracy：±2.5%；</span>
• Output Current：if Vin=3.0V and Vout=3.3V，then Iout=350mA；</span>
• Low start voltage：≤0.9V(at Iout=1mA)；</span>
• Maximum oscillator frequency： 100KHz(Typ.)；</span>
• High Efficiency：87%(Type)；</span>
• Slow-Start Time ：15mS(Type)；</span>
• PACKAGE：SOT-23，SOT-89
•Power source for battery-powered equipment；</span>
• Power source for wireless mouse, wireless keyboard, toys, cameras, camcorders, VCRs, PDAs, and hand-held communication equipment；</span>
• Power source for appliances which require higher cell voltage than that of batteries used in the appliances。</span>
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Step-Up DC/DC Converter（升压DC/DC转换器） | ||||||||
Part | MODE | VIN | VOUT | Accu | FOSC | Eff. | Application | Package |
PFM | 0.9-6.5V | 3.0-5.0V | ±2.5% | 100K | 85% | ①②③④⑤⑥⑧</span> | SOT23-3/SOT23-5/SOT89-3 | |
PWM | 0.9-6.5V | 3.0-5.0V | ±2.5% | 100K | 87% | ①②③④⑤⑥⑧</span> | SOT23-3/SOT23-5/SOT89-3 | |
PFM | 0.9-6.5V | 2.7-5.6V | ±2.5% | 180K | 85% | ①②③④⑤⑥⑦</span> | SOT23-5/SOT89-3/SOT23-3/TO92 | |
PFM/PWM | 0.9-6.5V | <20V | ±2% | 300K | 88% | ⑥⑦⑨⑩ | SOT23-5 | |
PFM | 0.9-6.5V | 1.8-6.0V | ±2% | 150K/ | 85% | ①②③④⑤⑥ | SOT89-3//SOT23-5/SOT23-3 | |
PFM/PWM | 0.9-6.5V | <20V | ±2% | 300K | 88% | ⑥⑦⑨⑩ | SOT23-5 | |
CHARGE | 2.7-5.5V | 5.0V | ±3% | 650K | 81% | ①②④⑦⑧</span> | SOT23-6 | |
PFM/PWM | 0.9-6.5V | <20V | ±2% | 1M | 85% | ⑥⑦⑨⑩ | SOT23-5/ | |
PFM/PWM | 0.9-6.5V | <20V | ±2% | 1M | 85% | ⑥⑦⑨⑩ | SOT23-5/SOT89-5 | |
PFM/PWM | 2.5-5.0V | <12V | ±2% | 1M | 85% | ⑥⑦⑨⑩ | SOT23-6 | |
PFM/PWM | 2.5-5.0V | <20V | ±2% | 1M | 88% | ①⑥⑦⑨⑩</span> | SOT23-6 | |
PFM/PWM | 0.9-6.5V | <20V | ±2% | 1.2M | 85% | ⑥⑦⑨⑩ | SOT23-6 | |
PFM/PWM, Synchronous | 2.9-4.4V | <5.5V | ±2% | 1M | 94% | ①②④⑦ | ESOP8 | |
PFM, Synchronous | 0.9-6.5V | 1.8-6.0V | ±2% | 330K | 85% | ①②③④⑤⑥ | SOT89-3/ SOT23-5/SOT23-3 | |
PFM, Synchronous | 0.9-5.0V | 1.8-5.0V | ± 2% | 400K | 95% | ①②④⑥⑦</span> | SOT89/SOT23/SOT23-5/TO92 | |
PFM, Synchronous | 0.9-6.0V | 1.8-6.0V | ±2% | 140K | 81% | ①②③④⑤⑥ | SOT89/SOT23-3 | |
Applications： ①Battery powered equipment②Wireless mouse, Wireless keyboard③Toys④Camera, Video camera⑤VCR⑥PDA⑦LED Lighting⑧Wireless communication equipment⑨MID⑩Audio equipment | ||||||||
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