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M62291GP 数据表(PDF) 3 Page - Mitsubishi Electric Semiconductor |
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M62291GP 数据表(HTML) 3 Page - Mitsubishi Electric Semiconductor |
3 / 3 page ( 3 / ) 1. Application Circuit (5.0V Output DC-DC Converter; M62291GP) Current Limit Detction: When the voltage drop between 4pin and 5pin becomes 140mV or more, Current Limit Detection circuit starts to operate. In the example of application (fig.1), the current is limited to 1.5A. 2 1 3 4 5 IN Vcc CLM Collector GND + + M62291 VIN (12V) VOUT(5.0V,1A) 100µF 100µF 0.09ohm RCLM 1Kohm 1Kohm 150µH Fig.1 Example of application circuit of M62270GP 2. THE EXPRESSION OF CIRCUIT CONSTANTS • VF : Forward voltage drop of an external diode. • Vsat : Output saturation voltage of an external switching transistor. • ∆Io :Set to 1/3 to 1/5 of maximum output current • Choose an external transistor, diode and inductor with peak current rating greater than "Ipk". CONSTANTS TON TOFF (TON+TOFF)MAX TOFF(MIN) TON(MAX) L(MIN) VO+VF VIN - VCE(sat) - VO 1 fosc - TOFF ∆Io ( VIN - VCE(sat) - VO ) TON(MAX) 1 fosc fosc:110KHz(Vcc=5V) EXPRESSIONS Ipk RCLM ( TON + TOFF ) / TON TOFF 1 + ( ) Io + 1 2 ∆Io 0.15 Ipk ∆VCLM:150mV(Vcc=5V) M62291GP MITSUBISHI <Standard Linear IC> 5-PIN SOT-23 5.0V SYSTEM FIXED OUTPUT VOLTAGE DC-DC CONVERTER Jan. 2000 3 |
类似零件编号 - M62291GP |
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类似说明 - M62291GP |
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