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XC9504 Datasheet(PDF) 7 Page - Torex Semiconductor |
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XC9504 Datasheet(HTML) 7 Page - Torex Semiconductor |
7 / 50 page Notes 1) 2) 3) 4) Typical Application Circuit XC9504B Series XC9504 Series 2ch. Step-up / Inverting DC/DC Controller ICs Although the IC's step-up operations start from a VDD of 0.8V, the output voltage and switching frequency are stabilized at VDD ≥ 2.0V. Therefore, a VDD of more than 2.0V is recommended when VDD is supplied from VIN or other power sources. Although the IC's switching operations start from a VIN of 0.9V, the IC's power supply pin (VDD) and output voltage monitor pin (FB1) should be connected to VOUT1. With operations from VIN=0.9V, the 2nd channel's (output 2) EN2 pin should be set to chip disable. Once ouput voltage VOUT1 is more than 2.0V, the EN2 pin should be set to chip enable. Please be careful not to exceed the breakdown voltage level of the peripheral parts. EFFI={ [ (Output voltage) x (Output current) ] / [ (Input voltage) x (Input Current) ] } x 100 L1 Tr2 CIN Tr1 L2 VPWM1 VPW M2 1 EXT1 2 VDD 3 FB1 FB2 8 GND 9 EXT2/ 10 4 PWM1 PW M2 7 5 EN1 EN2 6 VEN2 VEN1 CDD SD2 RFB11 RFB12 CFB1 VOUT1 SD1 CL1 RFB21 CFB21 VOUT2 CL2 RFB22 VIN 7 |
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