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LT3462ES6 Datasheet(PDF) 6 Page - Linear Technology |
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LT3462ES6 Datasheet(HTML) 6 Page - Linear Technology |
6 / 8 page LT3462/LT3462A 3462af 6 TYPICAL APPLICATIO S Li+ to –8V Supply –12V Efficiency LOAD CURRENT (mA) 0 80 75 70 65 60 55 50 3462 TA02b 10 520 15 25 35 30 TA = 25°C VIN = 3.3V 3.3V to –12V with Soft-Start Circuit VIN 3.3V L1 47 µH L2 47 µH R1 267k R2 27.4k C3 2.2 µF CS1 100nF 22nF C4 15pF C1 4.7 µF C2 1 µF VOUT –12V 30mA VIN SW FB SDREF GND LT3462 C1: TAIYO YUDEN X5R JMK212BJ475MG C2: TAIYO YUDEN X5R EMK212BJ105MG C3: TAIYO YUDEN EMK316BJ225 L1, L2: MURATA LQH32CN470 3462 TA02a OFF M1 D VIN 2.7V TO 4.2V L1A 22 µH L1B 22 µH R1 267k R2 42.2k C3 4.7 µF C4 15pF C1 4.7 µF C2 1 µF VOUT –8V VIN SW FB SDREF GND LT3462 C1: TAIYO YUDEN X5R JMK212BJ475MG C2: TAIYO YUDEN X5R EMK212BJ105MG C3: TAIYO YUDEN LMK316BJ475 L1: SUMIDA CLS62-220 OR 2X MURATA LQH32CN330 3462 TA03a D LOAD CURRENT (mA) 0 3462 TA03b 20 30 10 40 50 80 75 70 65 60 55 50 TA = 25°C VIN = 3.3V –8V Efficiency 2ms/DIV IIN 100mA/DIV OFF VOUT 10V/DIV 3462 TA02c VOUT Reaches –12V in 750µs; Input Current Peaks at 300mA without CS1 VOUT Reaches –12V in 7.5ms; Input Current Peaks at 125mA with CS1 = 100nF 2ms/DIV IIN 50mA/DIV OFF VOUT 10V/DIV 3462 TA02d |
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