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BQ24721CRHBR Texas Instruments Smart Battery Charger with SMBus and System Power Selector, Softer Turn-On 32-VQFN -40 to 85 ri Buy
BQ24721CRHBTG4 Texas Instruments Smart Battery Charger with SMBus and System Power Selector, Softer Turn-On 32-VQFN -40 to 85 ri Buy
BQ24721CRHBT Texas Instruments Smart Battery Charger with SMBus and System Power Selector, Softer Turn-On 32-VQFN -40 to 85 ri Buy

turn 07d471k

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Abstract: design. 4.2 Acceleration Start For LED lighting application, the lower turn on delay time is , , after VCC voltage reaches turn on threshold, AP1682 AP1682 controls the power converter operating at the max , turn ratio design should also be revised by considering the primary switch and secondary diode , the delay time Td_off includes IC internal delay time, about 60ns, and primary switch turn off delay , (14), the maximum turn ratio should be Nt < 1.25 ⋅ 2 ⋅ Vin _ rms _ min ⋅ ηt Vo + Vd ... BCD Semiconductor
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17 pages,
1207.49 Kb

AP1682 TEXT
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Abstract: ‹… Vcs ⋅η tr 2 ⋅ Tsw ⋅ Rcs (4) As to AP1681 AP1681 control scheme, the turn off voltage Figure , voltage. From formula (4), IO can be adjusted accordingly by changing TONS/TSW if the turn ratio Nt and , start-up, after VCC voltage is higher than turn on threshold, DIM pin voltage is pulled to zero by , primary peak current control and OCP. The CS pin turn off voltage threshold is 0.5V for current loop , could be reached by adjusting fSW, turn ratio and VBUS. Usually fSW and VBUS are determined firstly ... BCD Semiconductor
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14 pages,
1001.87 Kb

AP1681 TEXT
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