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L6460 数据表(PDF) 23 Page - STMicroelectronics |
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L6460 数据表(HTML) 23 Page - STMicroelectronics |
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23 / 139 page ![]() L6460 Electrical specifications Doc ID 17713 Rev 1 23/139 VFBREF Synchronous buck regulator feedback reference voltage SelFBRef = ‘00’ 0.776 0.8 0.824 V SelFBRef = ‘01’ (21) 0.97 1 1.03 V SelFBRef = ‘10’ (22) 2.425 2.5 2.575 V SelFBRef = ‘11’ 2.91 3 3.09 V IGPIO_FB GPIO feedback pin current Tjunction = 125°C 0V ≤Feedback ≤ 3V -15 15 µA Vout Output voltage range VSupply = 36V (23) 0.8 30 V Iload Output load current VSupply = 36V 0.002 1.5 A RDSonHS Internal high/low side RDSon Tjunction = 125°C; Iload=1A 0.6 0.8 Ω Vloop Loop voltage accuracy ±3% VREG_UV_f Under voltage falling threshold (24) 84.5 87 89.5 % VREG_UV_r Under voltage rising threshold (24) 90.5 93 95.5 % VREG_UV_hys Under voltage hysteresis 6 % taux_UV Under voltage deglitch filter 5 µs Ilimit Current limit protection 1.6 2.5 A tdeglitch Current limit deglitch time 50 ns tI_lim Current limit response time Normal operating mode (no UV) (11) 480 700 ns tI_limUV Current limit response time in UV condition. UV condition (12) 350 500 ns tr Switching output rise time VSupply = 36V, RLOAD = 422 Ω (25) 530 ns tf Switching output fall time VSupply = 36V, RLOAD = 10 Ω (23) 10 50 ns tdead Crossover dead time 100 ns FREGPWM Operating frequency Fosc/64 kHz Battery charger (Bridge 4) VAUX3_SW Output pin voltage range (DC4x) (26) -1 VSupply V IQ Output leakage current Tjunction = 125°C -100 +100 µA VFBRef Battery charger control loop feedback reference voltage SelFBRef = ‘00’ 1.37 1.412 1.455 V SelFBRef = ‘01’ (8) 1.746 1.8 1.854 V SelFBRef = ‘10’ 2.079 2.143 2.207 V SelFBRef = ‘11’ 2.425 2.5 2.575 V Table 5. Electrical characteristics (continued) Parameter Description Test condition Min Typ Max Unit |
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