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MAX786EVKIT-SO Datasheet(PDF) 3 Page - Maxim Integrated Products |
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MAX786EVKIT-SO Datasheet(HTML) 3 Page - Maxim Integrated Products |
3 / 20 page Dual-Output Power-Supply Controller for Notebook Computers _________________________________________________________________________________________________ 3 Note 1: Since the reference uses VL as its supply, its V+ line regulation error is insignificant. Note 2: The main switching outputs track the reference voltage. Loading the reference reduces the main outputs slightly according to the closed-loop gain (AVCL) and the reference voltage load-regulation error. AVCL for the +3.3V supply is unity gain. AVCL for the +5V supply is 1.54. PARAMETER CONDITIONS MIN TYP MAX UNITS Q1, Q2 Source Current VH = 15V, VOUT = 2.5V 12 20 30 µA Q1, Q2 Sink Current VH = 15V, VOUT = 2.5V 200 500 1000 µA Q1, Q2 Output High Voltage ISOURCE = 5µA, VH = 3V VH -0 .5 V Q1, Q2 Output Low Voltage ISINK = 20µA, VH = 3V 0.4 V Quiescent VH Current VH = 18V, D1 = D2 = 5V, no external load 4 10 µA OSCILLATOR AND INPUTS/OUTPUTS Oscillator Frequency SYNC = 3.3V 270 300 330 kHz SYNC = 0V, 5V 170 200 230 SYNC High Pulse Width 200 ns SYNC Low Pulse Width 200 ns SYNC Rise/Fall Time Not tested 200 ns Oscillator SYNC Range 240 350 kHz Maximum Duty Cycle SYNC = 3.3V 89 92 % SYNC = 0V or 5V 92 95 Input Low Voltage SHDN, ON3, ON5, SYNC 0.8 V Input High Voltage SHDN, ON3, ON5 2.4 V SYNC VL -0 .5 Input Current SHDN, ON3, ON5 VIN = 0V, 5V ±1 µA DL3/DL5 Sink/Source Current VOUT = 2V 1 A DH3/DH5 Sink/Source Current BST3-LX3 = BST5-LX5 = 4.5V, VOUT = 2V 1 A DL3/DL5 On-Resistance High or low 7 Ω DH3/DH5 On-Resistance High or low, BST3-LX3 = BST5-LX5 = 4.5V 7 Ω ELECTRICAL CHARACTERISTICS (continued) (V+ = 15V, GND = PGND = 0V, IVL = IREF = 0mA, SHDN = ON3 = ON5 = 5V, other digital input levels are 0V or +5V, TA = TMIN to TMAX, unless otherwise noted.) |
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