MAX786S 查看數據表（PDF） - Maxim Integrated
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MAX786S Datasheet PDF : 20 Pages
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Dual-Output Power-Supply
Controller for Notebook Computers
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.)
PARAMETER
CONDITIONS
Q1, Q2 Source Current
Q1, Q2 Sink Current
Q1, Q2 Output High Voltage
Q1, Q2 Output Low Voltage
Quiescent VH Current
VH = 15V, VOUT = 2.5V
VH = 15V, VOUT = 2.5V
ISOURCE = 5µA, VH = 3V
ISINK = 20µA, VH = 3V
VH = 18V, D1 = D2 = 5V, no external load
OSCILLATOR AND INPUTS/OUTPUTS
Oscillator Frequency
SYNC = 3.3V
SYNC = 0V, 5V
SYNC High Pulse Width
SYNC Low Pulse Width
SYNC Rise/Fall Time
Not tested
Oscillator SYNC Range
Maximum Duty Cycle
SYNC = 3.3V
SYNC = 0V or 5V
Input Low Voltage
SHDN, ON3, ON5, SYNC
Input High Voltage
SHDN, ON3, ON5
SYNC
Input Current
DL3/DL5 Sink/Source Current
DH3/DH5 Sink/Source Current
DL3/DL5 On-Resistance
SHDN, ON3, ON5 VIN = 0V, 5V
VOUT = 2V
BST3-LX3 = BST5-LX5 = 4.5V, VOUT = 2V
High or low
DH3/DH5 On-Resistance
High or low, BST3-LX3 = BST5-LX5 = 4.5V
MIN TYP
12
20
200
500
VH - 0 .5
4
MAX
30
1000
0.4
10
UNITS
µA
µA
V
V
µA
270
300
330
kHz
170
200
230
200
ns
200
ns
200
ns
240
350
kHz
89
92
%
92
95
0.8
V
2.4
V
VL - 0 .5
±1
µA
1
A
1
A
7
Ω
7
Ω
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.
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