MAX783C/D Ver la hoja de datos (PDF) - Maxim Integrated
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MAX783C/D Datasheet PDF : 28 Pages
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Triple-Output Power-Supply Controller
for Notebook Computers
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 15V, GND = PGND = 0V, IVL = IREF = 0mA, S—H—D—N– = ON3 = ON5 = 5V, other digital input levels are 0V or +5V,
TA = TMIN to TMAX, unless otherwise noted.)
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
DL3/DL5 Sink/Source Current
DH3/DH5 Sink/Source Current
DL3/DL5 On-Resistance
VOUT = 2V
BST3-LX3 = BST5-LX5 = 4.5V, VOUT = 2V
High or low
1
A
1
A
7
Ω
DH3/DH5 On-Resistance
High or low, BST3-LX3 = BST5-LX5 = 4.5V
7
Ω
Note 1: Output current is further limited by maximum allowable package power dissipation.
Note 2: Because the reference uses VL as its supply, the REF line regulation error is insignificant.
Note 3: 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.
__________________________________________Typical Operating Characteristics
(Circuit of Figure 1, Transpower TTI5902 transformer, TA = +25°C, unless otherwise noted.)
EFFICIENCY vs.
+5V OUTPUT CURRENT
100
V+ = 6V
90
V+ = 15V
80
EFFICIENCY vs.
+3.3V OUTPUT CURRENT
100
V+ = 6V
90
V+ = 15V
80
MAXIMUM +15V VDD OUTPUT CURRENT vs.
SUPPLY VOLTAGE
500
VDD > +13V
+3.3V REGULATING
400
+3.3V LOAD = 0A
300
70
70
N1-N4 = IRF7101
N1-N4 = IRF7101
200
ON3 = LOW
ON3 = ON5 = HIGH
60
F = 200kHz
60
F = 200kHz
100
+3.3V LOAD = 3A
50
1m
10m
100m
1
10
+5V OUTPUT CURRENT (A)
50
1m
10m
100m
1
10
+3.3V OUTPUT CURRENT (A)
0
0
5
10
15
20
SUPPLY VOLTAGE (V)
QUIESCENT SUPPLY CURRENT vs.
SUPPLY VOLTAGE
14
STANDBY SUPPLY CURRENT vs.
SUPPLY VOLTAGE
2.5
13
ON3 = ON5 = HIGH
2
1
2.0
1.5
ON3 = ON5 = 0V
1.0
0.5
0
0
6
12
18
24
30
SUPPLY VOLTAGE (V)
0
0
6
12
18
24
30
SUPPLY VOLTAGE (V)
4 _______________________________________________________________________________________
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