MAX782 Просмотр технического описания (PDF) - Maxim Integrated
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MAX782 Datasheet PDF : 32 Pages
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Triple-Output Power-Supply
Controller for Notebook Computers
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 15V, GND = PGND = 0V, IVL = IREF = 0mA, ON3 = ON5 = 5V, other digital input levels are 0V or +5V, TA = TMIN to TMAX,
unless otherwise noted.)
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
INTERNAL REGULATOR AND REFERENCE
VL Output Voltage
ON5 = ON3 = 0V, 5.5V < V+ < 30V, 0mA < IL < 25mA
4.5
5.5
V
VL Fault Lockout Voltage
Falling edge, hysteresis = 1%
3.6
4.2
V
VL/FB5 Switchover Voltage
Rising edge of FB5, hysteresis = 1%
4.2
4.7
V
REF Output Voltage
No external load (Note 2)
3.24
3.36
V
REF Fault Lockout Voltage
Falling edge
2.4
3.2
V
REF Load Regulation
0mA < IL < 5mA
30
75
mV
V+ Standby Current
D1 = D2 = D3 = ON3 = ON5 = DA0 = DA1 = DB0 =
DB1 = 0V, V+ = 30V
70
110
µA
Quiescent Power Consumption
(both PWM controllers on)
D1 = D2 = D3 = DA0 = DA1 = DB0 = DB1 = 0V,
FB5 = CS5 = 5.25V, FB3 = CS3 = 3.5V
6.0
8.6 mW
V+ Off Current
FB5 = CS5 = 5.25V, VL switched over to FB5
30
60
µA
COMPARATORS
D1-D3 Trip Voltage
Falling edge, hysteresis = 1%
1.61
1.69
V
D1-D3 Input Current
D1 = D2 = D3 = 0V to 5V
±100 nA
Q1-Q3 Source Current
VH = 15V, Q1-Q3 forced to 2.5V
12
20
30
µA
Q1-Q3 Sink Current
VH = 15V, Q1-Q3 forced to 2.5V
200
500 1000 µA
Q1-Q3 Output High Voltage
Q1-Q3 Output Low Voltage
ISOURCE = 5µA, VH = 3V
ISINK = 20µA, VH = 3V
VH-0.5
V
0.4
V
Quiescent VH Current
VH = 18V, D1 = D2 = D3 = 5V, no external load
6
10
µA
OSCILLATOR AND INPUTS/OUTPUTS
Oscillator Frequency
SYNC = 3.3V
SYNC = 0V or 5V
270
300
330
kHz
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
SYNC = 0V or 5V
89
92
%
92
95
Input Low Voltage
ON3, ON5, DA0, DA1, DB0, DB1, SYNC
0.8
V
Input High Voltage
ON3, ON5, DA0, DA1, DB0, DB1
SYNC
2.4
V
VL-0.5
Input Current
ON3, ON5, DA0, DA1, DB0, DB1, VIN = 0V or 5V
±1
µA
DL3/DL5 Sink/Source Current
DL3, DL5 forced to 2V
1
A
DH3/DH5 Sink/Source Current
BST3-LX3 = BST5-LX5 = 4.5V, DH3, DH5 forced to 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
Note 1: Output current is further limited by maximum allowable package power dissipation.
Note 2: Since the reference uses VL as its supply, V+ line regulation error is insignificant.
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