Trip le -Ou t p u t P o w e r-S u p p ly
Co n t ro lle r fo r No t e b o o k Co m p u t e rs
MAX782
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 < I < 25mA
L
4.5
3.6
5.5
4.2
4.7
3.36
3.2
75
V
V
VL Fault Lockout Voltage
VL/FB5 Switchover Voltage
REF Output Voltage
Falling edge, hysteresis = 1%
Rising edge of FB5, hysteresis = 1%
No external load (Note 2)
Falling edge
4.2
V
3.24
2.4
V
REF Fault Lockout Voltage
REF Load Regulation
V
0mA < I < 5mA
L
30
70
mV
D1 = D2 = D3 = ON3 = ON5 = DA0 = DA1 = DB0 =
DB1 = 0V, V+ = 30V
V+ Standby Current
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
30
8.6
60
mW
µA
V+ Off Current
FB5 = CS5 = 5.25V, VL switched over to FB5
COMPARATORS
D1-D3 Trip Voltage
Falling edge, hysteresis = 1%
D1 = D2 = D3 = 0V to 5V
VH = 15V, Q1-Q3 forced to 2.5V
VH = 15V, Q1-Q3 forced to 2.5V
ISOURCE = 5µA, VH = 3V
1.61
1.69
±100
30
V
nA
µA
µA
V
D1-D3 Input Current
Q1-Q3 Source Current
Q1-Q3 Sink Current
Q1-Q3 Output High Voltage
Q1-Q3 Output Low Voltage
Quiescent VH Current
12
20
200
500
1000
VH-0.5
ISINK = 20µA, VH = 3V
0.4
10
V
VH = 18V, D1 = D2 = D3 = 5V, no external load
6
µA
OSCILLATOR AND INPUTS/OUTPUTS
SYNC = 3.3V
270
170
200
200
300
200
330
230
Oscillator Frequency
kHz
SYNC = 0V or 5V
SYNC High Pulse Width
SYNC Low Pulse Width
SYNC Rise/Fall Time
ns
ns
Not tested
200
350
ns
Oscillator SYNC Range
240
89
kHz
SYNC = 3.3V
92
95
Maximum Duty Cycle
Input Low Voltage
Input High Voltage
%
V
V
SYNC = 0V or 5V
92
ON3, ON5, DA0, DA1, DB0, DB1, SYNC
ON3, ON5, DA0, DA1, DB0, DB1
SYNC
0.8
±1
2.4
VL-0.5
ON3, ON5, DA0, DA1, DB0, DB1, VIN = 0V or 5V
Input Current
µA
A
DL3/DL5 Sink/Source Current
DH3/DH5 Sink/Source Current
DL3/DL5 On Resistance
DH3/DH5 On Resistance
DL3, DL5 forced to 2V
1
1
BST3-LX3 = BST5-LX5 = 4.5V, DH3, DH5 forced to 2V
High or low
A
7
7
Ω
High or low, BST3-LX3 = BST5-LX5 = 4.5V
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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3
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
