Multi-Output, Low-Noise Power-Supply
Controllers for Notebook Computers
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 15V, both PWMs on, SYNC = VL, VL load = 0mA, REF load = 0mA,
SKIP
= 0V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.
Typical values are at T
A
= +25°C.)
PARAMETER
SYNC Input High Pulse Width
SYNC Input Low Pulse Width
SYNC Rise/Fall Time
SYNC Input Frequency Range
Current-Sense Input Leakage Current
FLYBACK CONTROLLER
V
DD
Regulation Threshold
SECFB Regulation Threshold
DL Pulse Width
V
DD
Shunt Threshold
V
DD
Shunt Sink Current
V
DD
Leakage Current
12V LINEAR REGULATOR (Note 3)
12OUT Output Voltage
12OUT Current Limit
Quiescent V
DD
Current
13V < V
DD
< 18V, 0mA < I
LOAD
< 120mA
12OUT forced to 11V, V
DD
= 13V
V
DD
= 18V, run mode, no 12OUT load
SHDN
= V+, RUN/ON3 = TIME/ON5 = 0V,
5.3V < V+ < 30V, 0mA < I
LOAD
< 50mA
Falling edge, hysteresis = 1%
Rising edge of CSL5, hysteresis = 1%
No external load (Note 5)
0µA < I
LOAD
< 50µA
0mA < I
LOAD
< 5mA
10
Falling edge
VL switched over to CSL5, 5V SMPS on
V+ = 5.5V to 30V, both SMPSs off,
includes current into
SHDN
V+ = 4.2V to 5.5V, both SMPSs off,
includes current into
SHDN
V+ = 4V to 24V,
SHDN
= 0V
Both SMPSs enabled, FB3 = FB5 = 0V, (Note 3)
CSL3 = CSH3 = 3.5V,
MAX1631/
CSL5 = CSH5 = 5.3V
MAX1634
1.8
5
30
50
4
2.5
1.5
2.4
50
60
200
10
4
4
mW
11.65
12.1
150
50
100
12.50
V
mA
µA
Falling edge (Note 3)
Falling edge (MAX1631/MAX1634)
V
DD
< 13V or SECFB < 2.44V
Rising edge, hysteresis = 1% (Note 3)
V
DD
= 20V (Note 3)
V
DD
= 5V, off mode (Notes 3, 4)
18
10
30
13
2.44
1
20
14
2.60
V
V
µs
V
mA
µA
V+ = VL = 0V,
CSL3 = CSH3 = CSL5 = CSH5 = 5.5V
Not tested
Not tested
Not tested
240
0.01
CONDITIONS
MIN
200
200
200
350
10
TYP
MAX
UNITS
ns
ns
ns
kHz
µA
MAX1630–MAX1635
INTERNAL REGULATOR AND REFERENCE
VL Output Voltage
VL Undervoltage Lockout
Fault Threshold
VL Switchover Threshold
REF Output Voltage
REF Load Regulation
REF Sink Current
REF Fault Lockout Voltage
V+ Operating Supply Current
V+ Standby Supply Current
V+ Standby Supply Current
in Dropout
V+ Shutdown Supply Current
Quiescent Power Consumption
4.7
3.5
4.2
2.45
3.6
4.5
2.5
5.1
3.7
4.7
2.55
12.5
100.0
V
V
V
V
mV
µA
V
µA
µA
µA
µA
_______________________________________________________________________________________
3
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
