Rainbow Electronics MAX1635 - Manual (Page 3)

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