MAX1901ETJ 查看數據表（PDF） - Maxim Integrated

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MAX1901ETJ

500kHz Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers

Maxim Integrated 

500kHz Multi-Output, Low-Noise Power-Supply

Controllers for Notebook Computers

ELECTRICAL CHARACTERISTICS (continued)

(V+ = 15V, both PWMs on, SYNC = VL, VL load = 0, REF load = 0, SKIP = 0, TA = 0°C to +85°C, unless otherwise noted. Typical

values are at TA = +25°C.)

PARAMETER

Maximum Duty Factor

SYNC Input High-Pulse Width

SYNC Input Low-Pulse Width

SYNC Rise/Fall Time

SYNC Input Frequency Range

CONDITIONS

SYNC = VL

SYNC = 0 (Note 2)

Not tested

Not tested

Not tested

Current-Sense Input Leakage Current

V+ = VL = 0,

CSL3 = CSH3 = CSL5 = CSH5 = 5.5V

FLYBACK CONTROLLER

VDD Regulation Threshold

SECFB Regulation Threshold

DL Pulse Width

VDD Shunt Threshold

VDD Shunt Sink Current

VDD Leakage Current

12V LINEAR REGULATOR (Note 3)

12OUT Output Voltage

12OUT Current Limit

Quiescent VDD Current

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

Falling edge (Note 3)

Falling edge (MAX1901/MAX1904)

VDD < 13V or SECFB < 2.44V

Rising edge, hysteresis = 1% (Note 3)

VDD = 20V (Note 3)

VDD = 5V, off mode (Notes 3, 4)

13V < VDD < 18V, 0 < ILOAD < 120mA

12OUT forced to 11V, VDD = 13V

VDD = 18V, run mode, no 12OUT load

SHDN = V+, RUN/ON3 = TIME/ON5 = 0,

5.4V < V+ < 30V, 0mA < ILOAD < 50mA

Falling edge, hysteresis = 1%

Rising edge of CSL5, hysteresis = 1%

No external load (Note 5)

0 < ILOAD < 50µA

0 < ILOAD < 5mA

Falling edge

VL switched over to CSL5, 5V SMPS on

V+ = 5.5V to 30V, both SMPSs off, includes

current into SHDN

V+ Standby Supply Current in Dropout

V+ Shutdown Supply Current

V+ = 4.2V to 5.5V, both SMPSs off, includes

current into SHDN

V+ = 4.0V to 30V, SHDN = 0

MIN TYP MAX UNITS

95

97

%

96.5

98

200

ns

200

ns

200

ns

400

583

kHz

0.01

10

µA

13

14

V

2.44

2.60

V

0.75

µs

18

20

V

10

mA

30

µA

11.65 12.10 12.50

V

150

mA

50

100

µA

4.7

5.1

V

3.5

3.6

3.7

V

4.2

4.5

4.7

V

2.45

2.5

2.55

V

12.5

mV

100.0

10

µA

1.8

2.4

V

5

50

µA

30

60

µA

50

200

µA

4

10

µA

Quiescent Power Consumption

Both SMPSs enabled,

FB3 = FB5 = 0,

CSL3 = CSH3 = 3.5V,

CSL5 = CSH5 = 5.3V

(Note 3)

MAX1901/MAX1904

2.5

4

mW

1.5

4

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