MAX1632CAI datasheet(3/29 Pages) MAXIM

Part #	MAX1632CAI

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

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Manufacturer	MAXIM [Maxim Integrated Products]

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Multi-Output, Low-Noise Power-Supply

Controllers for Notebook Computers

_______________________________________________________________________________________

3

ELECTRICAL CHARACTERISTICS (continued)

(V+ = 15V, both PWMs on, SYNC = VL, VL load = 0mA, REF load = 0mA,

SKIP = 0V, TA = TMIN to TMAX, unless otherwise noted.

Typical values are at TA = +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)

VDD < 13V or SECFB < 2.44V

V

18

20

µs

1

Falling edge (MAX1631/MAX1634)

DL Pulse Width

Falling edge (Note 3)

VDD Shunt Threshold

V

2.44

2.60

V

13

14

CONDITIONS

VDD Regulation Threshold

SECFB Regulation Threshold

VDD = 20V (Note 3)

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

µA

30

VDD Leakage Current

mA

10

VDD Shunt Sink Current

ns

200

ns

200

SYNC Input High Pulse Width

SYNC Input Low Pulse Width

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

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

12OUT forced to 11V, VDD = 13V

µA

50

100

mA

150

12OUT Current Limit

Quiescent VDD 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 < ILOAD < 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

410

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

550

V+ Operating Supply Current

V+ Standby Supply Current

0µA < ILOAD < 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 < ILOAD < 5mA

mV

100.0

REF Load Regulation

FLYBACK CONTROLLER

12V LINEAR REGULATOR (Note 3)

INTERNAL REGULATOR AND REFERENCE

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