MAX1533AETJ データシートの表示（PDF） - Maxim Integrated

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MAX1533AETJ

High-Efficiency, 5x Output, Main Power-Supply Controllers for Notebook Computers

Maxim Integrated 

High-Efficiency, 5x Output, Main Power-Supply

Controllers for Notebook Computers

ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 1, VIN = 12V, both SMPS enabled, VCC = 5V, FSEL = REF, SKIP = GND, VILIM_ = VLDO5, VINA = 15V, VLDOA = 12V,

ILDO5 = ILDO3 = ILDOA = no load, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)

PARAMETER

Line-Regulation Error

Operating Frequency (Note 1)

Maximum Duty Factor (Note 1)

Minimum On-Time

SMPS3 to SMPS5 Phase Shift

CURRENT LIMIT

ILIM_ Adjustment Range

Current-Sense Input Range

SYMBOL

fOSC

DMAX

tON(MIN)

CONDITIONS

Either SMPS, duty cycle = 10% to 90%

FSEL = GND

FSEL = REF

FSEL = VCC

FSEL = GND

FSEL = REF

FSEL = VCC

(Note 3)

SMPS5 starts after SMPS3

CSH_, CSL_

MIN TYP MAX UNITS

1

%

170

200

230

270

300

330

kHz

425

500

575

91

93

91

93

%

91

93

200

ns

40

%

144

Deg

0.5

VREF

V

0

5.5

V

Current-Sense Input Leakage

Current

CSH_, VCSH_ = 5.5V

-1

+1

µA

Current-Limit Threshold (Fixed)

Current-Limit Threshold

(Adjustable)

Current-Limit Threshold

(Negative)

VLIMIT_

VLIMIT_

VNEG

VCSH_ - VCSL_, ILIM_ = VCC

VILIM_ = 2.00V

VCSH_ - VCSL_ VILIM_ = 1.00V

VILIM_ = 0.50V

VCSH_ - VCSL_, SKIP = VCC, percent of

current limit

70

75

80

mV

170

200

230

91

100

109

mV

42

50

58

-120

%

Current-Limit Threshold (Zero

Crossing)

VZX

VPGND - VLX_, SKIP = GND, ILIM_ = VCC

3

mV

Idle-Mode™ Threshold

ILIM_ = VCC

10

16

22

mV

VIDLE

VCSH_ - VCSL_

With respect to current-

limit threshold (VLIMIT)

20

%

ILIM_ Leakage Current

ILIM3 = ILIM5 = GND or VCC

-0.1

+0.1

µA

Soft-Start Ramp Time

tSS

Measured from the rising edge of ON_ to

full scale

512 /

fOSC

s

INTERNAL FIXED LINEAR REGULATORS

LDO5 Output Voltage

VLDO5

ON3 = ON5 = GND, 6V < VIN < 26V,

0 < ILDO5 < 100mA

4.80 4.95 5.10

V

LDO5 Undervoltage-Lockout Fault

Threshold

Rising edge, hysteresis = 1%

3.75

4.0

4.25

V

LDO5 Bootstrap Switch Threshold

Rising edge of CSL5, hysteresis = 1%

4.41

4.75

V

LDO5 Bootstrap Switch

Resistance

LDO5 to CSL5, VCSL5 = 5V,

ILDO5 = 50mA

0.75

3

Ω

Idle Mode is a trademark of Maxim Integrated Products, Inc.

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