MAX1960 データシートの表示（PDF） - Maxim Integrated

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MAX1960

2.35V to 5.5V, 0.5% Accurate, 1MHz PWM Step-Down Controllers with Voltage Margining

Maxim Integrated 

2.35V to 5.5V, 0.5% Accurate, 1MHz PWM

Step-Down Controllers with Voltage Margining

ABSOLUTE MAXIMUM RATINGS

VCC, CTL_, CS, FSET/SYNC, SEL, EN,

OUT to GND ..........................................................-0.3V to +6V

ILIM, COMP, REF, FB, CLKOUT,

C- to GND ..............................................-0.3V to VAVDD + 0.3V

C+ to GND.............-0.3V to higher of VVCC + 1V or VVDD + 0.3V

VDD, AVDD to GND ..............-0.3V to higher of VVCC - 0.3V or 6V

DL to PGND ................................................-0.3V to VVDD + 0.3V

BST to GND ............................................................-0.3V to +12V

DH to LX ...................................................................-0.3V to +6V

LX to BST..................................................................-6V to +0.3V

PGND to GND, or VDD to AVDD ............................-0.3V to +0.3V

Continuous Power Dissipation (TA = +70°C)

20-Pin QSOP (derate up to +70°C)..............................727mW

20-Pin QSOP (derate above +70°C) ........................9.1mW/°C

Operating Temperature Range (Extended).........-40°C to +85°C

Junction Temperature ......................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

ELECTRICAL CHARACTERISTICS

(VVCC = 3.3V, Circuits of Figures 9–12, TA = 0°C to +85°C. Typical values are at TA = +25°C, unless otherwise noted.)

PARAMETER

VCC Input Voltage Range

VCC Input Voltage UVLO

VDD Input Voltage UVLO

Output Voltage

DC Output Accuracy

Positive Voltage-Margining Shift

Negative Voltage-Margining Shift

Load Regulation Error

Line Regulation Error

FB Input Bias Current

Feedback Transconductance

COMP Discharge Resistance

DC-DC Soft-Start Time

Switching Frequency

SYNC Frequency Range

Maximum Duty Cycle

Maximum Duty Cycle

Quiescent Supply Current

Shutdown Supply Current

CONDITIONS

Rising or falling, hysteresis = 33mV (typ)

Rising or falling, hysteresis = 44mV (typ)

MAX1960/MAX1962 (measured at FB)

MAX1961/

MAX1962 (FB = VDD),

measured at output

SEL = GND

SEL = REF

SEL not connected

SEL = VDD

MAX1960/MAX1961

MAX1960/MAX1961

0V to full load

VVCC = 2.7V to 5.5V

In shutdown

FSET/SYNC = GND

FSET/SYNC = VCC

f = 1MHz

f = 500kHz

MIN

2.35

1.95

3.9

0.8

0.796

1.492

1.791

2.487

3.272

+3.8

-3.8

-0.2

1

450

880

450

80

90

TYP

0.800

1.500

1.800

2.500

3.300

+4

-4

0.08

0.1

2

10

1280

500

1000

83

92

11

MAX

5.5

2.3

4.45

0.804

1.508

1.809

2.514

3.336

+4.2

-4.2

+0.2

3

100

550

1120

1200

15

15

UNITS

V

V

V

V

V

%

%

%

%

µA

mS

Ω

cycles

kHz

kHz

%

%

mA

µA

2 _______________________________________________________________________________________

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