MAX1960EEP datasheet(2/29 Pages) MAXIM

Part #	MAX1960EEP

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

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Manufacturer	MAXIM [Maxim Integrated Products]

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

Step-Down Controllers with Voltage Margining

2

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

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.

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

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

CONDITIONS

MIN

TYP

MAX

UNITS

VCC Input Voltage Range

2.35

5.5

V

VCC Input Voltage UVLO

Rising or falling, hysteresis = 33mV (typ)

1.95

2.3

V

VDD Input Voltage UVLO

Rising or falling, hysteresis = 44mV (typ)

3.9

4.45

V

Output Voltage

0.8

V

MAX1960/MAX1962 (measured at FB)

0.796

0.800

0.804

SEL = GND

1.492

1.500

1.508

SEL = REF

1.791

1.800

1.809

SEL not connected

2.487

2.500

2.514

DC Output Accuracy

MAX1961/

MAX1962 (FB = VDD),

measured at output

SEL = VDD

3.272

3.300

3.336

V

Positive Voltage-Margining Shift

MAX1960/MAX1961

+3.8

+4

+4.2

%

Negative Voltage-Margining Shift

MAX1960/MAX1961

-3.8

-4

-4.2

%

Load Regulation Error

0V to full load

0.08

%

Line Regulation Error

VVCC = 2.7V to 5.5V

0.1

%

FB Input Bias Current

-0.2

+0.2

µA

Feedback Transconductance

1

2

3

mS

COMP Discharge Resistance

In shutdown

10

100

Ω

DC-DC Soft-Start Time

1280

cycles

FSET/SYNC = GND

450

500

550

Switching Frequency

FSET/SYNC = VCC

880

1000

1120

kHz

SYNC Frequency Range

450

1200

kHz

Maximum Duty Cycle

f = 1MHz

80

83

%

Maximum Duty Cycle

f = 500kHz

90

92

%

Quiescent Supply Current

11

15

mA

Shutdown Supply Current

15

µA

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