MAX1709ESE datasheet(2/12 Pages) MAXIM

2 / 12 page

4A, Low-Noise, High-Frequency,

Step-Up DC-DC Converter

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VOUT = VCLK = +3.6V, ONA = ONB = FB = GND, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°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.

ONA, ONB, OUT, SS/LIM, 3.3/5 to GND ...............-0.3V to +6.0V

LX to PGND ...........................................................-0.3V to +6.0V

FB, CLK, REF to GND.............................. -0.3V to (VOUT + 0.3V)

PGND to GND .......................................................-0.3V to +0.3V

Continuous Power Dissipation (TA = +70°C)

16-Pin Narrow SO (derate 16.5mW/°C above +70°C) .....1.3W

Operating Temperature Range ...........................-40°C to +85°C

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

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

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

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

3.3/5 = GND, ISW = 1A

3.26

3.34

3.42

Output Voltage

VFB < 0.1V (Note 1)

3.3/5 = OUT, ISW = 1A

4.92

5.05

5.17

Load Regulation

Measured between 1A < ISW < 3A (Note 2)

-0.25

-0.45

%/A

FB Regulation Voltage

ISW = 1A

1.215

1.240

1.265

FB Input Current

VFB = +1.5V

200

Output Voltage Adjust Range

2.5

5.5

Output Undervoltage Lockout

(Note 3)

2.0

2.3

Frequency in Startup Mode

VOUT = 1.5V

400

kHz

Minimum Startup Voltage

IOUT < 1mA (Note 1), TA = +25

°C (Note 4)

0.9

1.1

Minimum Operating Voltage

(Note 5)

0.7

Soft-Start Pin Current

VSS/LIM = 1V

3.2

5.0

µA

OUT Supply Current

VFB = 1.5V (Note 6)

200

440

µA

OUT Leakage Current In

Shutdown

V ONB = 3.6V

0.1

µA

LX Leakage Current

VLX = V ONB = VOUT = +5.5V

0.1

µA

N-Channel Switch

On-Resistance

Ω

SS/LIM = open

7.5

N-Channel Current Limit

SS/LIM = 150k to GND

3.5

6.5

RMS Switch Current

ARMS

Reference Voltage

IREF = 0

1.245

1.260

1.275

Reference Load Regulation

-1

µA ″ IREF ″ 50µA4

Reference Supply Rejection

+2.5V ″ VOUT ″ +5.5V

0.2

ONA,

ONB, 3.3/5, 1.2V < VOUT < 5.5V

0.2 x

VOUT

Input Low Level (Note 7)

CLK, 2.7V < VOUT < 5.5V

0.2 x

VOUT

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