MAX1722_12 datasheet(2/12 Pages) MAXIM

Part #	MAX1722

Description	1.5μA IQ, Step-Up DC-DC Converters in Thin SOT23-5

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Manufacturer	MAXIM [Maxim Integrated Products]

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MAX1722/MAX1723/MAX1724

1.5µA IQ, Step-Up DC-DC Converters

in Thin SOT23-5

2

Maxim Integrated

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VBATT = 1.2V, VOUT = 3.3V (MAX1722/MAX1723), VOUT = VOUT(NOM) (MAX1724), SHDN = OUT, RL = ∞, TA = 0°C to +85°C,

unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)

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.

OUT, SHDN, BATT, LX to GND ................................-0.3V to +6V

FB to GND ................................................-0.3V to (VOUT + 0.3V)

OUT, LX Current.......................................................................1A

Continuous Power Dissipation (TA = +70°C)

5-Pin Thin SOT23 (derate 7.1mW/°C above +70°C) ...571mW

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

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

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

Soldering Temperature

Lead(Pb)-

Free packages..............................................+260°C

Packages

Containing Lead(Pb)....................................+240°C

TA = +85°C

TA = +25°C

TA = 0°C to +85°C

TA = +25°C

TA = 0°C to +85°C

TA = +25°C

TA = 0°C to +85°C

TA = +25°C

TA = 0°C to +85°C

TA = +25°C

TA = 0°C to +85°C

TA = +25°C

MAX1723 (Note 2)

MAX1722/MAX1724

Shutdown Current into OUT

0.1

µA

Quiescent Current into OUT

1.5

3.6

µA

Quiescent Current into BATT

0.01

µA

MAX1723/MAX1724

(Notes 3, 4)

MAX1722/MAX1724

(Note 4)

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

2.633

2.767

Output Voltage

VOUT

2.673

2.7

2.727

V

0.87

1.2

Minimum Startup Input Voltage

0.83

0.91

V

2.970

3.0

3.030

2.925

3.075

3.267

3.3

3.333

3.218

3.383

Operating Input Voltage

Minimum Input Voltage

0.8

V

VIN

0.91

5.5

V

1.2

5.5

4.950

5.0

5.050

4.875

5.125

Output Voltage Range

VOUT

2

5.5

V

Feedback Voltage

VFB

1.223

1.235

1.247

V

1.210

1.260

Feedback Bias Current

IFB

1.5

20

nA

2.2

N-Channel On-Resistance

RDS(ON)

0.5

1.0

Ω

P-Channel On-Resistance

RDS(ON)

1.0

2.0

Ω

N-Channel Switch Current Limit

ILIM

400

500

600

mA

Switch Maximum On-Time

tON

3.5

5

6.5

µs

Synchronous Rectifier Zero-

Crossing Current

520

35

mA

CONDITIONS

MAX1724EZK50

MAX1724EZK27

TA = +25°C,

RL = 3kΩ

MAX1724EZK30

MAX1722/MAX1723

MAX1724EZK33

MAX1722/MAX1723

MAX1722/MAX1724

VOUT forced to 3.3V

TA = +25°C

VOUT forced to 3.3V

MAX1722/MAX1724

MAX1723 (Note 2)

TA = +85°C

TA = +25°C

0.01

0.5

TA = +85°C

TA = +25°C

0.001

0.5

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