MAX607 datasheet(2/12 Pages) MAXIM

2 / 12 page

Low-Profile, 5V/12V or Adjustable, Step-Up

DC-DC Converters for Flash Memory/PCMCIA Cards

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ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VIN = 3.3V, GND = PGND = FB = 0V, SHDN = IN, 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.

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

LX, OUT to GND .....................................................-0.3V to +15V

PGND to GND.....................................................................±0.3V

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

SS, SHDN to GND ....................................................-0.3V to +6V

Continuous Power Dissipation (TA = +70°C)

µMAX (derate 4.10mW/°C above +70°C) ....................330mW

SO (derate 5.88mW/°C above +70°C) .........................471mW

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

Storage Temperature .......................................................+160°C

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

VIN = 3V to 5.5V. For VFB below this voltage,

output regulates to 12V.

VSHDN = 0 or VIN

3V < VIN < 5V, FB = IN, ILOAD = 0 to 180mA

VIN = 5.5V

VIN = 3V

2V < (VOUT + 0.5V - VIN) < 8V (see Pulse-

Frequency-Modulation Control Scheme section)

3V < VIN < 5.5V

(tON = K / VIN)

VOUT = 13V

VSHDN = VIN, VSS = 150mV

VSHDN = 0, OUT = IN

VLX = 12V

4.5V < VIN < 5.5V, FB = GND, ILOAD = 0 to 120mA

0.1V < VFB < (VIN - 0.1V)

VOUT = 13V

VIN = 3V to 5.5V

VSHDN = VSS = 0

CONDITIONS

0.1

FB Input Low Voltage

µA

±1

SHDN Input Current

0.66VIN

SHDN Input High Voltage

0.25VIN

SHDN Input Low Voltage

0.3

0.7

Switch Off-Time Ratio

3.8

6.0

8.6

µs-A

1.9

3.0

4.3

Switch On-Time Constant (K)

µA

OUT Input Current

µA

0.01

Shutdown Quiescent Current

150

300

µA

250

500

Quiescent Supply Current

0.5

4.8

5.0

5.2

Output Voltage (Note 1)

2.4

2.8

3.0

5.5

Supply Voltage

Undervoltage Lockout Threshold

Ω

SS Resistance

0.7

1.1

Switch Current Limit

µA

Switch Off-Leakage

Ω

0.4

Switch On-Resistance

11.5

12.0

12.5

1.96

2.00

2.04

FB Regulation Setpoint

VIN

12.5

Adjustable Output Voltage Range

0.5

Line Regulation

UNITS

MIN

TYP

MAX

PARAMETER

VIN = 3V to 5.5V. For VFB above this voltage,

output regulates to 5V.

VIN - 0.1

FB Input High Voltage

VFB = 2.05V, VOUT = 13V

200

FB Input Current

MAX606

MAX607

MAX606

MAX607

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