MAX608 datasheet(2/12 Pages) MAXIM

2 / 12 page

Supply Current

5V or Adjustable, Low-Voltage,

Step-Up DC-DC Controller

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

Supply Voltage

OUT to GND.............................................................-0.3V, 17V

EXT, CS, REF, SHDN, FB to GND ...............-0.3V, (VOUT + 0.3V)

GND to AGND.............................................................0.1V, -0.1V

Continuous Power Dissipation (TA = +70°C)

Plastic DIP (derate 9.09mW/°C above +70°C) ............727mW

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

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

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

Storage Temperature Range .............................-65°C to +160°C

Lead Temperature (soldering, 10sec) .............................+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

(VOUT = 5V, ILOAD = 0mA, TA = -40°C to +85°C where indicated. TA = -25°C to +85°C for all other limits. Typical values are at

TA = +25°C.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

110

µA

Output Voltage (Note 3)

VIN = 2.0V to 5.0V,

over full load range,

circuit of Figure 2a

4.825

5.0

5.175

mV/V

mV/A

Maximum Switch On-Time

tON(max)

µs

Minimum Switch Off-Time

tOFF(min)

1.8

2.3

2.8

µs

Reference Voltage

IREF = 0µA

TA = -25°C to +85°C

1.4625

1.5

1.5375

TA = -40°C to +85°C (Note 1)

1.4475

1.5525

Output Voltage Line

Regulation (Note 4)

Output Voltage Load

Regulation (Note 4)

VOUT = 16.5V,

SHDN

≤ 0.4V

Minimum Start-Up Voltage

No load

1.6

1.8

TA = -25°C to +85°C

1.8

16.5

TA = -40°C to +85°C (Note 1)

1.9

16.5

Input Voltage Range

(Note 2)

Efficiency

REF Load Regulation

-4

0µA

≤ IREF ≤ 100µA

≤ VOUT ≤ 16.5V

100

FB Trip Point Voltage

(Note 5)

VFB

TA = -25°C to +85°C

1.4625

1.5

1.5375

TA = -40°C to +85°C (Note 1)

1.4475

1.5525

VOUT = 1.8V to 16.5V

1.6

µV/V

REF Line Regulation

VIN = 4V, VOUT = 5V, ILOAD = 500mA,

circuit of Figure 2a

VIN = 2V, VOUT = 5V, ILOAD = 0mA to 500mA,

circuit of Figure 2a

VIN = 2.7V to 4.0V, VOUT = 5V, ILOAD = 500mA,

circuit of Figure 2a

TA = -25°C to +85°C

120

TA = -40°C to +85°C (Note 1)

VOUT = 10V,

SHDN

≥ 1.6V

µA

TA = -25°C to +85°C

TA = -40°C to +85°C (Note 1)

4.800

5.0

5.200

VREF

VIH

SHDN Input High Voltage

VIL

SHDN Input Low Voltage

VOUT = 1.8V to 16.5V

0.4

SHDN Input Current

IIN

VOUT = 16.5V, SHDN = 0V or 16.5V

±1

µA

FB Input Current

IFB

TA = -25°C to +85°C

-4

±20

TA = -40°C to +85°C (Note 1)

±40

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