MAX608CSLASHD datasheet(3/12 Pages) MAXIM

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5V or Adjustable, Low-Voltage,

Step-Up DC-DC Controller

_______________________________________________________________________________________

100

150

200

SUPPLY CURRENT

vs. INPUT VOLTAGE

INPUT VOLTAGE (V)

100

1000

EFFICIENCY vs. LOAD CURRENT

(VOUT = 12V)

100

LOAD CURRENT (mA)

VIN = 6.0V

VIN = 5.0V

VIN = 3.0V

VIN = 9.0V

VIN = 2.0V

100

1000

EFFICIENCY vs. LOAD CURRENT

(VOUT = 3.3V)

100

LOAD CURRENT (mA)

VIN = 2.0V

VIN = 3.0V

100

1000

EFFICIENCY vs. LOAD CURRENT

(VOUT = 5V)

100

LOAD CURRENT (mA)

VIN = 4.0V

VIN = 3.5V

VIN = 3.0V

VIN = 2.0V

700

600

500

400

300

200

100

LOAD CURRENT vs.

MINIMUM START-UP

INPUT VOLTAGE

MINIMUM START-UP VOLTAGE (V)

1.8

2.2

2.6

3.0

3.4

3.8

4.0

VOUT = 5V

CIRCUIT OF FIGURE 2a

EXTERNAL FET THRESHOLD LIMITS

FULL-LOAD START-UP BELOW 3.7V

500

400

300

200

100

LOAD CURRENT vs.

MINIMUM START-UP

INPUT VOLTAGE

MINIMUM START-UP VOLTAGE (V)

VOUT = 12V

CIRCUIT OF FIGURE 2b

EXTERNAL FET THRESHOLD LIMITS

FULL-LOAD START-UP BELOW 3.6V

1.8

2.2

2.6

3.0

3.4

3.8

4.0

ELECTRICAL CHARACTERISTICS (continued)

(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

Current-Limit Trip Level

VCS

VOUT = 3V to 16.5V

100

115

CS Input Current

ICS

0.01

±1

µA

EXT Rise Time

VOUT = 5V, 1nF from EXT to GND

EXT Fall Time

VOUT = 5V, 1nF from EXT to GND

Note 1: Limits over this temperature range are guaranteed by design.

Note 2: The MAX608 must be operated in bootstrapped mode with OUT connected to the DC-DC circuit output. The minimum output

voltage set point is +3V.

Note 3: Output voltage guaranteed using preset voltages. See Figures 4a–4d for output current capability versus input voltage.

Note 4: Output voltage line and load regulation depend on external circuit components.

Note 5: Operation in the external-feedback mode is guaranteed to be accurate to the VFB trip level, and does not include resistor tolerance.

120

__________________________________________Typical Operating Characteristics

(TA = +25°C, unless otherwise noted.)

TA = -40°C to +85°C (Note 1)

EXT On-Resistance

EXT = high or low

Ω

TA = -25°C to +85°C

MAX608C/D Datasheet(PDF) 3 Page - Maxim Integrated Products

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