MAX618EEE datasheet(4/14 Pages) MAXIM

4 / 14 page

28V, PWM, Step-Up DC-DC Converter

_______________________________________________________________________________________

VOUT

(100mV/div)

VLX

(10V/div)

(1A/div)

MEDIUM-LOAD SWITCHING

WAVEFORMS

MAX618 toc07

VIN = 5V, VOUT = 12V, IOUT = 200mA

µs/div

VOUT

(100mV/

div)

VLX

(10V/div)

(1A/div)

HEAVY-LOAD SWITCHING

WAVEFORMS

MAX618 toc08

VIN = 5V, VOUT = 12V, IOUT = 500mA

µs/div

VOUT

(50mV/div)

VIN

(5V/div)

LINE-TRANSIENT RESPONSE

MAX618 toc09

IOUT = 200mA, VOUT = 12V

2ms/div

Typical Operating Characteristics (continued)

(Circuit of Figure 1, TA = +25°C.)

VOUT

(200mV/div)

IOUT

(100mA/div)

LOAD-TRANSIENT RESPONSE

MAX618 toc10

VIN = 5V, VOUT = 12V

5ms/div

12V

SHDN

(2V/div)

VOUT

(2V/div)

SHUTDOWN RESPONSE

MAX618 toc11

VIN = 5V, VOUT = 12V, ILOAD = 500mA

500

µs/div

0.4

0.2

0.6

1.2

1.4

1.0

0.8

1.6

4567

101112

MAXIMUM OUTPUT CURRENT

vs. INPUT VOLTAGE

INPUT VOLTAGE (V)

VOUT = 12V

0.40

0.45

0.55

0.50

0.60

0.65

010

15202530

NO-LOAD SUPPLY CURRENT

vs. INPUT VOLTAGE

INPUT VOLTAGE (V)

300

400

350

500

450

550

600

650

700

-50

-10

-30

110

SUPPLY CURRENT vs. TEMPERATURE

TEMPERATURE (°C)

VIN = 8V

VIN = 5V

VIN = 3V

INCLUDES CAPACITOR LEAKAGE CURRENT

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

212

17222732

SHUTDOWN CURRENT

vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

MAX618EEE Datasheet(PDF) 4 Page - Maxim Integrated Products

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