MAX1776EUA 查看數據表（PDF） - Maxim Integrated

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MAX1776EUA

24V, 600mA Internal Switch, 100% Duty Cycle, Step-Down Converter

Maxim Integrated 

24V, 600mA Internal Switch, 100% Duty Cycle,

Step-Down Converter

ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 1, VIN = +12V, SHDN = IN, TA = -40°C to +85°C, unless otherwise noted.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

LX Zero-Crossing Threshold

-75

LX Switch Leakage Current

VIN = 24V, LX = GND

Digital Input Level

SHDN, ILIM2

Low

High

2.4

Digital Input Leakage Current

V SHDN, VILIM, VILIM2 = 0 or 24V, VIN = 24V

-1

Low

ILIM Input Level

High

2.2

Note 1: Specifications to -40°C are guaranteed by design, not production tested.

MAX

75

10

0.8

UNITS

mV

µA

V

1

µA

0.05

V

Typical Operating Characteristics

(Circuit of Figure 1, components from Table 3, VIN = +12V, SHDN = IN, TA = +25°C.)

LOAD REGULATION,

CIRCUIT 1, VOUTPUT = 5V

0.2

0

-0.2

VIN = 12V

-0.4

-0.6

VIN = 24V

-0.8

-1.0

-1.2

0

VIN = 15V

100 200 300 400 500 600 700

ILOAD (mA)

LOAD REGULATION,

CIRCUIT 1, VOUTPUT = 3.3V

0.6

0.4

VIN = 5V

0.2

0

-0.2

-0.4 VIN = 12V

-0.6

VIN = 24V

-0.8

VIN = 15V

-1.0

0

100 200 300 400 500 600

ILOAD (mA)

LOAD REGULATION, CIRCUIT 2

0.2

0

-0.2

VIN = 24V

-0.4

-0.6

-0.8

VIN = 12V

-1.0

VIN = 15V

-1.2

0

50 100 150 200 250 300 350 400

ILOAD (mA)

0

-0.1

-0.2

-0.3

-0.4

-0.5

-0.6

-0.7

-0.8

-0.9

1.0

0

LOAD REGULATION, CIRCUIT 5

VIN = 12V

VIN = 24V

VIN = 15V

0.1 0.2 0.3 0.4 0.5 0.6

ILOAD (A)

VOUTPUT vs. VIN,

CIRCUIT 5, VOUTPUT = 5V

3

2

1

ILOAD = 1mA

ILOAD = 50mA

0

ILOAD = 500mA

-1

-2

-3

5 7 9 11 13 15 17 19 21 23 25

VIN (V)

VOUTPUT vs. VIN,

CIRCUIT 5, VOUTPUT = 3.3V

2.0

1.5

1.0

ILOAD = 1mA

0.5

ILOAD = 10mA

0

-0.5

ILOAD = 50mA

-1.0

5 7 9 11 13 15 17 19 21 23 25

VIN (V)

4 _______________________________________________________________________________________

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