MAX1968 데이터 시트보기 (PDF) - Maxim Integrated

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MAX1968

Power Drivers for Peltier TEC Modules

Maxim Integrated 

MAX1968/MAX1969

Power Drivers for Peltier TEC Modules

Typical Operating Characteristics (continued)

(VDD = 5V, VCTLI = 1V, VFREQ = GND, RLOAD = 1Ω, circuit of Figure 1, TA = +25°C, unless otherwise noted.)

SWITCHING FREQUENCY

vs. TEMPERATURE

650

630 FREQ = 500kHz

610

VCTLI = 1.5V

RTEC = 1Ω

590

570

550

530

510

490

470

450

-40 -20 0 20 40 60 80

TEMPERATURE (°C)

SWITCHING FREQUENCY CHANGE

vs. VDD

35

FREQ = 500kHz

30

25

20

15

10

5

0

3.0 3.5 4.0 4.5 5.0 5.5

VDD (V)

REFERENCE VOLTAGE CHANGE

vs. VDD

1.0

0.5

0

-0.5

-1.0

-1.5

-2.0

-2.5

-3.0

-3.5

3.0 3.5 4.0 4.5 5.0 5.5

VDD (V)

REFERENCE VOLTAGE CHANGE

vs. TEMPERATURE

2

1

0

-1

-2

-3

-4

-5

-40 -20 0 20 40 60 80

TEMPERATURE (°C)

REFERENCE LOAD REGULATION

VDD = 3.3V

0.6

0.4

0.2

0

-0.2

-0.4

-0.6

-0.8

-1.0

-1.2

SINK SOURCE

-1.4

-0.4 -0.2 0 0.2 0.4 0.6 0.8 1.0

LOAD CURRENT (mA)

REFERENCE LOAD REGULATION

VDD = 5V

0.6

0.4

0.2

0

-0.2

-0.4

-0.6

-0.8

-1.0

SINK SOURCE

-1.2

-0.4 -0.2 0 0.2 0.4 0.6 0.8 1.0

LOAD CURRENT (mA)

STARTUP AND SHUTDOWN WAVEFORMS

MAX1968 toc16

VSHDN

5V/div

IDD

0V

0mA/div

0A

ITEC

00mA/div

0A

VCTLI = 2V

2ms/div

VCTLI

1V/div

ITEC

2A/div

CTLI STEP RESPONSE

MAX1968 toc17

VDD

1.5V 2V/div

0A

ITEC

20mA/div

1ms/div

VDD STEP RESPONSE

MAX1968 toc18

0V

1A

10ms/div

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