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MAX16929

Automotive TFT-LCD Power Supply with Boost

Converter and Gate Voltage Regulators

Typical Operating Characteristics (continued)

LINE REGULATION (BOOST)

-0.8

-0.6

-0.4

-0.2

0

0.2

0.4

0.6

0.8

1.0

-1.0

INPUT VOLTAGE (V)

5.0

4.5

4.0

3.5

3.0

5.5

LOAD REGULATION (BOOST)

LOAD CURRENT (mA)

400

300

200

100

0

500

-0.8

-0.6

-0.4

-0.2

0

0.2

0.4

0.6

0.8

1.0

-1.0

EFFICIENCY vs. LOAD CURRENT

(BOOST)

LOAD CURRENT (mA)

400

300

200

100

0

500

10

20

30

40

50

60

70

80

90

100

0

INA SHUTDOWN SUPPLY CURRENT

INPUT VOLTAGE (V)

5.0

4.5

4.0

3.5

3.0

5.5

1

2

3

4

5

6

7

8

9

10

0

LOAD DUMP RESPONSE

MAX16929 toc09

20V/div

2A/div

5V/div

100ms/div

42V

12V

SHORT-CIRCUIT BEHAVIOR (BUCK)

MAX16929 toc08

5V/div

2A/div

5V/div

100ms/div

LINE-TRANSIENT RESPONSE (BUCK)

MAX16929 toc07

10V/div

28V

12V

(AC-COUPLED)

50mV/div

1ms/div