MAX1518B 查看數據表（PDF） - Maxim Integrated

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MAX1518B

TFT-LCD DC-DC Converter with Operational Amplifiers

Maxim Integrated 

TFT-LCD DC-DC Converter with

Operational Amplifiers

Typical Operating Characteristics (continued)

(Circuit of Figure 1. VIN = 5V, VMAIN = 13V, VGON = 24V, VGOFF = -8V, VOUT1 = VOUT2 = VOUT3 = VOUT4 = VOUT5 = 6.5V, TA = +25°C

unless otherwise noted.)

GATE-ON REGULATOR LINE REGULATION

0.2

0

-0.2

-0.4

-0.6

-0.8

VGON = 23.5V

IGON = 20mA

-1.0

23 24 25 26 27 28 29 30

INPUT VOLTAGE (V)

GATE-ON REGULATOR LOAD REGULATION

0

-0.05

-0.10

-0.15

-0.20

-0.25

-0.30

0

5

10

15

20

LOAD CURRENT (mA)

GATE-OFF REGULATOR LINE REGULATION

1.00

VGOFF = -8V

IGOFF = 50mA

0.75

0.50

0.25

0

-0.25

-16

-14

-12

-10

-8

INPUT VOLTAGE (V)

GATE-OFF REGULATOR LOAD REGULATION

0

-0.2

-0.4

-0.6

-0.8

-1.0

0

10

20

30

40

50

LOAD CURRENT (mA)

SUP SUPPLY CURRENT

vs. SUP VOLTAGE

2.5

VPOS = VSUP/2

BUFFER CONFIGURATON

2.3

2.1

1.9

1.7

POWER-UP SEQUENCE

MAX1518B toc12

A

0V

B

0V

0V

C

A: VMAIN, 10V/div

B: VSRC, 20V/div

4ms/div

D

0V

C: VGOFF, 10V/div

D: VGON, 20V/div

OPERATIONAL-AMPLIFIER

RAIL-TO-RAIL INPUT/OUTPUT

MAX1518B toc14

VSUP = 6V

A

0V

B

1.5

0V

4.5

6.5

8.5

10.5

12.5

40µs/div

VSUP (V)

A: INPUT SIGNAL, 2V/div

B: OUTPUT SIGNAL, 2V/div

8 _______________________________________________________________________________________

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