MAX16928(2011) データシートの表示（PDF） - Maxim Integrated

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MAX16928
(Rev.:2011)

Automotive TFT-LCD Power Supply with Boost Converter and Gate Voltage Regulators

Maxim Integrated 

MAX16928

Automotive TFT-LCD Power Supply with Boost

Converter and Gate Voltage Regulators

Typical Operating Characteristics (continued)

(VINA = +5V, VSH = +12V, VGH = +18V, VGL = -6V, VREG = 3.3V, TA = +25NC, unless otherwise noted.)

SUPPLY SEQUENCING WAVEFORMS

(VSEQ = VINA)

MAX16928 toc08

VENP

5V/div

VGH

5V/div

VSH

5V/div

VREG

5V/div

VGL

5V/div

10ms/div

LOAD REGULATION

(POSITIVE-GATE VOLTAGE REGULATOR)

0

-0.4

-0.8

-1.2

-1.6

-2.0

-2.4

-2.8

-3.2

-3.6

-4.0

0 2 4 6 8 10 12 14 16 18 20

LOAD CURRENT (mA)

LINE REGULATION

(POSITIVE-GATE VOLTAGE REGULATOR)

1.0

0.8

0.6

0.4

ILOAD = 10mA

0.2

0

-0.2

ILOAD = 20mA

-0.4

-0.6

-0.8

-1.0

20 21 22 23 24 25 26 27 28 29 30

VCP VOLTAGE (V)

LOAD REGULATION

(NEGATIVE-GATE VOLTAGE REGULATOR)

8

7

6

5

4

3

2

1

0

0 2 4 6 8 10 12 14 16 18 20

LOAD CURRENT (mA)

LINE REGULATION

(NEGATIVE-GATE VOLTAGE REGULATOR)

0.40

0.32

0.24

0.16

0.08

ILOAD = 10mA

0

-0.08

-0.16

-0.24

ILOAD = 20mA

-0.32

-0.40

-24 -22 -20 -18 -16 -14 -12 -10 -8

VCN VOLTAGE (V)

LOAD REGULATION (3.3V REGULATOR)

0

LOAD-TRANSIENT RESPONSE

(3.3V LINEAR REGULATOR)

MAX16928 toc14

-0.05

-0.10

450mA

IOUT

-0.15

50mA

500mA/div

-0.20

-0.25

-0.30

-0.35

EXTERNAL NPN TRANSISTOR USED

-0.40

0 50 100 150 200 250 300 350 400 450 500

LOAD CURRENT (mA)

100µs/div

VREG

(AC-COUPLED)

100mV/div

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