MAX1997 datasheet(9/31 Pages) MAXIM

Part #	MAX1997

Description	Quintuple/Triple-Output TFT LCD Power Supplies with Fault Protection and VCOM Buffer

PDF	31 Pages

Scroll/Zoom	100%

Manufacturer	MAXIM [Maxim Integrated Products]

Direct Link	https://www.maximintegrated.com/en.html

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9 / 31 page

Quintuple/Triple-Output TFT LCD Power Supplies

with Fault Protection and VCOM Buffer

_______________________________________________________________________________________

Typical Operating Characteristics (continued)

(Circuit of Figure 1, VIN = 3.3V, VMAIN = 9V, VG_ON = 20V, VG_OFF = -7V, VLOGIC = 2.5V, VGAMMA = 8.6V, TA = +25

°C,

unless otherwise noted.)

REG P (GATE-ON VOLTAGE)

LOAD REGULATION

LOAD CURRENT (mA)

-0.20

-0.15

-0.10

-0.05

-0.25

0.1

REG N (GATE-OFF VOLTAGE)

LOAD REGULATION

LOAD CURRENT (mA)

-0.32

-0.24

-0.16

-0.08

-0.40

0.1

REG 1 (LOGIC SUPPLY)

LOAD REGULATION

LOAD CURRENT (mA)

-0.8

-0.6

-0.4

-0.2

-1.0

1000

100

REG 2 (GAMMA REFERENCE)

LOAD REGULATION

LOAD CURRENT (mA)

-0.16

-0.12

-0.08

-0.04

-0.20

0.1

REG 1 (LOGIC SUPPLY)

LOAD TRANSIENT RESPONSE

MAX1997 toc18

µs/div

2.49V

300mA

2.5V

100mA

200mA

A: LOAD CURRENT, 0 TO 250mA, 100mA/div

B: VLOGIC = 2.5V, 10mV/div, AC-COUPLED

REG 2 (GAMMA REFERENCE)

VMAIN TRANSIENT REJECTION

MAX1997 toc19

µs/div

8.8V

20V

8.58V

8.60V

8.62V

A: VLX, 20V/div

B: VGAMMA = 8.6V, 20mV/div, AC-COUPLED

C: VMAIN = 9V, 200mV/div, AC-COUPLED

D: IMAIN = 0 TO 1A, 1A/div

9.0V

MAX1997 Datasheet(PDF) 9 Page - Maxim Integrated Products

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