MAX8784EVKIT datasheet(9/24 Pages) MAXIM

Part #	MAX8784EVKIT

Description	Step-Up Regulator, Internal Charge Pumps, Switch Control, and Operational Amplifier for TFT LCDs

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Manufacturer	MAXIM [Maxim Integrated Products]

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Step-Up Regulator, Internal Charge Pumps, Switch

Control, and Operational Amplifier for TFT LCDs

_______________________________________________________________________________________

9

HIGH-VOLTAGE SWITCH

CONTROL FUNCTION

MAX8784 toc16

10

µs/div

CTL: 5V/div

GON: 10V/div

CTL

GON

CGON = 1.5nF

RDRN = 1k

Ω TO AVDD

OPERATIONAL AMPLIFIER

FREQUENCY RESPONSE

FREQUENCY ( MHz)

10

1

-6

-3

0

3

6

-9

0.1

100

CLOAD = 56pF

CLOAD = 15pF

CLOAD = 33pF

OPERATIONAL AMPLIFIER

RAIL-TO-RAIL OPERATION

MAX8784 toc18

2

µs/div

POS1: 5V/div

OUT1: 5V/div

OUT1

POS1

OPERATIONAL AMPLIFIER

LOAD-TRANSIENT RESPONSE

MAX8784 toc19

2

µs/div

VOUT1: 200mV/div

ILOAD: 100mA/div

VOUT1

ILOAD

OPERATIONAL AMPLIFIER

LARGE-SIGNAL RESPONSE

MAX8784 toc20

200ns/div

OUT1: 5V/div

POS1: 5V/div

POS1

OUT1

OPERATIONAL AMPLIFIER

SMALL-SIGNAL STEP RESPONSE

MAX8784 toc21

100ns/div

POS1: 50mV/div (AC-COUPLED)

OUT1: 50mV/div (AC-COUPLED)

POS1

OUT1

Typical Operating Characteristics (continued)

(Circuit of Figure 1, VCC = 5V, AVDD = 14V, VPOUT = 28V, VGOFF = -9V, TA = +25°C, unless otherwise noted.)

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MAX8784EVKIT Datasheet(PDF) 9 Page - Maxim Integrated Products

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