TFT-LCD DC-DC Converter with

Operational Amplifiers

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3

ELECTRICAL CHARACTERISTICS (continued)

wise noted.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

LX On-Resistance

160

250

m

Ω

LX Leakage Current

0.02

40

µA

LX Current Limit

2.5

3.0

3.5

A

Current-Sense

Transconductance

3.0

3.8

5.0

S

Soft-Start Period

14

ms

Soft-Start Step Size

A

OPERATIONAL AMPLIFIERS

SUP Supply Range

4.5

13.0

V

SUP Supply Current

2.4

3.8

mA

Input Offset Voltage

°C

012

mV

Input Bias Current

+1

±50

nA

Input Common-Mode Range

0

V

Common-Mode Rejection Ratio

CMRR

0

45

dB

Open-Loop Gain

125

dB

15

3

Output Voltage Swing, High

150

80

mV

2

15

Output Voltage Swing, Low

80

150

mV

Short-Circuit Current

50

150

mA

Output Source and Sink Current

|

40

mA

Power-Supply Rejection Ratio

PSRR

DC, 6V

60

dB

Slew Rate

13

V/µs

-3dB Bandwidth

12

MHz

Gain-Bandwidth Product

GBW

Buffer configuration

8

MHz

GATE-ON LINEAR-REGULATOR CONTROLLER

FBP Regulation Voltage

1.231

1.250

1.269

V

FBP Fault Trip Level

0.96

1.00

1.04

V

FBP Input Bias Current

-50

+50

nA

FBP Effective Load-Regulation

Error (Transconductance)

-0.7

-1.5

%