Internal-Switch Boost Regulator with

Integrated 3-Channel Scan Driver for TFT LCDs

8

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PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Propagation Delay Between OE

Rising Edge and CKV/CKVB Edge

450

ns

Output Slew Rate CKV, CKVB

Without charge sharing,

20

V/μs

Propagation Delay Between STV

and STVP

450

ns

STVP Output Slew Rate

20

V/μs

Charge-Sharing Discharge Path

Resistance

CKV to CKVCS and

CKVB to CKVBCS

400

DISH Switch Resistance

GOFF to -3V, DISH = -3V

500

DISH Turn-On Threshold

Dish falling

-1.8

V

STV, CPV, OE Input Low Voltage

0.8

V

STV, CPV, OE Input High Voltage

1.6

V

OECON Input Low Voltage

1.5

V

OECON Input High Voltage

2.0

V

OECON Sink Current

0.4

mA

CONTROL INPUTS

Input Low Voltage

SHDN

0.6

V

1.8

Input High Voltage

2.0

V

ELECTRICAL CHARACTERISTICS (continued)

should not exceed 5.5V.

Note 3: Step-up regulator switching is not enabled until BOOST is above undervoltage threshold.

Note 4: SET external resistor range is verified at DAC full scale.

Note 5: Guaranteed by design, not production tested.

Note 6: -40°C specs are guaranteed by design, not production tested.

SDA

SCL

Figure 1. Timing Definitions Used in the Electrical Characteristics