ISL78022 Intersil Corporation, ISL78022 Datasheet - Page 16

• Manufacturer Part Number: ISL78022
• Description: (ISL78020 / ISL78022) Automotive Grade TFT-LCD DC/DC
• Manufacturer: Intersil Corporation

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TFT-LCD backplane (V
divider string. They feature rail-to-rail input and output
capability, they are unity gain stable, and have low power
consumption (typical 600µA per amplifier). The ISL78020
and ISL78022 have a -3dB bandwidth of 12MHz while
maintaining a 10V/µs slew rate.
NOTE: Not to scale
V
ON SLICE
COM
CIRCUIT
) or the gamma-correction
V
16
BOOST
V
CDEL
V
V
V
REF
OFF
ON
IN
FIGURE 22. START-UP SEQUENCE
ISL78020, ISL78022
START-UP SEQUENCE
t
t
ON
DEL1
TIMED BY C
DEL
Short Circuit Current Limit
The ISL78020 and ISL78022 will limit the short circuit
current to ±180mA if the output is directly shorted to the
positive or the negative supply. If an output is shorted for a
long time, the junction temperature will trigger the
Over-Temperature Protection limit and hence the part will
shut down.
t
DEL3
t
DEL2
OPERATION
NORMAL
PRESENT
FAULT
December 6, 2007
FN6386.2