ISL78419 Datasheet, PDF (3/20 Pages) Intersil Corporation – Integrated Automotive TFT-LCD Power Supply Regulator

ISL78419
Pin Descriptions (Continued)
PIN#
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
SYMBOL
SDA I²C compatible serial bidirectional data line
DESCRIPTION
POS VCOM Amplifier Non-inverting input
RSET DCP sink current adjustment pin; connect a resistor between this pin and GND to set the resolution of the DCP output voltage.
VOUT VCOM Amplifier output
NEG VCOM Amplifier inverting input
VDIV
ADJ
RESET
Voltage detector threshold. Connect to the center of a resistive divider between V_IN and GND.
VLOGIC LDO feedback. Connect to the center of a resistive divider between L_OUT and GND to set V_Logic voltage for T_CON.
Voltage detector reset output
L_OUT LDO output. Connect at least one 1µF capacitor to GND for stable operation.
CD2 Voltage detector rising edge delay. Connect a capacitor between this pin and GND to set the rising edge delay.
L_IN LDO input. Connect a 1µF decoupling capacitor close to this pin.
SS Boost Converter Soft-Start. Connect a capacitor between this pin and GND to set the soft-start time.
COMP Boost converter compensation pin. Connect a series resistor and capacitor between this pin and GND to optimize transient
response and stability.
FREQ Boost Converter frequency select; pull it to logic high to operate boost at 1.2MHz. Connect this pin to GND to operate boost at
600kHz.
VIN IC input supply. Connect a 0.1µF decoupling capacitor close to this pin.
LX AVDD boost converter switching node
EN AVDD enable pin
Ordering Information
PART NUMBER
(Notes 1, 2, 3)
PART
MARKING
V_IN RANGE
(V)
TEMP RANGE
(°C)
PACKAGE
(Pb-free)
PKG.
DWG. #
ISL78419ARZ
78419 ARZ
2.5 to 5.5
-40 to +105 28 Ld 4x5 QFN
L28.4x5A
NOTES:
1. Add “-T*” suffix for tape and reel. Please refer to TB347 for details on reel specifications.
2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte
tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil
Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
3. For Moisture Sensitivity Level (MSL), please see device information page for ISL78419 For more information on MSL please see techbrief TB363.
3
FN8292.1
December 3, 2012