MAX158 Maxim, MAX158 Datasheet - Page 8
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MAX158
Manufacturer Part Number
MAX158
Description
High-Efficiency / 26V Step-Up Converter for White LED Main and Subdisplay Backlighting
Manufacturer
Maxim
Datasheet
1.MAX158.pdf
(10 pages)
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When laying out a board, minimize trace lengths
between the IC and R
the input capacitor, and the output capacitor. Keep
traces short, direct, and wide. Keep noisy traces, such
as the LX node trace, away from CS. The input bypass
capacitor (C
possible. For the thin QFN package, PGND and GND
should be connected directly to the exposed paddle
underneath the IC. The ground connections of C
C
traces from IN to the inductor and from the Schottky
diode to the LEDs can be longer.
TRANSISTOR COUNT: 2546
PROCESS: BiCMOS
High-Efficiency, 26V Step-Up Converter
for White LED Main and Subdisplay Backlighting
8
OUT1
_______________________________________________________________________________________
should be as close together as possible. The
IN
) should be placed as close to the IC as
SENSE
Chip Information
, the inductor, the diode,
IN
and
(BALLS SOLDERED DOWN)
Pin Configurations (continued)
TOP VIEW
A
B
C
D
PGND
OUT1
V+
LX
1
OUT2
VP
2
MAX1582
UCSP
CTRL
CS
3
COMP
GND
EN1
EN2
4