MAX15054 Datasheet, PDF (1/9 Pages) Maxim Integrated Products – High-Side MOSFET Driver for HB LED Drivers and DC-DC Applications

19-4747; Rev 0; 9/09
High-Side MOSFET Driver for HB LED Drivers
and DC-DC Applications
General Description
The MAX15054 is a high-side, n-channel MOSFET driver
for high-voltage applications capable of switching at high
frequencies. This device is controlled by a CMOS logic-
level signal referenced to ground and features a very
short (12ns, typ) propagation delay from input to output.
The high-voltage operation and high source/sink-current
capability make the MAX15054 ideal for HB LED drivers
and DC-DC converters.
The MAX15054 is well suited to complement other Maxim
LED driver products such as the MAX16814, MAX16838,
MAX16833, MAX16834, and MAX16826. The MAX15054
adds a high-side driver to those products that include only a
low-side driver; it then allows for buck-boost configurations
for multistring drivers similar to the MAX16814, MAX16838,
and MAX16826, and for buck-boost conversion with output
referenced to ground for single-string drivers such as the
MAX16834 and MAX16833.
The MAX15054 is available in the industry-standard 6-pin
SOT23 package and operates over the -40NC to +125NC
automotive temperature range.
Applications
HB LED Drivers for Single and Multiple Strings
LED Backlight Drivers
High-Side Driver for DC-DC Converters
(Buck, Buck-Boost, Half-Bridge, Full-Bridge)
Features
S Input Voltage on High-Side n-Channel MOSFET Up
to 60V
S Up to 13.5V Logic Input Independent of Supply
Voltage
S 2A Peak Source and Sink Current
S 12ns Propagation Delay
S Rise and Fall Times of 6ns while Driving 1000pF
Capacitance
S Low Input Capacitance
S Low-Side and High-Side Undervoltage Protection
S Allows Buck-Boost Topology Referred to Ground
for LED Drivers and DC-DC Converters
S Allows Buck-Boost Topology for Multistring LED
Drivers
S 6-Pin SOT23 Package
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
MAX15054AUT+ -40NC to +125NC
6 SOT23
+Denotes a lead(Pb)-free/RoHS-compliant package.
TOP
MARK
ACOM
Pin Configuration appears at end of data sheet.
Typical Operating Circuits
VIN
R1
R2
D1
VDD
C1
MAX15054
BST
HDRV
CBST
Q1
LX
GND
HI
L1
D2
C2
IN CFB
GATE NDRV
EN
VCC
C3
R3
DRAIN
OV
OUT1
VDRV
C4
MAX16838
OUT2
R7
ISET
D3
R8
C5
R9
DIM
COMP
R4
SGND
C4
PGND
FLT
CS
RT
R6
LEDGND
R5
Typical Operating Circuits continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products   1
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or visit Maxim’s website at www.maxim-ic.com.