Rainbow Electronics MAX15054 User Manual
General description, Applications, Features
_______________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
High-Side MOSFET Driver for HB LED Drivers
and DC-DC Applications MAX15054
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
19-4747; Rev 0; 9/09
+Denotes a lead(Pb)-free/RoHS-compliant package.
Pin Configuration appears at end of data sheet.
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
TOP
MARK
MAX15054AUT+ -40NC to +125NC
6 SOT23
ACOM
Typical Operating Circuits
Q1
D
1
D
2
L1
C
BST
V
DD
V
IN
GND
HI
BST
HDRV
LX
EN
V
CC
V
DRV
DIM
COMP
DRAIN
OV
OUT1
OUT2
ISET
FLT
CS
RT
SGND
PGND
IN
GATE NDRV
LEDGND
C
1
MAX15054
MAX16838
D
3
R
8
R
9
C
5
R
5
R
7
R
6
R
4
C
4
C
4
C
3
C
2
R
3
R
2
R
1
CFB
Typical Operating Circuits continued at end of data sheet.