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PDF MAX15054 Data sheet ( Hoja de datos )
| Número de pieza | MAX15054 | |
| Descripción | High-Side MOSFET Driver | |
| Fabricantes | Maxim Integrated Products | |
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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)
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VIN
D1
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.
Pin Configuration appears at end of data sheet.
TOP
MARK
ACOM
Typical Operating Circuits
VDD
C1
MAX15054
BST
HDRV
CBST
Q1
LX
GND HI
L1 D3
D2
C2
R1
IN CFB
EN
VCC
R2 C3
R3
GATE NDRV
DRAIN
OV
OUT1
VDRV
C4
MAX16838
OUT2
ISET
R7
R8 C5
R9
DIM
COMP
R4
SGND
C4
PGND
FLT
CS
RT
LEDGND
R6
R5
Typical Operating Circuits continued at end of data sheet.
________________________________________________________________ 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.
1 page  
High-Side MOSFET Driver for HB LED Drivers
and DC-DC Applications
Typical Operating Characteristics (continued)
(VDD = VBST = 5V, VLX = VGND = 0V, TA = +25°C, unless otherwise noted.)
2MHz OPERATION
MAX15054 toc08
HI
2V/div
0V
HDRV
2V/div
NO LOAD ON HDRV
200ns/div
0V
HDRV OUTPUT HIGH/LOW
vs. TEMPERATURE
140
VBST - VHDRV
120 SOURCING 100mA
100
80
60 VHDRV - VLX
SINKING 100mA
40
20 OUTPUT HIGH = VBST - VHDRV
OUTPUT LOW = VHDRV - VLX
0
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (NC)
4% DUTY CYCLE AT 2MHz
MAX15054 toc10
HI
2V/div
0V
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10ns/div
HDRV
2V/div
0V
96% DUTY CYCLE AT 2MHz
MAX15054 toc11
2V/div
2V/div
10ns/div
TURN-ON/TURN-OFF PROPAGATION
DELAY vs. TEMPERATURE
13.0
12.5
12.0 tD_OFF
11.5
11.0
10.5 tD_ON
10.0
9.5
9.0
8.5
8.0
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
RISE TIME AND FALL TIME
MAX15054 toc13
HI
HDRV
2V/div
0V
4.7nF CAPACITOR
CONNECTED FROM
HDRV TO GND,
LX = GND
20ns/div
HDRV
2V/div
0V
HI
TURN-ON AND TURN-OFF
PROPAGATION DELAY
MAX15054 toc14
HI
HDRV
1V/div
1nF CAPACITOR CONNECTED
FROM HDRV TO GND,
LX = GND
40ns/div
0V
_______________________________________________________________________________________ 5
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet MAX15054.PDF ] | |
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