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Maxim Integrated Semiconductor Electronic Components Datasheet

MAX15054 Datasheet

High-Side MOSFET Driver

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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)
www.DataSheet4U.com
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.


Maxim Integrated Semiconductor Electronic Components Datasheet

MAX15054 Datasheet

High-Side MOSFET Driver

No Preview Available !

High-Side MOSFET Driver for HB LED Drivers
and DC-DC Applications
ABSOLUTE MAXIMUM RATINGS
VDD to GND............................................................. -0.3V to +6V
LX to GND................................................................. -2V to +65V
HDRV to LX................................................-0.3V to (VDD + 0.3V)
BST to LX................................................................. -0.3V to +6V
HI to GND............................................................... -0.3V to +15V
dV/dt at LX........................................................................ 50V/ns
Peak Current into HDRV (< 100ns)....................................... Q2A
Continuous Current into HDRV ..................................... Q100mA
Thermal Resistance (Note 1)
Junction-to-Ambient Thermal Resistance (BJA)..........115NC/W
Junction-to-Case Thermal Resistance (BJC).................80NC/W
Operating Temperature Range......................... -40NC to +125NC
Maximum Junction Temperature.....................................+150NC
Storage Temperature Range............................ -65NC to +150NC
Lead Temperature (soldering, 10s).................................+300NC
Continuous Power Dissipation (TA = +70NC)
6-Pin SOT23 (derate 8.7mW/NC above +70NC)..........695.7mW
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-
layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VDD = VBST = 5V, VLX = VGND = 0V, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at TA = TJ = +25°C,
unless otherwise noted.) (Note 2)
PARAMETER
Operating Supply Voltage
VDD Quiescent Supply Current
BST Quiescent Supply Current
BST Operating Supply Current
VDD Undervoltage Lockout
Threshold
VDD Undervoltage Lockout
Threshold Hysteresis
www.DataSBhSeTet-4toU-.LcXomUndervoltage
Lockout Threshold
BST-to-LX Undervoltage
Lockout Threshold Hysteresis
LOGIC INPUT (HI)
HI Logic-High Threshold
HI Logic-Low Threshold
HI Logic-Input Hysteresis
HI Input Current
HI Input Resistance
DRIVER
LX Withstand Voltage
BST Withstand Voltage
LX Pulldown Current
Driver Output Resistance
(Sourcing)
Driver Output Resistance
(Sinking)
SYMBOL
VDD
IDD
IBST
IBSTO
CONDITIONS
No switching
No switching
fSW = 500kHz, no load
VDD_UVLO VDD rising
VBST_
UVLO
BST rising
VIH
VIL
IIN HI = GND
RIN
VLX_MAX
VBST_MAX
RON_HP
RON_HN
VLX = 2.5V
VBST - VLX = 4.5V,
100mA sourcing
VBST - VLX = 4.5V,
100mA sinking
TA = +25NC
TA = +125NC
TA = +25NC
TA = +125NC
MIN
4.6
3.92
3.54
TYP
40
65
0.3
4.22
0.2
3.82
0.2
MAX
5.5
75
125
1.3
4.56
UNITS
V
FA
FA
mA
V
V
4.1 V
V
3.9
1.8
0.9
-2 +2
300
60
65
500 740 1100
1 1.5
1.25
2
0.75
1
1 1.5
V
V
V
FA
kI
V
V
FA
I
I
2   _______________________________________________________________________________________


Part Number MAX15054
Description High-Side MOSFET Driver
Maker Maxim Integrated Products
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MAX15054 Datasheet PDF






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