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General Description
The MAX15018A/MAX15018B/MAX15019A/MAX15019B
high-frequency, 125V half-bridge, n-channel MOSFET
drivers drive high- and low-side MOSFETs in high-volt-
age applications. These drivers are independently con-
trolled, and their 35ns (typ) propagation delay, from input
to output, are matched to within 2ns (typ). The high-volt-
age operation with very low and matched propagation
delay between drivers, and high source-/sink-current
capabilities in a thermally enhanced package make
these devices suitable for high-power, high-frequency
telecom power converters. The 125V maximum input
voltage provides plenty of margin over the 100V input
transient requirement of telecom standards. A reliable
on-chip bootstrap diode connected between VDD and
BST eliminates the need for an external discrete diode.
The MAX15018A/MAX15019A both offer noninverting dri-
vers. The MAX15018B/MAX15019B offer a noninverting
high-side driver and an inverting low-side driver (see the
Selector Guide.) The MAX15018_ feature CMOS (VDD/2)
logic inputs. The MAX15019_ feature TTL-logic inputs.
The drivers are available in the industry-standard 8-pin
SO footprint and pin configuration with a thermally
enhanced 8-pin SO package. All devices operate over
the -40°C to +125°C automotive temperature range.
Applications
Telecom Power Supplies
Synchronous Buck DC-to-DC Converters
Half-Bridge, Full-Bridge, and Two-Switch
Forward Converters
Power-Supply Modules
Motor Control
Features
o HIP2100IB/HIP2101IB Pin Compatible
(MAX15018A/MAX15019A)
o Up to 125V VIN Operation
o 8V to 12.6V VDD Input Supply Range
o 3A Peak Source and Sink Current
o 35ns Propagation Delay
o Guaranteed 8ns or Less Propagation Delay
Matching Between High- and Low-Side Drivers
o Both Noninverting/Noninverting and
Noninverting/Inverting Logic-Input Versions
Available
o Up to 15V Logic Inputs, Independent of VDD
Supply Voltage
o Low 8pF Input Capacitance
o Available in CMOS (VDD/2) or TTL Logic-Level
Inputs with Hysteresis
o Available in a Space-Saving, Thermally Enhanced
8-Pin SO-EP Package
MAX15018/MAX15019
125V/3A, High-Speed,
Half-Bridge MOSFET Drivers
________________________________________________________________
Maxim Integrated Products
1
MAX15018A
MAX15018B
MAX15019A
MAX15019B
8
1
VDD
DL
7
2
BST
GND
6
3
DH
IN_L
5
4
HS
IN_H
SO-EP
TOP VIEW
+
Pin Configuration
Ordering Information
MAX15018A
MAX15019A
BST
DH
HS
VDD
DL
PWM1
PWM2
IN_H
IN_L
VOUT
VIN = 0 TO 125V
N
CBST
VDD = 8V TO
12.6V
CVDD
GND
PART
TEMP RANGE
PIN-PACKAGE
MAX15018AASA+
-40°C to +125°C
8 SO-EP*
MAX15018BASA+
-40°C to +125°C
8 SO-EP*
MAX15019AASA+
-40°C to +125°C
8 SO-EP*
MAX15019BASA+
-40°C to +125°C
8 SO-EP*
Typical Operating Circuit
19-4146; Rev 1; 9/08
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.
+
Denotes a lead-free/RoHS-compliant package.
*
EP = Exposed pad. Internally connected to GND.