MAX5078 Datasheet, PDF (1/12 Pages) Maxim Integrated Products – 4A, 20ns, MOSFET Driver

19-3346; Rev 1; 9/05
4A, 20ns, MOSFET Driver
General Description
The MAX5078A/MAX5078B high-speed MOSFET drivers
source and sink up to 4A peak current. These devices
feature a fast 20ns propagation delay and 20ns rise and
fall times while driving a 5000pF capacitive load.
Propagation delay time is minimized and matched
between the inverting and noninverting inputs. High
sourcing/sinking peak currents, low propagation delay,
and thermally enhanced packages make the MAX5078A/
MAX5078B ideal for high-frequency and high-power
circuits.
The MAX5078A/MAX5078B operate from a 4V to 15V
single power supply and consume 40µA (typ) of supply
current when not switching. These devices have an
internal logic circuitry that prevents shoot-through during
output state changes to minimize the operating current
at a high switching frequency. The logic inputs are pro-
tected against voltage spikes up to +18V, regardless of
the V_DD voltage. The MAX5078A has CMOS input logic
levels while the MAX5078B has TTL-compatible input
logic levels.
The MAX5078A/MAX5078B feature both inverting and
noninverting inputs for greater flexibility in controlling the
MOSFET. They are available in a 6-pin TDFN (3mm x
3mm) package and operate over the automotive temper-
ature range of -40°C to +125°C.
Power MOSFET Switching
Switch-Mode Power Supplies
DC-DC Converters
Applications
Motor Control
Power-Supply Modules
Typical Operating Circuit
4V TO 15V
V_DD
MAX5078A
MAX5078B
IN+
OUT
N
Features
♦ 4V to 15V Single Power Supply
♦ 4A Peak Source/Sink Drive Current
♦ 20ns (typ) Propagation Delay
♦ Matching Delay Between Inverting and
Noninverting Inputs
♦ V_DD / 2 CMOS (MAX5078A)/TTL (MAX5078B) Logic
Inputs
♦ 0.1 x V_DD (CMOS) and 0.3V (TTL) Logic-Input
Hysteresis
♦ Up to +18V Logic Inputs (Regardless of V_DD
Voltage)
♦ Low Input Capacitance: 2.5pF (typ)
♦ 40µA (typ) Quiescent Current
♦ -40°C to +125°C Operating Temperature Range
♦ 6-Pin TDFN Package
Ordering Information
PART
TEMP
RANGE
MAX5078AATT
-40°C to
+125°C
MAX5078BATT
-40°C to
+125°C
*EP = Exposed pad.
PIN-
PACKAGE
TOP PKG
MARK CODE
6 TDFN-EP* AHL T633-1
6 TDFN-EP* AHM T633-1
Selector Guide
PART
MAX5078AATT
MAX5078BATT
PIN-PACKAGE
6 TDFN-EP
6 TDFN-EP
LOGIC INPUT
V_DD / 2 CMOS
TTL
Pin Configuration
TOP VIEW
IN- 1
MAX5078
6 IN+
GND 2
5 OUT
PWM IN
IN-
GND
GND 3
4 V_DD
TDFN-EP
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