Datasheet

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19-2419; Rev 6; 10/14

MAX5048

7.6A, 12ns, SOT23/TDFN, MOSFET Driver

For pricing, delivery, and ordering information, please contact Maxim Direct

at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.

General Description

The MAX5048A/MAX5048B are high-speed MOSFET

drivers capable of sinking/sourcing 7.6A/1.3A peak cur-

rents. These devices take logic input signals and drive

a large external MOSFET. The MAX5048A/MAX5048B

have inverting and noninverting inputs that give the

user greater flexibility in controlling the MOSFET. They

feature two separate outputs working in complementary

mode, offering flexibility in controlling both turn-on and

turn-off switching speeds.

The MAX5048A/MAX5048B have internal logic circuitry,

which prevents shoot-through during output state

changes. The logic inputs are protected against volt-

age spikes up to +14V, regardless of V+ voltage.

Propagation delay time is minimized and matched

between the inverting and noninverting inputs. The

MAX5048A/MAX5048B have very fast switching times

combined with very short propagation delays (12ns

typ), making them ideal for high-frequency circuits.

The MAX5048A/MAX5048B operate from a +4V to +12.6V

single power supply and typically consume 0.95mA of

supply current. The MAX5048A has CMOS input logic

levels, while the MAX5048B has standard TTL input logic

levels. These devices are available in space-saving

6-pin SOT23 and TDFN packages.

Applications

Power MOSFET Switching

Switch-Mode Power Supplies

DC-DC Converters

Motor Control

Power-Supply Modules

Features

o Independent Source-and-Sink Outputs for

Controllable Rise and Fall Times

o +4V to +12.6V Single Power Supply

o 7.6A/1.3A Peak Sink/Source Drive Current

o 0.23Ω Open-Drain n-Channel Sink Output

o 2Ω Open-Drain p-Channel Source Output

o 12ns (typ) Propagation Delay

o Matching Delay Time Between Inverting and

Noninverting Inputs

o V

/2 CMOS (MAX5048A)/TTL (MAX5048B) Logic

Inputs

o 1.6V Input Hysteresis

o Up to +14V Logic Inputs (Regardless of V+

Voltage)

o Low Input Capacitance: 2.5pF (typ)

o -40°C to +125°C Operating Temperature Range

o 6-Pin SOT23 and TDFN Packages

P_OUT

GNDN_OUT

6 IN+

5 IN-

V+

MAX5048A

MAX5048B

SOT23

TOP VIEW

Pin Configurations

Typical Operating Circuit

Ordering Information

MAX5048A

MAX5048B

P_OUT

N_OUT

IN-

GND

IN+

V+

PART TEMP RANGE

PIN-

PACKAGE

LOGIC

INPUT

TOP

MARK

MAX5048AAUT-T -40°C to +125°C 6 SOT23

CMOS

ABEC

MAX5048BAUT-T -40°C to +125°C 6 SOT23 TTL ABED

MAX5048AATT-T -40°C to +125°C 6 TDFN-EP*

CMOS

AKV

MAX5048BATT-T -40°C to +125°C 6 TDFN-EP* TTL AKW

Pin Configurations continued at end of data sheet.

Denotes a lead(Pb)-free/RoHS-compliant package.

T = Tape and reel.

EP = Exposed pad.

Summary of content (11 pages)

PAGE 1
MAX5048 7.6A, 12ns, SOT23/TDFN, MOSFET Driver General Description The MAX5048A/MAX5048B are high-speed MOSFET drivers capable of sinking/sourcing 7.6A/1.3A peak currents. These devices take logic input signals and drive a large external MOSFET. The MAX5048A/MAX5048B have inverting and noninverting inputs that give the user greater flexibility in controlling the MOSFET.
PAGE 2
MAX5048 7.6A, 12ns, SOT23/TDFN, MOSFET Driver ABSOLUTE MAXIMUM RATINGS Voltages Referenced to GND V+ ...........................................................................-0.3V to +13V IN+, IN-...................................................................-0.3V to +14V N_OUT, P_OUT ............................................-0.3V to (V+ + 0.3V) N_OUT Continuous Output Current (Note 1) ....................390mA P_OUT Continuous Output Current (Note 1).....................
PAGE 3
MAX5048 7.6A, 12ns, SOT23/TDFN, MOSFET Driver ELECTRICAL CHARACTERISTICS (continued) (V+ = +12V, TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 3) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Power-Off Pulldown Resistance V+ = 0 or unconnected, IN-OUT = -10mA, TA = +25°C 3.3 10 Ω Power-Off Pulldown Clamp Voltage V+ = 0 or unconnected, IN-OUT = -10mA, TA = +25°C 0.85 1.0 V 20 µA Output Leakage Current ILK-N N_OUT = V+ 6.
PAGE 4
MAX5048 7.6A, 12ns, SOT23/TDFN, MOSFET Driver ELECTRICAL CHARACTERISTICS (continued) (V+ = +12V, TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS SWITCHING CHARACTERISTICS FOR V+ = +4.5V Rise Time tR Fall Time tF CL = 1000pF 12 CL = 5000pF 41 CL = 10,000pF 74 CL = 1000pF 3.0 CL = 5000pF 7.0 CL = 10,000pF 11.
PAGE 5
MAX5048 7.6A, 12ns, SOT23/TDFN, MOSFET Driver Typical Operating Characteristics (continued) (CL = 1000pF, TA = +25°C, unless otherwise noted.) 16 TA = +25°C TA = 0°C TA = -40°C 14 1MHz 6 500kHz 4 100kHz 12 6 8 12 10 2.5 2.0 1.5 0.5 0 4 3.0 1.0 75kHz 40kHz 2 10 0 4 6 8 10 12 0 400 800 1200 1600 2000 LOAD CAPACITANCE (pF) SUPPLY CURRENT vs. TEMPERATURE MAX5048A INPUT THRESHOLD VOLTAGE vs. SUPPLY VOLTAGE MAX5048A SUPPLY CURRENT vs. INPUT VOLTAGE 1.5 1.4 1.
PAGE 6
MAX5048 7.6A, 12ns, SOT23/TDFN, MOSFET Driver Typical Operating Characteristics (continued) (CL = 1000pF, TA = +25°C, unless otherwise noted.) INPUT VOLTAGE vs. OUTPUT VOLTAGE (V+ = +4V, CL = 5000pF) INPUT VOLTAGE vs. OUTPUT VOLTAGE (V+ = +4V, CL = 10,000pF) INPUT VOLTAGE vs. OUTPUT VOLTAGE (V+ = +4V, CL = 5000pF) MAX5048 toc10 MAX5048 toc11 MAX5048 toc12 IN+ 2V/div IN+ 2V/div IN+ 2V/div OUTPUT 2V/div OUTPUT 2V/div OUTPUT 2V/div 20ns/div 20ns/div INPUT VOLTAGE vs.
PAGE 7
MAX5048 7.6A, 12ns, SOT23/TDFN, MOSFET Driver Pin Description PIN NAME FUNCTION 1 V+ 2 P_OUT p-Channel Open-Drain Output. Sources current for MOSFET turn-on. 3 N_OUT n-Channel Open-Drain Output. Sinks current for MOSFET turn-off. 4 GND Power Supply. Bypass to GND with a 0.1µF ceramic capacitor. Ground 5 IN- Inverting Logic Input Terminal. Connect to GND when not used. 6 IN+ Noninverting Logic Input Terminal. Connect to V+ when not used. EP Exposed paddle. Connect to GND.
PAGE 8
MAX5048 7.6A, 12ns, SOT23/TDFN, MOSFET Driver IN+ VIH VIL P_OUT AND N_OUT TIED TOGETHER 90% 10% tD–OFF tF tD–ON tR TIMING DIAGRAM V+ V+ MAX5048A MAX5048B INPUT P_OUT IN+ OUTPUT N_OUT IN- GND CL TEST CIRCUIT Figure 1. Timing Diagram and Test Circuit The quiescent current is 0.95mA typical. The current required to charge and discharge the internal nodes is frequency dependent (see the Typical Operating Characteristics).
PAGE 9
MAX5048 7.6A, 12ns, SOT23/TDFN, MOSFET Driver VS V+ MAX5048A MAX5048B V+ (4V TO 12.6V) P BREAKBEFOREMAKE CONTROL IN- P_OUT MAX5048A MAX5048B N_OUT N_OUT IN+ N IN+ P_OUT V+ IN- GND Figure 2. MAX5048A/MAX5048B Functional Diagram GND Figure 3. Noninverting Application 4V TO 12V VS IN+ V+ P_OUT P MAX5048A/ MAX5048B V+ (4V TO 12.
PAGE 10
MAX5048 7.6A, 12ns, SOT23/TDFN, MOSFET Driver Pin Configurations (continued) TOP VIEW + V+ P_OUT N_OUT 1 2 6 MAX5048A MAX5048B 3 5 4 IN+ IN- GND Package Information For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status.
PAGE 11
MAX5048 7.6A, 12ns, SOT23/TDFN, MOSFET Driver Revision History REVISION NUMBER REVISION DATE 5 11/12 Added “+” lead(Pb)-free/RoHS-compliant designations to Ordering Information 6 10/14 Updated Driver Output Resistance—Pulling Down specifications DESCRIPTION PAGES CHANGED 1, 9 2 Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied.