MAX5075 Maxim Integrated Products, MAX5075 Datasheet

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MAX5075

Manufacturer Part Number
MAX5075
Description
Push-Pull FET Driver
Manufacturer
Maxim Integrated Products
Datasheet

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The MAX5075 is a +4.5V to +15V push-pull, current-fed
topology driver subsystem with an integrated oscillator
for use in telecom module power supplies. The device
drives two MOSFETs connected to a center-tapped
transformer primary providing secondary-side, isolated,
negative or positive voltages. This device features a pro-
grammable, accurate, integrated oscillator with a syn-
chronizing clock output that synchronizes an external
PWM regulator. A single external resistor programs the
internal oscillator frequency from 50kHz to 1.5MHz.
The MAX5075 incorporates a dual MOSFET driver with
±3A peak drive currents and 50% duty cycle. The
MOSFET driver generates complementary signals to
drive external ground-referenced n-channel MOSFETs.
The MAX5075 is available with a clock output frequency
to MOSFET driver frequency ratio of 1x, 2x, and 4x. The
MAX5075 is available in a thermally enhanced 8-pin
µMAX
+125°C operating temperature range.
Current-Fed, High-Efficiency Power-Supply Modules
Power-Supply Building Subsystems
Push-Pull Driver Subsystems
19-3662; Rev 0; 5/05
µMAX is a registered trademark of Maxim Integrated Products, Inc.
Pin Configuration appears at end of data sheet.
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Push-Pull FET Driver with Integrated Oscillator
GND
V
IN
®
package and is specified over the -40°C to
CONTROLLER
GND
PWM
V
IN
SYNCIN
DRVH
________________________________________________________________ Maxim Integrated Products
DRVL
General Description
V
CC
Applications
DGND
V
CLK
RT
CC
MAX5075
I.C.
NDRV2
NDRV1
PGND
♦ Current-Fed, Push-Pull Driver Subsystem
♦ Programmable, Accurate Internal Oscillator
♦ Single +4.5V to +15V Supply Voltage Range
♦ Dual ±3A Gate-Drive Outputs
♦ 1mA Operating Current at 250kHz with No
♦ Synchronizing Clock Frequency Generation
♦ Thermally Enhanced 8-Pin µMAX Package
♦ -40°C to +125°C Operating Temperature Range
*EP = Exposed paddle.
Note: All devices specified for -40°C to +125°C operating
temperature range.
MAX5075AAUA 8 µMAX-EP* AAAU
MAX5075BAUA 8 µMAX-EP*
MAX5075CAUA 8 µMAX-EP* AAAW
Capacitive Load
Options
PART
and Clock Output
Typical Operating Circuit
PIN-
PACKAGE
Ordering Information
MARK
AAAV
TOP
CODE
U8E-2
U8E-2
U8E-2
PKG
Features
f
CLK
V
RATIO
OUT
/f
1
2
4
NDRV_
1

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