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MAX5075
Push-Pull FET Driver with Integrated Oscillator and Clock Output
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Status
Active: In Production.
Description
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 programmable, accurate, integrated oscillator with a synchronizing 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® package and is specified over the -40°C to +125°C operating temperature range.
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Data Sheet
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Key Features
- 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 Capacitive Load
- Synchronizing Clock Frequency Generation Options
- Thermally Enhanced 8-Pin µMAX Package
- -40°C to +125°C Operating Temperature Range
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Applications/Uses
- Current-Fed, High-Efficiency Power-Supply Modules
- Power-Supply Building Subsystems
- Push-Pull Driver Subsystems
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Key Specifications:
| Isolated Power Supplies |
| Part Number |
VIN
(V) |
VIN
(V) |
Topology |
Freq.
(kHz) |
Duty Cycle
(%) |
ISTARTUP
(mA) |
ICC
(mA) |
Gate Drive Current
(A) |
Oper. Temp.
(°C) |
Budgetary Price |
| min |
max |
min |
max |
max |
max |
max |
See Notes |
| MAX5075 |
4.5 |
15 |
Push-Pull |
1500 |
50 |
3 |
3 |
3 |
-40 to +125 |
$2.40 @1k |
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See All Isolated Power Supplies (20)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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| Low-Side MOSFET Drivers |
| Part Number |
Description |
IOUT
(A) |
Rise/ Fall Time @+25°C
(ns) |
Oper. Temp.
(°C) |
Package/Pins |
Smallest Available Pckg.
(mm2) |
Budgetary Price |
| peak |
max |
max w/pins |
See Notes |
| MAX5075 |
| Clock Output | | Internal Oscillator | | Push Pull |
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3 |
10/10 typical (2000pF) |
-40 to +125 |
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15.3 |
$2.40 @1k |
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See All Low-Side MOSFET Drivers (20)
|
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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Diagram
 Typical Operating Circuit
More Information
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Information Index
Document Ref.: 19-3662
Rev 1;
2007-06-04
This page last modified: 2007-06-04
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