MAX5089 Maxim Integrated Products, MAX5089 Datasheet
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MAX5089
Manufacturer Part Number
MAX5089
Description
2.2MHz - 2A Buck Converters with an Integrated High-Side Switch
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX5089.pdf
(24 pages)
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MAX5089ATE+
Manufacturer:
Maxim Integrated Products
Quantity:
135
The MAX5088/MAX5089 high-frequency, DC-DC con-
verters with an integrated n-channel power MOSFET
provide up to 2A of load current. The MAX5088
includes an internal power MOSFET to enable the
design of a nonsynchronous buck topology power sup-
ply. The MAX5089 is for the design of a synchronous
buck topology power supply. These devices operate
from a 4.5V to 5.5V or 5.5V to 23V input voltage and a
200kHz to 2.2MHz resistor-programmable switching
frequency. The voltage-mode architecture with a peak
switch current-limit scheme provides stable operation
up to a 2.2MHz switching frequency. The MAX5088
includes a clock output for driving a second DC-DC
converter 180° out-of-phase and a power-on-reset
(RESET) output. The MAX5089 includes a power-good
output and a synchronous rectifier driver to drive an
external low-side MOSFET in the buck converter config-
uration for high efficiency.
The MAX5088/MAX5089 protect against overcurrent
conditions by utilizing a peak current limit as well as
overtemperature shutdown providing a very reliable
and compact power source for point-of-load regulation
applications. Additional features include synchroniza-
tion, internal digital soft-start, and an enable input. The
MAX5088/MAX5089 are available in a thermally
enhanced, space-saving 16-pin TQFN (5mm x 5mm)
package and operate over the -40°C to +125°C tem-
perature range.
19-3944; Rev 1; 5/06
Pin Configurations continued 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.
MAX5088ATE
MAX5089ATE
PART
xDSL Modem Power Supply
Automotive Radio Power Supply
Servers and Networks
IP Phones/WLAN Access Points
CONFIGURATION
Synchronous Buck
________________________________________________________________ Maxim Integrated Products
Nonsynchronous
Buck
General Description
2.2MHz, 2A Buck Converters with an
Selector Guide
Applications
Synchronous FET
PGOOD Output,
RESET Output,
Clock Output
FEATURES
Driver
Integrated High-Side Switch
♦ 4.5V to 5.5V or 5.5V to 23V Input Voltage Range
♦ Output Voltage Adjustable Down to 0.6V
♦ 2A Output Current
♦ Synchronous Rectifier Driver Output (MAX5089)
♦ Resistor-Programmable Switching Frequency
♦ External Synchronization and Enable (On/Off)
♦ Clock Output for Driving Second Converter 180°
♦ Integrated 150mΩ High-Side n-Channel Power
♦ Power-On Reset Output (MAX5088)/Power-Good
♦ Short-Circuit Protection
♦ Thermal-Shutdown Protection
♦ Thermally Enhanced 16-Pin TQFN Package
+Denotes lead-free package.
MAX5088ATE+
MAX5089ATE+
for Higher Efficiency
from 200kHz to 2.2MHz
Inputs
Out-Of-Phase (MAX5089)
MOSFET
Output (MAX5089)
Dissipates 2.7W
TOP VIEW
*EXPOSED PAD.
PART
BST/VDD
RESET
SYNC
EN
13
14
15
16
-40°C to +125°C
-40°C to +125°C
TEMP RANGE
+
12
Ordering Information
1
EP*
5mm x 5mm
THIN QFN
Pin Configurations
MAX5088
11
2
10
3
PIN-
PACKAGE
16 TQFN
16 TQFN
www.DataSheet4U.com
9
4
Features
8
7
6
5
V
V+
BYPASS
OSC
T1655-2
T1655-2
L
CODE
PKG
1