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| 型号： | MAX5089ATE+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/24页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 2A 16TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.6 V ~ 20 V |
| 输入电压： | 4.5 V ~ 23 V |
| PWM 型： | 电压模式 |
| 频率 - 开关： | 312kHz ~ 2.1MHz |
| 电流 - 输出： | 2A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 16-TQFN-EP（5x5） |
19-3944; Rev 1; 5/06
ATION
AILABL
EVALU E
AV
KIT
2.2MHz, 2A Buck Converters with an
Integrated High-Side Switch
General Description
Features
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
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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)
for Higher Efficiency
Resistor-Programmable Switching Frequency
from 200kHz to 2.2MHz
External Synchronization and Enable (On/Off)
Inputs
Clock Output for Driving Second Converter 180°
Out-Of-Phase (MAX5089)
Integrated 150m ? High-Side n-Channel Power
MOSFET
Power-On Reset Output (MAX5088)/Power-Good
Output (MAX5089)
Short-Circuit Protection
Thermal-Shutdown Protection
Thermally Enhanced 16-Pin TQFN Package
Dissipates 2.7W
Ordering Information
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.
PART
MAX5088 ATE+
MAX5089 ATE+
TEMP RANGE
-40°C to +125°C
-40°C to +125°C
PIN-
PACKAGE
16 TQFN
16 TQFN
PKG
CODE
T1655-2
T1655-2
Applications
xDSL Modem Power Supply
Automotive Radio Power Supply
Servers and Networks
+ Denotes lead-free package.
Pin Configurations
TOP VIEW
IP Phones/WLAN Access Points
Selector Guide
SYNC 13
12
11
10
9
8
V L
PART
CONFIGURATION
FEATURES
RESET 14
7
V+
MAX5088ATE
Nonsynchronous
Buck
RESET Output,
Clock Output
PGOOD Output,
BST/VDD 15
EN 16
+ EP*
MAX5088
6
5
BYPASS
OSC
MAX5089ATE
Synchronous Buck
Synchronous FET
Driver
1
2
3
4
Pin Configurations continued at end of data sheet.
*EXPOSED PAD.
THIN QFN
5mm x 5mm
________________________________________________________________ Maxim Integrated Products
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.
1
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