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| 型号： | MAX5072ETJ+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/27页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK BST ADJ 1A/2A 32TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 60 |
| 类型： | 降压（降压），升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 2 |
| 输出电压： | 0.8 V ~ 28 V |
| 输入电压： | 4.5 V ~ 23 V |
| PWM 型： | 电压模式 |
| 频率 - 开关： | 200kHz ~ 2.2MHz |
| 电流 - 输出： | 1A，2A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-WFQFN 裸露焊盘 |
| 包装： | 管件 |
| 供应商设备封装： | 32-TQFN-EP（5x5） |
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19-3503; Rev 2; 2/06
ATION
ILABLE
EVALU
AVA
KIT
2.2MHz, Dual-Output Buck or Boost
Converter with POR and Power-Fail Output
General Description
The MAX5072 is a dual-output DC-DC converter with inte-
grated high-side n-channel power MOSFETs. Each output
can be configured either as a buck converter or a boost
converter. The MAX5072 is designed to manage the
power requirements of xDSL modems. The wide 5.5V to
23V input voltage range allows for the use of inexpensive
AC adapters to power the device in xDSL modem appli-
cations. Each output is programmable down to 0.8V in the
buck mode and up to 28V in the boost mode with an out-
put voltage accuracy of ±1%. In the buck mode, convert-
er 1 and converter 2 can deliver 2A and 1A, respectively.
The output switching frequency of each converter can be
programmed from 200kHz to 2.2MHz to avoid harmonics
in the xDSL frequency band of operation. Each output
operates 180° out-of-phase, thus reducing input-capaci-
tor ripple current, size, and cost. A SYNC input facilitates
external frequency synchronization. Moreover, a CLKOUT
output provides out-of-phase clock signal with respect to
converter 2, allowing four-phase operation using two
MAX5072 ICs in master-slave configuration.
The MAX5072 includes an internal digital soft-start that
reduces inrush current, eliminates output-voltage over-
shoot, and ensures monotonic rise in output voltage dur-
ing power-up. The device includes a power-good output
and power-on reset as well as manual reset. In addition,
each converter output can be shut down individually. The
MAX5072 features a "dying gasp" output, which goes low
when the input voltage drops below a preprogrammed
voltage. Protection features include output short-circuit
protection for buck mode and maximum duty-cycle limit
for boost operation, as well as thermal shutdown.
The MAX5072 is available in a thermally enhanced 32-pin
thin QFN package that can dissipate 2.7W at +70°C ambi-
ent temperature. The device is rated for operation over the
Features
? 4.5V to 5.5V or 5.5V to 23V Input Supply Voltage
Range
? 0.8V (Buck) to 28V (Boost) Output Voltage
? Two Independent Output DC-DC Converters with
Internal Power MOSFETs
? Each Output can be Configured in Buck or Boost
Mode
? I OUT1 and I OUT2 of 2A and 1A (Respectively) in
Buck Mode
? 180° Out-of-Phase Operation
? Clock Output for Four-Phase Operation
? Switching Frequency Programmable from 200kHz
to 2.2MHz
? Digital Soft-Start and Independent Converter
Shutdown
? SYNC Input, Power-On Reset, Manual Reset, And
Power-Fail Output
? Short-Circuit Protection (Buck)/Maximum Duty-
Cycle Limit (Boost)
? Thermal Shutdown
? Thermally Enhanced 32-Pin Thin QFN Package
Dissipates up to 2.7W at +70°C
Pin Configuration
TOP VIEW
-40°C to +85°C extended, or -40°C to +125°C automotive
24
23
22
21
20
19
18
17
temperature range.
xDSL Modems
Applications
PGOOD1
SOURCE1
SOURCE1
25
26
27
16
15
14
MR
BYPASS
VL
xDSL Routers
Point-of-Load DC-DC Converters
Ordering Information
PGND
SGND
PGND
28
29
30
MAX5072
13
12
11
VL
V+
OSC
PART
TEMP RANGE
PIN-PACKAGE
PKG
CODE
SOURCE2
SOURCE2
31
32
10
9
PFI
SYNC
MAX5072ETJ
-40 ° C to +85 ° C
32 Thin QFN-EP*
(5mm x 5mm)
T3255-4
1
2
3
4
5
6
7
8
* EP = Exposed pad.
Ordering Information continued at end of data sheet.
THIN QFN
________________________________________________________________ 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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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5072ETJ+ | 功能描述:直流/直流开关转换器 2.2MHz Buck or Boost Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX5072ETJ+T | 功能描述:直流/直流开关转换器 2.2MHz Buck or Boost Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX5072ETJ-T | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX5072EVKIT | 功能描述:电源管理IC开发工具 2.2MHz Buck or Boost Converter RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| MAX5073 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:2.2MHz, Dual-Output Buck or Boost Converter with Internal Power MOSFETs |
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