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| 型号： | MAX5073ETI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/25页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK BST ADJ 1A/2A 28TQFN |
| 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），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： | 28-WFQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 28-TQFN-EP（5x5） |
19-3504; Rev 2; 2/06
2.2MHz, Dual-Output Buck or Boost Converter
with Internal Power MOSFETs
General Description
The MAX5073 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 device is capable of operating from a wide
5.5V to 23V input voltage range. Each output is program-
mable down to 0.8V in the buck mode and up to 28V in
the boost mode with an output voltage accuracy of ±1%.
In the buck mode, converter 1 and converter 2 can deliv-
er 2A and 1A, respectively. The output switching frequen-
cy of each converter can be programmed from 200kHz to
2.2MHz to avoid harmonics in a radio power supply or to
reduce the size of the power supply. Each output oper-
ates 180° out-of-phase thus reducing input-capacitor rip-
ple 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
MAX5073 ICs in master-slave configuration.
The MAX5073 includes an internal digital soft-start that
reduces inrush current, eliminates output-voltage over-
shoot, and ensures monotonic rise in output voltage
during power-up. The device includes individual shut-
down and a power-good output for each converter.
Protection features include output short-circuit protec-
tion for buck mode and maximum duty-cycle limit for
boost operation, as well as thermal shutdown.
The MAX5073 is available in a thermally enhanced 28-
pin thin QFN package that can dissipate 2.7W at +70°C
ambient temperature. The device is rated for operation
over the -40°C to +85°C extended, or -40°C to +125°C
automotive temperature range.
Applications
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 Sync Input
? Individual Converter Shutdown and Power-Good
Output
? Short-Circuit Protection (Buck)/Maximum Duty-
Cycle Limit (Boost)
? Thermal Shutdown
? Thermally Enhanced 28-Pin Thin QFN Package
Dissipates up to 2.7W at +70°C
Pin Configuration
TOP VIEW
Automotive Radio Power Supply
21
20
19
18
17
16
15
Point-of-Load DC-DC Converters
Telecom Line Card
Networking Line Card
Power-Over-Ethernet Postregulation for PDs
PGOOD2
SOURCE1
SOURCE1
22
23
24
14
13
12
BYPASS
VL
VL
Ordering Information
SGND
PGND
25
26
MAX5073
11
10
V+
OSC
PART
MAX5073ETI
TEMP RANGE
-40 ° C to +85 ° C
PIN-PACKAGE
28 Thin QFN-EP*
(5mm x 5mm)
PKG
CODE
T2855-6
SOURCE2
SOURCE2
27
28
1
2
3
4
5
6
7
9
8
N.C.
SYNC
MAX5073ETI+
-40 ° C to +85 ° C
28 Thin QFN-EP*
(5mm x 5mm)
T2855-6
* EP = Exposed pad.
+ Denotes lead-free package.
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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| MAX5073ETJ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX5074AAUP+T | 制造商:Maxim Integrated Products 功能描述: |
| MAX5074AUP | 功能描述:功率驱动器IC RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| MAX5074AUP+ | 功能描述:功率驱动器IC for Iso IEEE 802.3af PD & Telecom Aps RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| MAX5074AUP+T | 功能描述:功率驱动器IC for Iso IEEE 802.3af PD & Telecom Aps RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
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