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| 型号： | MAX5098AATJ+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/28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： | 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 ~ 0.85 V，4.5 V ~ 28 V |
| 输入电压： | 4.5 V ~ 19 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 ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-WFQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 32-TQFN-EP（5x5） |
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ATION
EVALU
AVAIL
19-4111; Rev 0; 5/08
KIT
ABLE
Dual, 2.2MHz, Automotive Buck or Boost
Converter with 80V Load-Dump Protection
General Description
The MAX5098A is a dual-output, high-switching-frequen-
cy DC-DC converter with integrated n-channel switches
that can be used either in high-side or low-side configura-
tion. Each output can be configured either as a buck con-
verter or a boost converter. In the buck configuration, this
device delivers up to 2A from converter 1 and 1A from
converter 2. The MAX5098A also integrates a load-dump
protection circuitry that is capable of handling load-dump
transients up to 80V for automotive applications. The
load-dump protection circuit utilizes an internal charge-
pump to drive the gate of an external n-channel MOSFET.
When an overvoltage or load-dump condition occurs, the
series protection MOSFET absorbs the high voltage tran-
sient to prevent damage to lower voltage components.
The DC-DC converters operate over a wide operating
voltage range from 4.5V to 19V. The MAX5098A oper-
ates 180° out-of-phase with an adjustable switching fre-
quency to minimize external components while allowing
the ability to make trade-offs between the size, efficiency,
and cost. The high switching frequency (up to 2.2MHz)
also allows this device to operate outside the AM band
for automotive applications.
This device utilizes voltage-mode control for stable oper-
ation and external compensation, thus the loop gain is
tailored to optimize component selection and transient
response. This device can be synchronized to an exter-
nal clock fed at the SYNC input. Also, a clock output
(CKO) allows a master-slave connection of two devices
with a four-phase synchronized switching sequence.
Additional features include internal digital soft-start, indi-
vidual enable for each DC-DC regulator (EN1 and EN2),
open-drain power-good outputs (PGOOD1 and
PGOOD2), and a shutdown input (ON/OFF).
Other features of the MAX5098A include overvoltage pro-
tection, short-circuit (hiccup current limit) and thermal
protection. The MAX5098A is available in a thermally
enhanced, exposed pad, 5mm x 5mm, 32-pin TQFN
package and is fully specified over the automotive
-40°C to +125°C temperature range.
Features
o Wide 4.5V to 5.5V or 5.2V to 19V Input Voltage
Range (with Up to 80V Load-Dump Protection)
o Dual-Output DC-DC Converter with Integrated
Power MOSFETs
o Each Output Configurable in Buck or Boost Mode
o Adjustable Outputs from 0.8V to 0.85V IN Buck
Configuration) and from V IN to 28V (Boost
Configuration)
o I OUT1 and I OUT2 of 2A and 1A (Respectively) in
Buck Configuration
o Switching Frequency Programmable from 200kHz
to 2.2MHz
o Synchronization Input (SYNC)
o Clock Output (CKO) for Four-Phase Master-Slave
Operation
o Individual Converter Enable Input and Power-
Good Output
o Low-I Q (7μA) Standby Current (ON/OFF)
o Internal Digital Soft-Start and Soft-Stop
o Short-Circuit Protection on Outputs and
Maximum Duty-Cycle Limit
o Overvoltage Protection on Outputs with Auto
Restart
o Thermal Shutdown
o Thermally Enhanced 32-Pin TQFN Package
Dissipates up to 2.7W at +70°C
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
Applications
MAX5098AATJ+
-40°C to +125°C
32 TQFN-EP*
Automotive AM/FM Radio Power Supply
Automotive Instrument Cluster Display
Pin Configuration appears at end of data sheet
+Denotes a lead-free package.
*EP = Exposed pad.
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
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相关代理商/技术参数 |
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|---|---|
| MAX5099 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Dual, 2.2MHz, Automotive Synchronous Buck Converter with 80V Load-Dump Protection |
| MAX5099ATJ | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Dual, 2.2MHz, Automotive Synchronous Buck Converter with 80V Load-Dump Protection |
| MAX5099ATJ+ | 功能描述:直流/直流开关转换器 Dual 2.2MHz Synch Buck 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 |
| MAX5099ATJ+T | 功能描述:直流/直流开关转换器 Dual 2.2MHz Synch Buck 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 |
| MAX5099EVKIT+ | 功能描述:电源管理IC开发工具 MAX5098A/99 Eval Kit 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 |
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