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MAX1540ETJ+T

更新时间： 2024-09-16 21:04:47
品牌 Logo 应用领域
美信 - MAXIM 信息通信管理开关
页数 文件大小 规格书
49页 834K
描述
Dual Switching Controller, Current-mode, 620kHz Switching Freq-Max, BICMOS, PQCC32, 5 X 5 MM, 0.80 MM HEIGHT, MO-220, TQFN-32

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MAX1540ETJ+T 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Obsolete零件包装代码：QFN
包装说明：HVQCCN, LCC32,.2SQ,20针数：32
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.31.00.01风险等级：5.71
模拟集成电路 - 其他类型：DUAL SWITCHING CONTROLLER控制模式：CURRENT-MODE
控制技术：PULSE WIDTH MODULATION最大输入电压：28 V
最小输入电压：5.5 V标称输入电压：15 V
JESD-30 代码：S-PQCC-N32JESD-609代码：e3
长度：5 mm湿度敏感等级：1
功能数量：1端子数量：32
最高工作温度：85 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：HVQCCN
封装等效代码：LCC32,.2SQ,20封装形状：SQUARE
封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度（摄氏度）：260
认证状态：Not Qualified座面最大高度：0.8 mm
子类别：Switching Regulator or Controllers表面贴装：YES
切换器配置：PUSH-PULL最大切换频率：620 kHz
技术：BICMOS温度等级：INDUSTRIAL
端子面层：TIN端子形式：NO LEAD
端子节距：0.5 mm端子位置：QUAD
处于峰值回流温度下的最长时间：30宽度：5 mm
Base Number Matches：1

MAX1540ETJ+T 数据手册

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19-2861; Rev 2; 1/05  
Dual Step-Down Controllers with Saturation  
Protection, Dynamic Output, and Linear Regulator  
General Description  
Features  
♦ Inductor-Saturation Protection  
The MAX1540/MAX1541 dual pulse-width modulation  
(PWM) controllers provide the high efficiency, excellent  
transient response, and high DC-output accuracy nec-  
essary for stepping down high-voltage batteries to gen-  
erate low-voltage chipset and RAM power supplies in  
notebook computers.  
♦ Accurate Differential Current-Sense Inputs  
♦ Dual Ultra-High-Efficiency Quick-PWMs with  
100ns Load-Step Response  
♦ MAX1540  
1.8V/1.2V Fixed or 0.7V to 5.5V Adjustable  
Output (OUT1)  
The Maxim proprietary Quick-PWM™ controllers are  
free running, constant on-time with input feed forward.  
This configuration provides ultra-fast transient  
response, wide input-output (I/O) differential range, low  
supply current, and tight load-regulation characteris-  
tics. The controllers can accurately sense the inductor  
current across an external current-sense resistor in  
series with the output to ensure reliable overload and  
inductor saturation protection. Alternatively, the con-  
trollers can use the synchronous rectifier itself or loss-  
less inductor current-sensing methods to provide  
overload protection with lower power dissipation.  
2.5V/1.5V Fixed or 0.7V to 5.5V Adjustable  
Output (OUT2)  
Fixed 5V, 100mA Linear Regulator  
♦ MAX1541  
External Reference Input (REFIN1)  
Dynamically Selectable Output Voltage—0.7V  
to 5.5V (OUT1)  
2.5V/1.8V Fixed or 0.7V to 5.5V Adjustable  
Output (OUT2)  
Optional Power-Good and Fault Blanking  
During Transitions  
Fixed 5V or Adjustable 100mA Linear Regulator  
For a single step-down PWM controller with inductor-  
saturation protection, external-reference input voltage,  
and dynamically selectable output voltages, refer to the  
MAX1992/MAX1993 data sheet.  
♦ 1% V  
Accuracy over Line and Load  
OUT  
♦ 2V to 28V Battery Input Range  
♦ 170kHz to 620kHz Selectable Switching  
Frequency  
Applications  
♦ Overvoltage/Undervoltage-Protection Option  
♦ 1.7ms Digital Soft-Start  
Notebook Computers  
Core/IO Supplies as Low as 0.7V  
0.7V to 5.5V Supply Rails  
♦ Drives Large Synchronous-Rectifier FETs  
♦ 2V 0.7% Reference Output  
♦ Separate Power-Good Window Comparators  
CPU/Chipset/GPU with Dynamic Voltage Core  
Supplies (MAX1541)  
Pin Configurations  
DDR Memory Termination (MAX1541)  
Active Termination Buses (MAX1541)  
TOP VIEW  
Ordering Information  
OVP/UVP  
SKIP  
1
2
3
4
5
6
7
8
24 LX1  
23 BST1  
22 LDOON  
21 DL1  
PART  
TEMP RANGE PIN-PACKAGE  
LSAT  
MAX1540ETJ  
MAX1541ETL  
-40°C to +85°C 32 Thin QFN 5mm x 5mm  
-40°C to +85°C 40 Thin QFN 6mm x 6mm  
TON  
MAX1540  
V
20 LDOOUT  
19 V+  
CC  
ILIM1  
ILIM2  
REF  
18 DL2  
17 GND  
THIN QFN  
Pin Configurations continued at end of data sheet.  
Quick-PWM is a trademark of Maxim Integrated Products, Inc.  
________________________________________________________________ Maxim Integrated Products  
1
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.  
1234567...49

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