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MAX16922AUP_/V+ PDF预览

MAX16922AUP_/V+

更新时间： 2024-11-06 11:18:23
品牌 Logo 应用领域
美信 - MAXIM 转换器
页数 文件大小 规格书
17页 989K
描述
2.2MHz, Dual, Step-Down DC-DC Converters, Dual LDOs, and RESET

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MAX16922AUP_/V+ 数据手册

 浏览型号MAX16922AUP_/V+的Datasheet PDF文件第2页浏览型号MAX16922AUP_/V+的Datasheet PDF文件第3页浏览型号MAX16922AUP_/V+的Datasheet PDF文件第4页浏览型号MAX16922AUP_/V+的Datasheet PDF文件第5页浏览型号MAX16922AUP_/V+的Datasheet PDF文件第6页浏览型号MAX16922AUP_/V+的Datasheet PDF文件第7页 
19-5039; Rev 1; 5/10  
2.2MHz, Dual, Step-Down DC-DC  
Converters, Dual LDOs, and RESET  
MAX1692  
General Description  
Features  
o 1.2A High-Efficiency 2.2MHz DC-DC Converter  
The MAX16922 power-management integrated circuit  
(PMIC) is designed for medium power-level automotive  
applications and integrates multiple supplies in a small  
footprint. The device includes one high-voltage step-  
down converter (OUT1) and three low-voltage cascad-  
ed DC-DC converters (OUT2, OUT3, OUT4). OUT1 and  
OUT2 are step-down DC-DC converters, and OUT3/  
OUT4 are linear regulators. The device also includes a  
reset output (RESET) and a high-voltage-compatible  
enable input (EN).  
3.7V to 28V Operating Supply Voltage  
45V Load-Dump Protection  
Output Voltage: 3.0V to 5.5V  
o 600mA High-Efficiency 2.2MHz DC-DC Converter  
2.7V to 5.5V Supply Voltage  
Output Voltage: 1.0V to 3.9V  
180° Out-of-Phase Operation  
Forced-PWM and Auto-PWM Modes  
o LDO Linear Regulators  
OUT3: 1.0V to 4.15V at 300mA  
OUT4: 1.0V to 4.15V at 300mA  
Separate Inputs for Increased Efficiency  
The 1.2A output high-efficiency, step-down DC-DC con-  
verter (OUT1) operates from a voltage up to 28V contin-  
uous and is protected from load-dump transients up to  
45V. The 600mA output high-efficiency step-down DC-  
DC converter (OUT2) runs from a voltage up to 5.5V.  
The two 300mA LDO linear regulators offer low dropout  
of only 130mV (typ). The power-good RESET output  
provides voltage monitoring for OUT1 and OUT2.  
o Enable Input  
o RESET Output Monitoring on OUT1 and OUT2  
o Overtemperature and Short-Circuit Protection  
o Available in  
5mm x 5mm x 0.8mm, 20-Pin TQFN-EP  
4.5mm x 6.5mm, 20-Pin TSSOP-EP  
OUT1 and OUT2 use fast 2.2MHz PWM switching and  
small external components. The high-voltage converter  
(OUT1) enters skip mode automatically under light  
loads to prevent an overvoltage condition from occur-  
ring at the output. The low-voltage synchronous DC-DC  
converter (OUT2) can operate in forced-PWM mode to  
prevent any AM band interference or high-efficiency  
auto-PWM mode.  
Ordering Information  
PART  
TEMP RANGE  
PIN-PACKAGE  
MAX16922ATP_ /V+*  
MAX16922AUP_ /V+*  
-40°C to +125°C 20 TQFN-EP**  
-40°C to +125°C 20 TSSOP-EP**  
*Insert the desired suffix letters (from the Selector Guide) into  
the blank “_” to complete the part number.  
+Denotes a lead(Pb)-free/RoHS-compliant package.  
/V denotes an automotive qualified part.  
**EP = Exposed pad.  
The MAX16922 includes overtemperature shutdown  
and overcurrent limiting. All devices are designed to  
operate from -40°C to +125°C ambient temperature.  
Typical Operating Circuit  
V
PV1  
PV1  
EN  
OUTS2  
2.2µH  
4.7µF  
LX2  
V
OUT2  
10µF  
PWM  
PV3  
V
OUT1  
PGND2  
PV2  
BST  
4.7µF  
4.7µF  
MAX16922  
0.1µF  
V
V
OUT3  
GND1  
GND3  
OUT3  
4.7µF  
4.7µH  
LX1  
V
OUT1  
V
OUT2  
OUTS1  
PV4  
10µF  
4.7µF  
V
OUT1  
LSUP  
OUT4  
GND  
OUT4  
1µF  
20kΩ  
4.7µF  
GND2  
RESET  
EP  
________________________________________________________________ Maxim Integrated Products  
1
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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