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MAX4960

更新时间： 2024-09-12 04:41:55
品牌 Logo 应用领域
美信 - MAXIM 电池
页数 文件大小 规格书
17页 336K
描述
High-Voltage OVP with Battery Switchover

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MAX4960 数据手册

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±9-0874; Rev 0; 7/07  
High-Voltage OVP with Battery Switchover  
5/MAX4960  
General Description  
Features  
The MAX4959/MAX4960 overvoltage protection con-  
trollers protect low-voltage systems against high-volt-  
age faults of up to +28V. When the input voltage  
exceeds the overvoltage lockout (OVLO) threshold,  
these devices turn off an external pFET to prevent dam-  
age to the protected components. The undervoltage  
lockout (UVLO) threshold holds the external pFET off  
until the input voltage rises to the correct level. An addi-  
tional safety feature latches off the pFET when an incor-  
rect low-power adapter is plugged in.  
o Overvoltage Protection Up to +28V  
2.5% Accurate Externally Adjustable  
OVLO/UVLO Thresholds  
o
o Battery Switchover pFET Control  
o Protection Against Incorrect Power Adapter  
o Low (100µA Typ) Supply Current  
o 25ms Input Debounce Timer  
o 25ms Blanking Time  
The MAX4959/MAX4960 control an external battery  
switchover pFET (P2) (see Figures 4 and 6) that switches  
in the battery when the AC adapter is unplugged. The  
undervoltage and overvoltage trip levels can be adjusted  
with external resistors.  
o 10-Pin (2mm x 2mm) µDFN and 10-Pin µMAX  
Packages  
Ordering Information  
The input is protected against ±±5kV ꢀHM EꢁS when  
bypassed with a ±µF ceramic capacitor to ground. All  
devices are available in a small ±0-pin (2mm x 2mm)  
µSFN and ±0-pin µMAX packages and are specified for  
operation over the extended -40°C to +85°C temperature  
range.  
PIN-  
TOP  
PKG  
PART  
TEMP RANGE  
PACKAGE MARK CODE  
-40°C to +85°C  
MAX4959ELB+  
10 μDFN  
AAO  
—
L1022-1  
U10-1  
MAX4959EUB+* -40°C to +85°C 10 μMAX  
MAX4960ELB+ -40°C to +85°C 10 μDFN  
MAX4960EUB+* -40°C to +85°C 10 μMAX  
+Senotes a lead-free package.  
AAP  
—
L1022-1  
U10-1  
Applications  
Notebooks  
Laptops  
*Future product—Contact factory for availability.  
Camcorders  
Ultra-Mobile PCs  
Pin Configurations  
TOP VIEW  
10  
9
8
7
6
1
2
6
GATE1  
GATE2  
N.C.  
(SOURCE1)  
7
N.C.  
GND  
IN  
3
4
5
8
9
MAX4959  
MAX4960  
MAX4959  
MAX4960  
UVS  
CB  
+
V
DD  
10  
OVS  
1
2
3
4
5
µMAX  
µDFN  
( ) MAX4960 ONLY.  
Typical Operating Circuits appear at end of data sheet.  
________________________________________________________________ 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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