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LTC2901-3IGN#TRPBF PDF预览

LTC2901-3IGN#TRPBF

更新时间： 2024-02-02 18:56:56
品牌 Logo 应用领域
凌特 - Linear 光电二极管
页数 文件大小 规格书
16页 185K
描述
LTC2901 - Programmable Quad Supply Monitor with Adjustable Reset and Watchdog Timers; Package: SSOP; Pins: 16; Temperature Range: -40°C to 85°C

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中文翻译

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LTC2901-3IGN#TRPBF 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Active包装说明：SSOP,
针数：16Reach Compliance Code：compliant
风险等级：5.12可调阈值：YES
模拟集成电路 - 其他类型：POWER SUPPLY MANAGEMENT CIRCUITJESD-30 代码：R-PDSO-G16
JESD-609代码：e3长度：4.8895 mm
湿度敏感等级：1信道数量：4
功能数量：1端子数量：16
最高工作温度：70 °C最低工作温度：
封装主体材料：PLASTIC/EPOXY封装代码：SSOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, SHRINK PITCH
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：1.75 mm标称供电电压 (Vsup)：5 V
表面贴装：YES技术：CMOS
温度等级：COMMERCIAL端子面层：Matte Tin (Sn)
端子形式：GULL WING端子节距：0.635 mm
端子位置：DUAL处于峰值回流温度下的最长时间：30
宽度：3.899 mmBase Number Matches：1

LTC2901-3IGN#TRPBF 数据手册

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LTC2901  
Programmable Quad Supply  
Monitor with Adjustable Reset  
and Watchdog Timers  
U
FEATURES  
DESCRIPTIO  
The LTC®2901 is a programmable supply monitor for  
systemswithuptofoursupplyvoltages. Oneof16preset  
or adjustable voltage monitor combinations can be se-  
lected using an external resistor divider connected to the  
program pin. The preset voltage thresholds are accurate  
to 1.5% over temperature. All four voltage comparator  
outputs are connected to separate pins for individual  
supply monitoring.  
■
Simultaneously Monitors Four Supplies  
16 User Selectable Combinations of 5V, 3.3V, 3V,  
■
2.5V, 1.8V, 1.5V and/or Adj Voltage Thresholds  
Guaranteed Threshold Accuracy: 1.5% of  
■
Monitored Voltage Over Temperature  
Selectable Supply Tolerance: 5% and 10% Below  
■
Monitored Voltage (LTC2901-3/LTC2901-4)  
Low Supply Current: 43μA Typ  
Adjustable Reset Time  
Adjustable Watchdog Time  
Open-Drain RST Output (LTC2901-1/LTC2901-3)  
Push-Pull RST Output (LTC2901-2/LTC2901-4)  
Individual Nondelayed Monitor Output for Each Supply  
■
■
The reset and watchdog delay times are adjustable using  
externalcapacitors.Tightvoltagethresholdaccuracyand  
glitch immunity ensure reliable reset operation without  
falsetriggering.TheRSToutputisguaranteedtobeinthe  
correct state for VCC down to 1V. The LTC2901-1/  
LTC2901-3 features an open-drain RST output, while the  
LTC2901-2/LTC2901-4 has a push-pull RST output.  
■
■
■
■
■
Power Supply Glitch Immunity  
Guaranteed RST for VCC ≥ 1V  
■
■
16-Lead Narrow USSOP Package  
The 43μA supply current makes the LTC2901 ideal for  
power conscious systems and it may be configured to  
monitor less than four inputs. The parts are available in  
the 16-lead narrow SSOP package.  
APPLICATIO S  
■
Desktop and Notebook Computers  
Multivoltage Systems  
Telecom Equipment  
Portable Battery-Powered Equipment  
■
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
Patent Pending.  
■
■
■
Network Servers  
U
TYPICAL APPLICATIO  
Quadruple Supply Monitor (5V, 3.3V, 2.5V, 1.8V)  
10% Undervoltage Monitoring, Watchdog Asserts RST  
Quadruple Supply Monitor (5V, 3.3V, 2.5V, 1.8V)  
5V  
5V  
3.3V  
3.3V  
DC/DC  
CONVERTER  
SYSTEM  
LOGIC  
DC/DC  
CONVERTER  
SYSTEM  
LOGIC  
2.5V  
1.8V  
2.5V  
1.8V  
R3  
10k  
R3  
10k  
POWER  
GOOD  
POWER  
GOOD  
V3  
V4  
V3  
V4  
V1  
V2  
V
V1  
V2  
V
COMP1  
COMP2  
COMP3  
COMP4  
WDI  
COMP1  
COMP2  
COMP3  
COMP4  
WDI  
LTC2901-2  
LTC2901-4  
C2  
C2  
0.1μF  
0.1μF  
C1  
C1  
0.1μF  
REF  
REF  
0.1μF  
WDO  
TOL  
5V  
R1  
59k  
1%  
R1  
59k  
1%  
V
PG  
V
PG  
RST  
RST  
2901 TA01  
2901 TA01b  
GND CRT  
CWT  
GND CRT  
CWT  
R2  
40.2k  
1%  
R2  
40.2k  
1%  
t
t
= 216ms  
= 940ms  
t
t
= 216ms  
= 940ms  
RST  
WD  
RST  
WD  
C
RT  
47nF  
C
WT  
47nF  
C
C
WT  
47nF  
RT  
47nF  
2901fb  
1
1234567...16

中文翻译

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