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参数资料
| 型号： | LTC2901-2IGN#TR |
| 厂商： | Linear Technology |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | IC MONITOR SUPPLY QUAD 16-SSOP |
| 标准包装： | 2,500 |
| 类型： | 多压监控器 |
| 监视电压数目： | 4 |
| 输出： | 推挽式，图腾柱 |
| 复位： | 低有效 |
| 复位超时： | 最小为 5 ms |
| 电压 - 阀值： | 16 种可选阀值组合 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SSOP |
| 包装： | 带卷 (TR) |
LTC2901
Programmable Quad Supply
Monitor with Adjustable Reset
and Watchdog Timers
FEATURES
DESCRIPTIO
■
■
■
■
■
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: 43 μ A Typ
The LTC ? 2901 is a programmable supply monitor for
systems with up to four supply voltages. One of 16 preset
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.
Guaranteed RST for V CC ≥ 1V
■ 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
■ Power Supply Glitch Immunity
■
■ 16-Lead Narrow SSOP Package
APPLICATIO S
The reset and watchdog delay times are adjustable using
external capacitors. Tight voltage threshold accuracy and
glitch immunity ensure reliable reset operation without
false triggering. The RST output is guaranteed to be in the
correct state for V CC 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.
The 43 μ A supply current makes the LTC2901 ideal for
power conscious systems and it may be configured to
■
■
■
■
■
Desktop and Notebook Computers
Multivoltage Systems
Telecom Equipment
Portable Battery-Powered Equipment
Network Servers
monitor less than four inputs. The parts are available in
the 16-lead narrow SSOP package.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
Patent Pending.
TYPICAL APPLICATIO
Quadruple Supply Monitor (5V, 3.3V, 2.5V, 1.8V)
5V
3.3V
Quadruple Supply Monitor (5V, 3.3V, 2.5V, 1.8V)
10% Undervoltage Monitoring, Watchdog Asserts RST
5V
3.3V
DC/DC
CONVERTER
2.5V
SYSTEM
LOGIC
DC/DC
CONVERTER
2.5V
SYSTEM
LOGIC
1.8V
1.8V
V1
V3
V4
COMP1
R3
10k POWER
GOOD
V1
V3
V4
COMP1
R3
10k POWER
GOOD
COMP2
COMP2
V2
LTC2901-2
COMP3
V2
LTC2901-4
COMP3
C1
0.1 μ F
C2
0.1 μ F
R1
V REF
COMP4
WDI
WDO
C1
0.1 μ F
C2
0.1 μ F
R1
V REF
COMP4
WDI
TOL
5V
59k
1%
R2
40.2k
1%
V PG
GND CRT
C RT
47nF
RST
CWT
C WT
47nF
2901 TA01
t RST = 216ms
t WD = 940ms
59k
1%
R2
40.2k
1%
V PG
GND CRT
C RT
47nF
RST
CWT
C WT
47nF
2901 TA01b
t RST = 216ms
t WD = 940ms
2901fb
1
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| LTC2901-3CGN#TRPBF | 功能描述:IC MONITOR QUAD SUPP PROG 16SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 标准包装:1 系列:- 类型:简单复位/加电复位 监视电压数目:1 输出:开路漏极或开路集电极 复位:高有效 复位超时:- 电压 - 阀值:1.8V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:6-TSOP（0.059"，1.50mm 宽）5 引线 供应商设备封装:5-TSOP 包装:剪切带 (CT) 其它名称:NCP301HSN18T1GOSCT |
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