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参数资料
| 型号： | LTC2903CS6-B1#TRM |
| 厂商： | Linear Technology |
| 文件页数： | 9/16页 |
| 文件大小： | 0K |
| 描述： | IC QUAD SPLY MONITOR POS SOT23-6 |
| 标准包装： | 1 |
| 类型： | 多压监控器 |
| 监视电压数目： | 4 |
| 输出： | 开路漏极或开路集电极 |
| 复位： | 低有效 |
| 复位超时： | 最小为 140 ms |
| 电压 - 阀值： | 1.593V，2.213V，2.921V，4.425V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-6 |
| 供应商设备封装： | SOT-23-6 |
| 包装： | 剪切带 (CT) |
| 产品目录页面： | 1337 (CN2011-ZH PDF) |
| 其它名称： | LTC2903CS6-B1 LTC2903CS6-B1#TRMCT LTC2903CS6-B1-ND |
LTC2903-1
BLOCK DIAGRA S
(LTC2903-D1, LTC2903-E1)
V1 1
V1
POWER
DETECT
V CC
V1
10 μ A
V2 3
RESET DELAY GENERATOR
6 RST
200ms
DELAY
V3 4
V1
LOW VOLTAGE
PULL-DOWN
MONITORED VOLTAGES
V4 5
V1
V2
D1
3.3V
ADJ
E1
5V
ADJ
BANDGAP
V3
ADJ
ADJ
GND 2
REFERENCE
29031 BD2
V4
ADJ
ADJ
0.5V
APPLICATIO S I FOR ATIO
Power-Up
The LTC2903-1 issues a logic low on the RST output when
an input supply voltage resides below the prescribed
threshold voltage. Ideally, the RST logic output would
When V1, V2 and V3 are ramped simultaneously (for
options A1, B1 and C1 only), the reset pull-down current
increases up to three times the current that may be pulled
with a single input. Figure 1 demonstrates the reset pin
remain low with the input supply voltage down to zero
volts. Most supervisors lack pull-down capability below
1V. The LTC2903-1 power supply supervisors incorporate
a new low voltage pull-down circuit that can hold the RST
line low with as little as 200mV of input supply voltage on
10000
1000
T A = 25 ° C
V RST = 0.3V CC
V1, V2 or V3 (V1 only for options D1 and E1). The pull-down
100
V1 = V2 = V3
V1 ONLY
circuit helps maintain a low impedance path to ground,
reducing the risk of floating the RST node to undetermined
voltages. Such voltages may trigger external logic causing
10
erroneous reset operation(s). Furthermore, a mid-scale
voltage could cause external circuits to operate in the
middle of their voltage transfer characteristic, consuming
1
0
0.2
0.4
0.6
V CC (V)
0.8
1.0
1.2
29031 F01
more quiescent current than normal. These conditions
could cause serious system reliability problems.
Figure 1. RST Pull-Down Current vs V CC
29031f a
9
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC2903CS6-C1 | 制造商:Linear Technology 功能描述:Volt Supervisor Monitor -5.2V/1.8V/3.3V/5V 6-Pin TSOT-23 |
| LTC2903CS6-C1#PBF | 制造商:Linear Technology 功能描述:Volt Supervisor Monitor -5.2V/1.8V/3.3V/5V 6-Pin TSOT-23 |
| LTC2903CS6-C1#TR | 功能描述:IC MONITOR SUPPLY QUAD SOT23-6 RoHS:否 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 |
| LTC2903CS6-C1#TRM | 功能描述:IC QUAD SPLY MONITOR NEG SOT23-6 RoHS:否 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 |
| LTC2903CS6-C1#TRMPBF | 功能描述:IC QUAD SPLY MONITOR NEG SOT23-6 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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