- 您现在的位置：买卖IC网 > PDF目录15335 > LTC2910CGN#TRPBF (Linear Technology)IC VOLT MON OCTAL 16-SSOP PDF资料下载
参数资料
| 型号： | LTC2910CGN#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 11/16页 |
| 文件大小： | 0K |
| 描述： | IC VOLT MON OCTAL 16-SSOP |
| 标准包装： | 2,500 |
| 类型： | 多压监控器 |
| 监视电压数目： | 8 |
| 输出： | 开路漏极或开路集电极 |
| 复位： | 高有效/低有效 |
| 复位超时： | 最小为 6 ms |
| 电压 - 阀值： | 8 种可选阀值组合 |
| 工作温度： | 0°C ~ 70°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) |
LTC2910
APPLICATIONS INFORMATION
the desired delay time as a function of the value of the
timer capacitor. The TMR pin must have a minimum of
10pF or be tied to V CC . For long timeout periods, the only
limitation is the availability of a large value capacitor with
low leakage. Capacitor leakage current must not exceed
the minimum TMR charging current of 1.3μA. Tying the
TMR pin to V CC bypasses the timeout period.
Undervoltage Lockout
When V CC falls below 2V, the LTC2910 asserts an
undervoltage lockout (UVLO) condition. During UVLO, RST
is asserted and pulled low and RST is pulled high. When
V CC rises above 2V, RST and RST follow the same timing
procedure as an undervoltage condition on any input.
Shunt Regulator
The LTC2910 has an internal shunt regulator. The V CC pin
operates as a direct supply input for voltages up to 6V.
In this range, the quiescent current of the device remains
below a maximum of 100μA. For V CC voltages higher than
6V, the pin functions as a shunt regulator and must have a
resistance R Z between the supply and the V CC pin to limit
the current to no greater than 10mA.
When selecting this resistance value, choose an appropriate
location on the I-V curve shown in the Typical Performance
Characteristics to accommodate any variations in V CC due
to changes in current through R Z .
RST/ RST Output Characteristics
The DC characteristics of the RST and RST pull-up and
pull-down strength are shown in the Typical Performance
Characteristics. Each has a weak internal pull-up to V CC and
a strong pull-down to ground. This arrangement allows
each pin to have open-drain behavior while possessing
several other bene?cial characteristics. The weak pull-up
eliminates the need for an external pull-up resistor when
the rise time on this pin is not critical. On the other hand,
the open drain con?guration allows for wired-OR connec-
tions and is useful when more than one signal needs to
pull down on the RST or RST lines. V CC of 1V guarantees
At V CC = 1V, the weak pull-up current on RST is barely
turned on. Therefore, an external pull-up resistor of no more
than 100k is recommended on the RST pin if the state and
pull-up strength of the RST pin is crucial at very low V CC .
Note however, by adding an external pull-up resistor, the
pull-up strength on the RST pin is increased. Therefore,
if it is connected in a wired-OR connection, the pull-down
strength of any single device must accommodate this ad-
ditional pull-up strength.
Output Rise and Fall Time Estimation
The RST and RST outputs have strong pull-down capabil-
ity. The following formula estimates the output fall time
(90% to 10%) for a particular external load capacitance
(C LOAD ):
t FALL ≈ 2.2 ? R PD ? C LOAD
where R PD is the on-resistance of the internal pull-down
transistor, typically 50Ω at V CC > 1V, and at room tem-
perature (25°C). C LOAD is the external load capacitance
on the pin. Assuming a 150pF load capacitance, the fall
time is 16.5ns.
The rise time on the RST and RST pins is limited by a
400k internal pull-up resistance to V CC . A similar formula
estimates the output rise time (10% to 90%) at the RST
and RST pins:
t RISE ≈ 2.2 ? R PU ? C LOAD
where R PU is the pull-up resistance.
Disable
The LTC2910 allows disabling the RST and RST outputs
via the DIS pin. Pulling DIS high forces both outputs to
remain unasserted, regardless of any faults that occur
on the inputs. However, if a UVLO condition occurs, RST
asserts and pulls low, RST asserts and pulls high, but the
timeout function is bypassed. RST pulls high and RST pulls
low as soon as the UVLO condition is cleared.
DIS has a weak 2μA (typical) internal pull-down current
guaranteeing normal operation with the pin left open.
a maximum V OL = 0.15V.
2910fc
11
相关PDF资料 |
PDF描述 |
|---|---|
| VI-2W3-EW-F2 | CONVERTER MOD DC/DC 24V 100W |
| GEM44DRYF | CONN EDGECARD 88POS DIP .156 SLD |
| EMM12DSEI | CONN EDGECARD 24POS .156 EYELET |
| LT1242IS8#PBF | IC REG CTRLR ISO PWM CM 8-SOIC |
| LTC693CN | IC MPU SUPERVISORY CIRCUIT 16DIP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC2910HDHC#PBF | 功能描述:IC VOLT MON OCTAL 16-DFN 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 |
| LTC2910HDHC#TRPBF | 功能描述:IC VOLT MON OCTAL 16-DFN 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 |
| LTC2910HGN#PBF | 功能描述:IC VOLT MON OCTAL 16-SSOP 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 |
| LTC2910HGN#TRPBF | 功能描述:IC VOLT MON OCTAL 16-SSOP 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 |
| LTC2910IDHC#PBF | 功能描述:IC VOLT MON OCTAL 16-DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 其它有关文件:STM6905 View All Specifications 标准包装:1 系列:- 类型:多压监控器 监视电压数目:5 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:2.188V，2.955V，可调，可调，可调 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-TSSOP，8-MSOP（0.118"，3.00mm 宽） 供应商设备封装:8-TSSOP 包装:Digi-Reel® 产品目录页面:1197 (CN2011-ZH PDF) 其它名称:497-8728-6 |
发布紧急采购，3分钟左右您将得到回复。