參數(shù)資料
型號(hào)： SC627ULTRT
廠商： Semtech Corporation
英文描述： LED Light Management Unit Charge Pump, 4 LEDs, 700mA Flash LED, Dual LDOs, and SemWireTM Interface
中文描述： LED燈管理股電荷泵，4個(gè)LED，700mA的閃光LED，雙LDO，和SemWireTM接口
文件頁(yè)數(shù)： 15/23頁(yè)
文件大?。?/td> 371K
代理商： SC627ULTRT
SC627
15
Protection Features
The SC627 provides several protection features to
safeguard the device from catastrophic failures. These
features include:
Output Open Circuit Protection
Over-Temperature Protection
Charge Pump Output Current Limit
LDO Current Limit
LED Float Detection
Output Open Circuit Protection
Over-Voltage Protection (OVP) is provided at the VOUT
pin to prevent the charge pump from producing an
excessively high output voltage. In the event of an open
circuit at VOUT, the charge pump runs in open loop and
the voltage rises up to the OVP limit. OVP operation is
hysteretic, meaning the charge pump will momentarily
turn off until V
OUT
is sufficiently reduced. The maximum
OVP threshold is 6.0V, allowing the use of a ceramic
output capacitor rated at 6.3V with no fear of over-voltage
damage.
Over-Temperature Protection
The Over-Temperature (OT) protection circuit helps
prevent the device from overheating and experiencing
a catastrophic failure. When the junction temperature
exceeds 160 °C, the device goes into thermal shutdown
with all outputs disabled until the junction temperature
is reduced. All register information is retained during
thermal shutdown.
Applications Information (continued)
Charge Pump Output Current Limit
The device also limits the charge pump current at the
VOUT pin. When VOUT is shorted to ground, the typical
output current limit is 300mA. The current limiting is
triggered by an output under-voltage lockout below 2V.
The output returns to normal when the short is removed
and VOUT is above 2.5V. Above 2.5V, a typical current
limit of 300mA applies when the FL current sink is off and
a typical current limit of 1A applies when the FL current
sink is on.
LDO Current Limit
The device limits the output currents of LDO1 and LDO2 to
help prevent it from overheating and to protect the loads.
The minimum limit is 200mA, so load current greater than
the rated 100mA can be used with degraded accuracy
and larger dropout without tripping the current limit.
LED Float Detection
Float detect is a fault detection feature of the LED current
sink outputs. If an output is programmed to be enabled
and an open circuit fault occurs at any current sink output,
that output will be disabled to prevent a sustained output
OVP condition from occurring due to the resulting open
loop. Float detect ensures device protection but does
not ensure optimum performance. Unused LED outputs
must be disabled to prevent an open circuit fault from
occurring.
相關(guān)PDF資料
PDF描述
SC635 Charge Pump Flash LED Driver
SC635EVB Charge Pump Flash LED Driver
SC744110 Power Solid State Relay
SC801 Fully Integrated High Currnet Lithium-Ion Battery Charger System
SC801IMLTR Fully Integrated High Currnet Lithium-Ion Battery Charger System
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SC628 功能描述:音頻指示器及警報(bào)器 MED CONTINUOUS 6-28V RoHS:否 制造商:PUI Audio 產(chǎn)品:Indicators 聲壓級(jí):85 dB 音調(diào):Continuous 頻率:2300 Hz +/- 300 Hz 電壓額定值:5 VDC 電流額定值:30 mA 端接類型: 直徑:12 mm 安裝:Through Hole
SC6-28 制造商:WM BERG 功能描述:
SC628 制造商:Mallory Sonalert Products Inc 功能描述:TRANSDUCER PIEZO 2.9KHZ 80DBA 28VDC
SC628-4R 制造商:Mallory Sonalert Products Inc 功能描述:TRANSDUCER, PIEZO, 2.9KHZ, 80DBA, 28VDC; Transducer Function:Alarm; Tones:Continuous; Supply Voltage Min:6V; Supply Voltage Max:28V; Operating Current Max:18mA; Sound Level SPL:80dBA; Resonant Frequency:2.9kHz; External Height:32.6mm;RoHS Compliant: Yes
SC628A 功能描述:音頻指示器及警報(bào)器 MED CONTINUOUS 6-28V RoHS:否 制造商:PUI Audio 產(chǎn)品:Indicators 聲壓級(jí):85 dB 音調(diào):Continuous 頻率:2300 Hz +/- 300 Hz 電壓額定值:5 VDC 電流額定值:30 mA 端接類型: 直徑:12 mm 安裝:Through Hole
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*