BD4271HFP-C
带看门狗计时器复位 550mA LDO稳压器
BD4271HFP-C
BD4271HFP-C
带看门狗计时器复位 550mA LDO稳压器
BD4271HFP-C是45V高耐压稳压器，内置监视其输出的复位电路(RESET)及看门狗计时器(WDT) 。输出电流能力550mA，但待机电流很低，适合用来降低系统的消耗电流。有对输出进行ON/OFF的CTL引脚，将CTL设为L可关闭输出，且能减少电流消耗。稳压器输出低于4.65V(Typ)时输出复位信号。复位信号的复位延迟时间、看门狗计时器监视时间可通过外接电容器进行调整。
主要规格
功能安全:
类别 : FS supportive
A product that has been developed for automotive use and is capable of supporting safety analysis with regard to the functional safety.
特性：
ch
1
Vin(Min.)[V]
5.5
Vin(Max.)[V]
45
Iout(Max.)[A]
0.55
Vout Accuracy
±2.0%
Circuit Current[mA]
0.075
Dropout Voltage (Typ.)[V]
0.2(Io=300mA)
Ripple Rejection [dB]
60
Load Regulation[mV]
10
Shutdown Function
Yes
Thermal Shut-down
Yes
Over Current Protection
Yes
Under Voltage Lock Out
Yes
Discharge Function
Yes
Operating Temperature (Min.)[°C]
-40
Operating Temperature (Max.)[°C]
150
Common Standard
AEC-Q100 (Automotive Grade)
特点：
- Low ESR ceramic capacitors applicable for output
- Low drop voltage: PDMOS output transistor
- Power on and under-voltage reset
- Programmable reset delay and watchdog time by external capacitor
