參數(shù)資料
型號(hào): L4925
廠商: 意法半導(dǎo)體
元件分類(lèi): 基準(zhǔn)電壓源/電流源
英文描述: Very Low Drop Voltage Regulator(低壓差穩(wěn)壓器)
中文描述: 非常低壓降穩(wěn)壓器(低壓差穩(wěn)壓器)
文件頁(yè)數(shù): 5/8頁(yè)
文件大?。?/td> 77K
代理商: L4925
RESET CIRCUIT
The block circuit diagram of the reset circuit is
shown in Figure 3. The reset circuit supervises
the output voltage. The reset threshold of 4.5V is
defined with the internal reference voltage and
standby outputdivider.
The reset pulse delay time t
RD
, is defined with the
charge time of an externalcapacitor C
T
:
t
RD
=
C
T
x 2V
2
μ
A
The reaction time of the reset circuit originates
from the discharge time limitation of the reset ca-
pacitorC
T
and it is proportionalto the value of C
T
.
The reaction time of thereset circuit increasesthe
noise immunity.Standby output voltage drops be-
low the reset threshold only a bit longer than the
reaction time results in a shorter reset delay time.
The nominal reset delay time will be generated for
standby output voltage drops longer than approxi-
mately 50
μ
s. The typical reset output waveforms
are shownin Figure4.
Figure 3
Figure 4
L4925
5/8
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L4925H 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Positive Fixed Voltage Regulator
L4925L 功能描述:低壓差穩(wěn)壓器 - LDO V Low-Drop Volt Reg RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓(最大值):307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
L4925PD 功能描述:低壓差穩(wěn)壓器 - LDO 5V 0.5A w/Reset RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓(最大值):307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
L4925PD013TR 功能描述:低壓差穩(wěn)壓器 - LDO 5V 0.5A w/Reset RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓(最大值):307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
L4926 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Positive Fixed Voltage Regulator