參數資料
型號: L4925
廠商: 意法半導體
元件分類: 基準電壓源/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)
文件頁數: 5/8頁
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
相關PDF資料
PDF描述
L4931 Very Low Drop Voltage Regulators with Inhibit(帶禁止低壓差電壓穩(wěn)壓器)
L4936E ADVANCED VOLTAGE REGULATOR
L4936EH ADVANCED VOLTAGE REGULATOR
L4936N DUAL MULTIFUNCTION VOLTAGE REGULATOR
L4936NH DUAL MULTIFUNCTION VOLTAGE REGULATOR
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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 回動電壓(最大值):307 mV 輸出電流:1 A 負載調節(jié):0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格: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 回動電壓(最大值):307 mV 輸出電流:1 A 負載調節(jié):0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格: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 回動電壓(最大值):307 mV 輸出電流:1 A 負載調節(jié):0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20
L4926 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Positive Fixed Voltage Regulator