參數(shù)資料
型號(hào)： L4974A
廠商： STMICROELECTRONICS
元件分類： 穩(wěn)壓器
英文描述： 5.5 A SWITCHING REGULATOR, 200 kHz SWITCHING FREQ-MAX, PDIP20
封裝： POWER, PLASTIC, DIP-20
文件頁(yè)數(shù)： 22/22頁(yè)
文件大?。?/td> 6679K
代理商： L4974A
RESET AND POWER FAIL FUNCTIONS
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
Fig.
V9R
Rising Thereshold Voltage
(pin 9)
Vi = 15 to 50V
V4 = 5.3V
Vref
-130
Vref
-100
Vref
-80
V
mV
7D
V9F
Falling Thereshold Voltage
(pin 9)
Vi = 15 to 50V
V4 = 5.3V
4.77
Vref
-200
Vref
-160
V
mV
7D
V2H
Delay High Threshold Volt.
Vi = 15 to 50V
V4 = 5.3V V9 = V13
4.95
5.1
5.25
V
7D
V2L
Delay Low Threshold Volt.
Vi = 15 to 50V
V4 = 4.7V
V9 = V13
1
1.1
1.2
V
7D
I2SO
Delay Source Current
V4 = 5.3V;
V2 = 3V
30
60
80
A7D
I2SI
Delay Source Sink Current
V4 = 4.7V; V2 = 3V
10
mA
7D
V3S
Output Saturation Voltage
I3 = 15mA; S1 = B V4 = 4.7V
0.4
V
7D
I3
Output Leak Current
V3 = 50V; S1 = A
100
A7D
V4R
Rising Threshold Voltage
V9 = V13
4.955
5.1
5.25
V
7D
V4H
Hysteresis
0.4
0.5
0.6
V
7D
I4
Input Bias Current
1
3
A7D
ELECTRICAL CHARACTERISTICS (continued)
Figure 5 : Test and Evaluation Board Circuit.
TYPICAL PERFORMANCES (using evaluation board) :
n = 83% (Vi = 35V ; Vo = VREF ; Io = 3.5A ; fsw = 100KHz)
Vo RIPPLE = 30mV (at 1A)
Line regulation = 12mV (Vi = 15 to 50V)
Load regulation = 8mV (Io = 1 to 3.5A)
for component values Refer to the fig. 5 (Part list).
L4974A
9/22
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L4974A 制造商:STMicroelectronics 功能描述:IC SWITCHING REG 3.5A 4974 DIP20
L4974AE 制造商:STMicroelectronics 功能描述:
L4975 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5A SWITCHING REGULATOR
L4975A 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 5.1 to 40V Step-Down RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
L4975A 制造商:STMicroelectronics 功能描述:SWITCHING REG 5A 4975 MULTIWATT15
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