- 您现在的位置：买卖IC网 > PDF目录97994 > L4974A (STMICROELECTRONICS) 5.5 A SWITCHING REGULATOR, 200 kHz SWITCHING FREQ-MAX, PDIP20 PDF资料下载
参数资料
| 型号： | L4974A |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | 5.5 A SWITCHING REGULATOR, 200 kHz SWITCHING FREQ-MAX, PDIP20 |
| 封装： | POWER, PLASTIC, DIP-20 |
| 文件页数： | 22/22页 |
| 文件大小： | 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
相关PDF资料 |
PDF描述 |
|---|---|
| L4976 | 2.5 A SWITCHING REGULATOR, 300 kHz SWITCHING FREQ-MAX, PDIP8 |
| L4976D013TR | 2.5 A SWITCHING REGULATOR, 300 kHz SWITCHING FREQ-MAX, PDSO16 |
| L4977A | 11 A SWITCHING REGULATOR, 500 kHz SWITCHING FREQ-MAX, PZFM15 |
| L4978D013TR | 3.5 A SWITCHING REGULATOR, 300 kHz SWITCHING FREQ-MAX, PDSO16 |
| L4978 | 3.5 A SWITCHING REGULATOR, 300 kHz SWITCHING FREQ-MAX, PDIP8 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 制造商全称:STMicroelectronics 功能描述:5A SWITCHING REGULATOR |
| L4975A | 功能描述:直流/直流开关调节器 5.1 to 40V Step-Down RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| L4975A | 制造商:STMicroelectronics 功能描述:SWITCHING REG 5A 4975 MULTIWATT15 |
发布紧急采购，3分钟左右您将得到回复。