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参数资料
| 型号： | L4964 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | 4 A SWITCHING REGULATOR, 120 kHz SWITCHING FREQ-MAX, PZFM15 |
| 封装： | VERTICAL, PLASTIC, MULTIWATT-15 |
| 文件页数： | 2/13页 |
| 文件大小： | 1058K |
| 代理商： | L4964 |
APPLICATION INFORMATION
CHOOSING THE INDUCTOR AND CAPACITOR
The input and output capacitors of the L4964 must
have a low ESR and low inductance at high current
ripple.
Preferably, the inductor should be a toroidal type or
wound on a Moly-Permalloy nucleus.Saturation
must not occur at current levels below 1.5 times the
current limiter level. MPP nuclei have very soft satu-
ration characteristics.
L =
(Vi Vo) V0
Vi f
IL
, C =
(Vi Vo) V0
8L f
2 Vo
IL = Inductance current ripple
Vo = Output ripple voltage
Figure 13 : Typical Application Circuit.
SUGGESTED INDUCTOR (L1)
Core Type
No
Turns
Wire
Gauge
(mmm)
Air
Gap
(mm)
Magnetics 58930 – A2MPP
43
1.0
–
Thomson GUP 20 x 16 x 7
50
0.8
0.7
Siemens EC 35/17/10
(B6633& – G0500 – X127)
40
2 x 0.8
–
VOGT 250
H Toroidal Coil, Part Number
5730501800
Resistor Values for Standard Output Volt-
ages
V0
R8
R7
12 V
15 V
18 V
4.7 k
4.7 k
4.7 k
6.2 k
9.1 k
12 k
L 4964
C7, C8 : EKR (ROE)
Figure 14 : P.C. Board and Component Layout of the Circuit of Fig. 13 (1:1 scale)
L4964
10/13
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相关代理商/技术参数 |
参数描述 |
|---|---|
| L4964_03 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:HIGH CURRENT SWITCHING REGULATOR |
| L4964HT | 功能描述:直流/直流开关调节器 5.1 to 28V 4.0 Amp 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 |
| L4969 | 功能描述:低压差稳压器 - LDO Triple w/Lo-Spd Tran RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| L4969013TR | 功能描述:低压差稳压器 - LDO Triple w/Lo-Spd Tran RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| L4969D | 功能描述:线性稳压器 - 标准 Triple w/Lo-Spd Tran RoHS:否 制造商:STMicroelectronics 输出类型: 极性: 输出电压:1.8 V 输出电流:150 mA 负载调节: 最大输入电压:5.5 V 线路调整率: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOT-323-5L |
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