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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： | 6/13页 |
| 文件大小： | 1058K |
| 代理商： | L4964 |
PIN FUNCTIONS
N
°
Name
Function
1
N.C.
Must not be connected. Leave open circuit.
2
Output
Regulator Output.
3
Supply Voltage
Unregulated Voltage Input. An internal regulator powers the L4964’s internal logic.
4
N.C.
Must not be connected. Leave open circuit.
5
Soft Start
Soft Start Time Constant. A capacitor is connected between this terminal and ground
to define the soft start time constant. This capacitor also determines the average short
circuit output current.
6
Inhibit Input
TTL - Level Remote Inhibit. A logic high level on this input disables the L4964.
7
Sync Input
Multiple L4964’s are synchronized by connecting the pin 7 inputs together and omitting
the oscillator RC network on all but one device.
8
Ground
Common Ground Terminal.
9
Frequency
Compensation
A series RC network connected between this terminal and ground determines the
regulation loop gain characteristics.
10
Feedback
Input
The Feedback Terminal of the Regulation Loop. The output is connected directly to
this terminal for 5.1 V operation ; it is connected via a divider for higher voltages.
11
Oscillator
A parallel RC network connected to this terminal determines the switching frequency.
The pin must be connected to pin 7 input when the internal oscillator is used.
12
Reset Input
Input of the Reset Circuit. The threshold is roughly 5 V. It may be connected to the
beedback point or via a divider to the input.
13
Reset Delay
A capacitor connected between this terminal and ground determines the reset signal
delay time.
14
Reset Output
Open Collector Reset Signal Output. This output is high when the supply is safe.
15
N.C.
Must not be connected. Leave open circuit.
BLOCK DIAGRAM
L4964
2/13
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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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