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參數(shù)資料
| 型號： | LM5025AMTC |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Active Clamp Voltage Mode PWM Controller |
| 中文描述： | 3 A SWITCHING CONTROLLER, 650 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | TSSOP-16 |
| 文件頁數(shù)： | 2/16頁 |
| 文件大小： | 698K |
| 代理商： | LM5025AMTC |
Connection Diagram
20107416
16-Lead TSSOP, LLP
Ordering Information
Order Number
LM5025AMTC
LM5025AMTCX
LM5025ASD
LM5025ASDX
Package Type
TSSOP-16
TSSOP-16
LLP-16
LLP-16
NSC Package Drawing
MTC-16
MTC-16
SDA-16A
SDA-16A
Supplied As
92 Units per anti-static tube
2500 Units on Tape and Reel
Available Soon
Available Soon
Pin Description
PIN
1
NAME
V
IN
DESCRIPTION
APPLICATION INFORMATION
Input to start-up regulator. Input range 13V to 90V,
with transient capability to 105V.
An external RC circuit from Vin sets the ramp slope.
This pin is discharged at the conclusion of every
cycle by an internal FET, initiated by either the
internal clock or the V*Sec Clamp comparator.
Source Input Voltage
2
RAMP
Modulator ramp signal
3
CS1
Current sense input for cycle-by-cycle limiting If CS1 exceeds 0.5V the outputs will go into
Cycle-by-Cycle current limit. CS1 is held low for
50ns after OUT_A switches high providing leading
edge blanking.
If CS2 exceeds 0.5V the outputs will be disabled and
a softstart commenced. The soft-start capacitor will
be fully discharged and then released with a pull-up
current of 1μA. After the first output pulse (when SS
=1V), the SS charge current will revert back to 20μA.
An external resistor (R
SET
) sets either the overlap
time or dead time for the active clamp output. An
R
SET
resistor connected between TIME and GND
produces in-phase OUT_A and OUT_B pulses with
overlap. An R
SET
resistor connected between TIME
and REF produces out-of-phase OUT_A and OUT_B
pulses with deadtime.
Maximum output current: 10mA Locally decouple
with a 0.1μF capacitor. Reference stays low until the
V
CC
UV comparator is satisfied.
If an auxiliary winding raises the voltage on this pin
above the regulation setpoint, the internal start-up
regulator will shutdown, reducing the IC power
dissipation.
4
CS2
Current sense input for soft restart
5
TIME
Output overlap/Deadtime control
6
REF
Precision 5 volt reference output
7
V
CC
Output from the internal high voltage start-up
regulator. The V
CC
voltage is regulated to
7.6V.
L
www.national.com
2
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM5025AMTC/NOPB | 功能描述:電壓模式 PWM 控制器 100V Forward Active Clamp RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| LM5025AMTCX | 制造商:Texas Instruments 功能描述:Voltage Mode PWM Controller 3A/1A 16-Pin TSSOP T/R |
| LM5025AMTCX/MEY8 | 制造商:Texas Instruments 功能描述: |
| LM5025AMTCX/NOPB | 功能描述:電壓模式 PWM 控制器 RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| LM5025ASD | 功能描述:電壓模式 PWM 控制器 RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
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