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參數(shù)資料
| 型號(hào)： | TDA4700 |
| 廠商： | SIEMENS A G |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Control IC for Single-Ended and Push-Pull Switched-Mode Power Supplies SMPS |
| 中文描述： | 0.07 A SWITCHING CONTROLLER, 100 kHz SWITCHING FREQ-MAX, CDIP24 |
| 文件頁數(shù)： | 5/21頁 |
| 文件大小： | 436K |
| 代理商： | TDA4700 |
TDA 4700
TDA 4718
Semiconductor Group
5
Pin Definitions and Functions (TDA 4718)
Circuit Description
Voltage Controlled Oscillator (VCO)
The VCO generates a sawtooth voltage. The duration of the falling edge is determined
by the value of
C
T
. The duration of the rising edge of the waveform and, therefore,
approximately the frequency, is determined by the value of
R
T
. By varying the voltage at
C
filter
, the oscillator frequency can be changed by its rated value. During the fall time, the
VCO provides a trigger signal for the ramp generator, as well as an L signal for a number
of IC parts to be controlled.
Pin
Symbol
Function
1
GND
Ground 0 V
2
3
R
R
C
R
Ramp generator
R
R
Ramp generator
C
R
4
5
I COMP
I SYNC
+ Input comparator K2
Sync. input
6
7
IUV
IOV
Input undervoltage, ON/OFF
Input overvoltage
8
9
–
I
DYN
+
I
DYN
Input dynamic current limitation (–)
Input dynamic current limitation (+)
10
11
+
V
REF
+
V
S
Reference voltage
Supply voltage
12
13
Q 2
Q 1
Output Q2
Output Q1
14
15
Q SYNC
C
soft start
Sync. output
Soft start
16
17
18
R
T
C
filter
C
T
VCO
R
T
Capacitance
VCO
C
T
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TDA4700A | Control IC for Single-Ended and Push-Pull Switched-Mode Power Supplies SMPS |
| TDA4718A | Control IC for Single-Ended and Push-Pull Switched-Mode Power Supplies SMPS |
| TDA4714C | IC for Switched-Mode Power Supplies (SMPS) |
| TDA4716C | IC for Switched-Mode Power Supplies (SMPS) |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA4700A | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:Control IC for Single-Ended and Push-Pull Switched-Mode Power Supplies SMPS |
| TDA4714A | 制造商:Siemens 功能描述: |
| TDA4714C | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:IC for Switched-Mode Power Supplies (SMPS) |
| TDA4716C | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:IC for Switched-Mode Power Supplies (SMPS) |
| TDA4718A | 制造商:Siemens 功能描述:Semiconductor (D.I.P. IC) |
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