Recherchez avec le numéro de pièce ainsi que le fabricant ou la description
The TL494 is a fixed–frequency pulse width modulation control circuit, incorporating the primary building blocks required for the control of a switching power supply. (See Figure 1.) An internal–linear sawtooth oscillator is frequency– programmable by two external components, RT and CT. The approximate oscillator frequency is determined by: fosc ≈ 1.1 RT • C.
h transistor) (Note 1) Amplifier Input Voltage Range Power Dissipation @ TA ≤ 45°C Thermal Resistance, Junction
–to
–Ambient Operating Junction Temperature Storage Temperature Range Operating Ambient Temperature Range TL494C TL494I Derating Ambient Temperature
NOTE:
+ Error 1 Amp
–
+ 2 Error Amp
– VCC 5.0 V REF
Symbol VCC VC1, VC2 IC1, IC2 VIR PD RθJA TJ Tstg TA
TL494C 42 42 500
TL494I
Unit V V mA V mW °C/W °C °C °C
Compen/PWN Comp Input 3 Deadtime Control 4 CT 5 RT 6
≈ 0.1 V
11 C2
Q2
Ground 7
10 E2
Q1
–0.3 to +42 1000 80 125
–55 to +125 0 to +70
– 25 to +85
C1 8
9 E1
(Top View)
.
TL494 - UTC
The UTC TL494 incorporates all the functions required in the construction of a pulse-width modulation switching circuit.
TL494 - ON Semiconductor
Switch mode Pulse Width Modulation Control Circuit TL494, NCV494 The TL494 is a fixed frequency, pulse width modulation .
TL494 - ART CHIP
TL494 SMPS Controller www.artschip.com 1 TL494 SMPS Controller www.artschip.com 2 TL494 SMPS Controller www.artsc.
TL494 - Fairchild Semiconductor
The TL494 is used for the control circuit of the PWM switching regulator. The TL494 consists of 5V reference voltage cir.
TL494 - HTC Korea
The TL494 incorporate on a single monolithic chip all the functions required in the construction of a pulse-width-modu.
TL494 - Texas Instruments
The TL494 device incorporates all the functions required in the construction of a pulse-widthmodulation (PWM) control ci.
| No. | Partie # | Fabricant | Description | Fiche Technique |
|---|---|---|---|---|
| 1 | TL494B |
ON Semiconductor |
Switch mode Pulse Width Modulation Controller |
|
| 2 | TL494BDG |
ON Semiconductor |
Switch mode Pulse Width Modulation Controller |
|
| 3 | TL494C |
ON Semiconductor |
Switch mode Pulse Width Modulation Controller |
|
| 4 | TL494C |
Texas Instruments |
Pulse-Width-Modulation Controller |
|
| 5 | TL494CD |
Texas Instruments |
Pulse-Width-Modulation Controller |
|
| 6 | TL494CDG |
ON Semiconductor |
Switch mode Pulse Width Modulation Controller |
|
| 7 | TL494CN |
ON Semiconductor |
Switch mode Pulse Width Modulation Controller |
|
| 8 | TL494CN |
Texas Instruments |
Pulse-Width-Modulation Controller |
|
| 9 | TL494D |
HTC |
Pulse-Width-Modulation Controller |
|
| 10 | TL494I |
ON Semiconductor |
Switch mode Pulse Width Modulation Controller |
|
| 11 | TL494I |
Texas Instruments |
Pulse-Width-Modulation Controller |
|
| 12 | TL494IN |
ON Semiconductor |
Switch mode Pulse Width Modulation Controller |
|