TL494CN ON Semiconductor, TL494CN Datasheet - Page 5

• Manufacturer Part Number: TL494CN
• Description: IC PWM VM 16DIP
• Manufacturer: ON Semiconductor
• Series: SWITCHMODE™r

Specifications of TL494CN

• Pwm Type: Voltage Mode
• Number Of Outputs: 1
• Frequency - Max: 200kHz
• Duty Cycle: 50%
• Voltage - Supply: 7 V ~ 40 V
• Buck: No
• Boost: No
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: No
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 16-DIP (0.300", 7.62mm)
• Frequency-max: 200kHz
• Topology: Boost, Buck, Flyback, Forward, Full-Bridge, Half-Bridge, Push-Pull
• Output Voltage: 40 V
• Output Current: 200 mA
• Switching Frequency: 300 KHz
• Duty Cycle (max): 45 %
• Operating Supply Voltage: 15 V
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Fall Time: 40 ns
• Mounting Style: Through Hole
• Rise Time: 100 ns
• Synchronous Pin: No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: TL494CNOS

R
T
Deadtime
Control
Feedback/PWM Comp.
C
T
Deadtime Control
4
6
5
Capacitor C
Error Amp
1
Clock Input
1
Output Q1
Output Q2
Flip−Flop
Flip−Flop
Flip−Flop
2
Control
Emitter
Emitter
Output
T
+
−
1
Q
Q
0.7mA
Oscillator
0.12V
0.7V
Comparator Input
Feedback PWM
3
Figure 1. Representative Block Diagram
−
+
−
+
Deadtime
Comparator
This device contains 46 active transistors.
PWM
Comparator
Figure 2. Timing Diagram
2
−
+
TL494, NCV494
http://onsemi.com
15
Error Amp
2
16
5
Lockout
UV
D
Ck
Flip−
Flop
Q
Q
3.5V
−
+
−
+
Output Control
Output
4.9V
Ref.
14
13
Reference
Regulator
7
Gnd
Q1
Q2
8
9
11
10
12
V
CC
V
CC