TL494_15 Datasheet, PDF(5/8 Page) Unisonic Technologies

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TL494_15 Datasheet, PDF (5/8 Pages) Unisonic Technologies – VOLTAGE MODE PWM CONTROL CIRCUIT

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TL494

LINEAR INTEGRATED CIRCUIT

ï® ELECTRICAL CHARACTERISTICS(Cont.)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN TYP MAX UNIT

AMPLIFIER SECTION

Input Offset Voltage

Error VI(OFF) VOUT (pin 3)=2.5V

Input Offset Current

II(OFF) VOUT (pin 3)=2.5V

Input Bias Current

II(BIAS) VOUT (pin 3)=2.5V

0.2

Common-Mode Input Voltage Range Error

VCC=7V ~ 40 V

-0.3 ~

VCC-2

Open-Loop Voltage Amplification

ïVOUT=3V, VOUT=0.5V ~ 3.5V

70 95

Unity-Gain Bandwidth

GBW

800

Common-Mode Rejection Ratio

Error CMRR VCC=40V,TA=25ï°C

65 80

Output Sink Current(pin 3)

IO(SINK) VID=-15mV ~ -5V, V(pin 3)=0.5V 0.3 0.7

Output source Current(pin 3)

IO(SOURCE) VID=15mV ~ -5V, V(pin 3)=3.5V -2

OUTPUT SECTION

Collector off-state current

IC(OFF) VCE=40V, VCC=40V

Emitter off-state Current

IE(OFF) VCC=VC=40V, VE=0

Collector -emitter

Common-emitter

VE=0, IC=200mA

1.1

Saturation Voltage

Emitter-Follower

VC=15V, IE=-200mA

1.5

Output Control Input Current

VIN=VREF

DEAD TIME CONTROL SECTION

Input bias (pin 4)

II(BIAS) VIN=0 ~ 5.25V

-2

Maximum duty cycle, each output

VIN(pin 4)=0

Input threshold Voltage(pin 4)

VTHR Zero duty Cycle

Maximum duty cycle

10 mV

250 nA

1 Î¼A

kHz

100 Î¼A

-100 Î¼A

1.3 V

2.5

3.5 mA

-10 Î¼A

3.3 V

PWM COMPARATOR SECTION

Input Threshold Voltage(pin 3)

VTHR Zero Duty cycle

4 4.5 V

Input Sink Current (pin 3)

II(SINK) V(pin 3)= 0.7V

0.3 0.7

TOTAL DEVICE

Standby Supply Current

VCC =15V

VCC =40V

IST-BY

pin 6 at VREF, all other Inputs and

outputs open

6 10 mA

9 15

Average supply current

V(pin 4)=2V

7.5

SWITCHING CHARACTERISTICS, TA=25ï°C

Output Voltage Rise Time

Output Voltage Fall Time

Common-emitter configuration

100 200 ns

25 100 ns

Output Voltage Rise Time

Output Voltage Fall Time

Emitter-follower configuration

100 200 ns

40 100 ns

Notes: 1. All typical Values except for temperature coefficient are at TA=25ï°C.

2. For conditions shown as MIN or MAX, use appropriate value under recommended operating conditions.

3. Duration of the short-circuit should not exceed one second.

4. Standard deviation is a measure of the statistical distribution the mean as derived from the formula:

UNISONIC TECHNOLOGIES CO., LTD

www.unisonic.com.tw

5 of 8

QW-R103-004. J

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