TL494 Datasheet, PDF (5/6 Pages) Motorola, Inc – SWITCHMODE PULSE WIDTH MODULATION CONTROL CIRCUIT

Pulse-Width-Modulation Control Circuits
TL494
Electrical characteristics over recommended operating free-air temperature range,
Vcc=15V, f=10kHz (unless otherwise noted)
Amplifier section (See Figure 2)
SYMBOL
Input offset voltage
Input offset current
Input bias current
Common-mode input voltage range
Open-loop voltage amplification
Unity-gain bandwidth
Common-mode rejection ratio
Output sink current (pin 3)
Output source current (pin 3)
TEST CONDITIONS
MIN. TYP**. MAX. UNIT
Vo(pin 3)=2.5V
Vo(pin 3)=2.5V
2
10 ㎷
25 250 nA
Vo(pin 3)=2.5V
0.2
1㎂
Vcc = 7V to 40V
-0.3~-2
V
Vo=3V, R_L=2KΩ, Vo=0.5~3.5V
70
95
dB
Vo=0.5~3.5V, R_L=2KΩ
800
kHz
Vo= 40V, T_A= 25^oC
65
80
dB
V_ID=-15mV~-5V, V(_pin3)=0.7V
0.3 0.7
mA
V_ID=15mV~5V, V(_pin3)=3.5V
-2
mA
*For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
** All typical values except for parameter changes with temperature are at TA =25 oC
*** Duration of the short-circuit should not exceed one second.
**** Standard deviation is a measure of the statistical distribution about the mean as derived from the formula.
***** Temperature coefficient of timing capacitor and timing resistor not taken into account.
Output section
PARAMETER
Collector off-state current
Emitter off-state current
Collector-emitter saturation voltage
Common-emitter
Emitter-follower
Output control input current
TEST CONDITIONS
V_CE=40V, Vcc=40V
V_CC=V_C=40V,V_E=0
V_E=0, I_C=200mA
Vc=15V, I_E=-200mA
V_I=Vref
MIN.
TYP*
2
1.1
1.5
MAX. UNIT
100
㎂
-100
1.3
V
2.5
3.5 mA
Dead-time control-section (See Figure 1)
PARAMETER
Input bias current(pin4)
Maximum duty cycle, each output
Input threshold voltage(pin 4)
TEST CONDITIONS
V_I=0 to 5.25V
V_{I (pin 4)}=0, C_T=0.1uF, R_T=12KΩ
Zero duty cycle
Maximum duty cycle
MIN.
0
TYP*
-2
45
3
MAX. UNIT
-10 ㎂
%
3.3 _V
PMW comparator section (See Figure 1)
PARAMETER
Input threshold voltage (pin3)
Input sink current (pin 3)
TEST CONDITIONS
Zero duty cycle
V(pin3) = 0.7V
MIN.
0.3
TYP*
4
0.7
MAX. UNIT
4.5 V
mA
Total device
PARAMETER
Standby supply current
Average supply current
TEST CONDITIONS
Pin 6 at Vref, all other inputs
and outputs open
V_I(pin 4)= 2V
V_CC=15V
V_CC=40V
MIN.
TYP*
6
9
7.5
MAX. UNIT
10
15 mA
Mar. 2006-Rev06
149
HTC