TEA2019 Просмотр технического описания (PDF) - STMicroelectronics
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TEA2019 Datasheet PDF : 7 Pages
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TEA2019
THERMAL DATA
Symbol
Rth (j-a)
Parameter
Junction-ambient Thermal Resistance
Value
80
Unit
°C/W
ELECTRICAL OPERATING CHARACTERISTICS
Tamb = + 25oC, potentials referenced to ground (unless otherwise specified)
Symbol
V+CC
VCC
VCC(start)
VCC(stop)
∆ V+CC
ICC(sb)
Vth (Ic)
R(Ic )
IS
τmax
AV
I+I
V(REF)
∆V(REF)
∆T
TOSC
∆fOSC
∆T
∆fOSC
∆VCC
ton(min)
Parameter
Positive Supply Voltage
Negative Supply Voltage
Minimum positive supply voltage required for starting (V+CC rising)
Minimum positive voltage below which device stops operating (V+CC falling)
Hysteresis on V+CC Threshold
Standby Supply Current Before Starting [V+CC < VCC(start)]
Current Limitation Threshold Voltage (pin 12)
Collector Current Sensing Input Resistance
Demagnetization Sensing Threshold
Demagnetization Sensing Input Current (pin 5 grounded)
Maximum Duty Cycle
Error Amplifier Gain
Error Amplifier Input Current (non-inverting input) (pin 6)
Internal Reference Voltage
Reference Voltage Temperature Drift
Oscillator Free-running Period ( R = 59kΩ, C = 1.5nF)
Oscillator Frequency Drift with Temperature (V+CC = + 8V)
Oscillator Frequency Drift with V+CC (+ 8V < V+CC < + 14V)
Minimum Conducting Time (Ct = 1nF)
Min .
6.6
–1
4.2
0.7
–1100
75
70
2.3
Typ.
8
–3
6
4.9
1.1
1
–1000
1000
100
1
80
50
2
2.4
10–4
60
65
0.05
0.5
2
Max.
15
–5
6.6
5.6
1.6
1.6
–880
125
2.5
70
Unit
V
V
V
V
V
mA
mV
Ω
mV
µA
%
µA
V
V/°C
µs
%/°C
%/V
µs
SYNCHRONIZATION INPUT (pin 7)
Symbol
V7pp
R(7)
Parameter
Peak to Peak Sawtooth Voltage
Input Impedance
PLL CHARACTERISTICS (see Test Circuit)
Symbol
∆T
Parameter
Frequency Sensitivity
Capture Range (TOSC = 64µs Typ.)
TSYN max - TOSC
SATURATION SENSING (pin 4)
Symbol
V(4)
I(4)
Input Threshold
Input Current (V4 > 3.2V)
Input Internal Resistance
Parameter
TOSC - TSYN min
RECOMMENDED OPERATING CONDITIONS
Symbol
V+CC
VCC
IO
Foper
Positive Supply Voltage
Negative Supply Voltage
Output Current
Operating Frequency
Parameter
Min.
Typ.
0.5
20
Max. Unit
2.5 V
kΩ
Min.
5.5
4.5
Typ.
100
8
8
Max.
Unit
Hz/µA
µs
µs
Min.
50
Typ.
3.2
1
Max. Unit
V
µA
kΩ
Min.
Typ.
8
3
30
Max.
0.5
Unit
V
V
A
kHz
3/7
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