TEA-2261 ST Microelectronics, TEA-2261 Datasheet - Page 4

• Manufacturer Part Number: TEA-2261
• Description: SWITCH MODE POWER SUPPLY CONTROLLER
• Manufacturer: ST Microelectronics

RECOMMENDED OPERATING CONDITIONS
ELECTRICAL CHARACTERISTICS (T
TEA2260 - TEA2261
4/9
POWER SUPPLY
OSCILLATOR / PWM SECTION
ERROR AMPLIFIER SECTION
INPUT SECTION
CURRENT LIMITATION SECTION
Hyst V
Symbol
Symbol
V
V
V
t
Delta F
I
I
ON
C2/C1
I
CC(start)
CC(over)
I
I
R
C
CC(start)
CC(stop)
CC(max)
BI(max)
I
I
F
T
V
V
V
OUT
OUT
V
A
I
I
OUT
OUT
V
V
F
V
I
I
C1
C2
I
I
V
I
DC2
CC2
BIN
oper
OSC
OSC
BIS
V
amb
CC
SC
BE
REF
F
IM1
IM2
CC
VO
max
C2
IN
ug
IN
IS
IM
+
+
-
-
CC
Power Supply
Positive Output Current (source current)
Negative Output Current (sink current)
Average Positive Output Current
Average Negative Output Current
Operating Frequency
Input Pulses Amplitude (Pin 2)
Oscillator Resistor Range
Oscillator Capacitor Range
Soft-starting Capacitor Range
Overload Integration Capacitor
Ratio C2/C1 (C2 must be
Operating Ambient Temperature
Starting Voltage (V
Stopping Voltage (V
Hysteresis (V
Starting Current (V
Supply Current (V
Overvoltage Threshold on V
Supply Current after Overvoltage Detection (V
Accuracy (R
Maximum Duty Cycle in Primary Regulation Mode
Open Loop Gain
Unity Gain Frequency
Short Circuit Output Current (Pin 7 connected to ground)
E Input Bias Current (Pin 6)
Internal Voltage Reference (connected to error amplifier input and
not directly accessible)
IN Input Threshold (Pin 2)
IS Input Threshold (Pin 1)
IN Input Bias Current
IS Input Bias Current
First Current Limitation Threshold
Second Current Limitation Threshold
Thresholds Difference V
Lock-out Threshold on Pin C2
Capacitor C2 Discharge Current
Capacitor C2 Charge Current
Maximum Input Bias Current (Pin 3)
OSC
CC(start)
= 68k , C
CC
CC
CC
CC
- V
= 12V)
= 9V)
increasing)
decreasing)
CC(Stop)
IM2
Parameter
OSC
- V
C1)
Parameter
CC
amb
)
IM1
= 1nF)
= 25
o
C, V
CC
CC
= 17V)
=12V, unless otherwise specified)
V
0.047
0.047
CC
Min.
0.47
-20
1.5
10
20
1
stop
Min.
2.34
2.25
558
837
9.3
6.4
2.4
0.6
15
26
50
Typ.
2.5
12
1
1
Typ.
10.3
15.7
0.08
2.49
0.85
0.15
2.55
550
600
900
300
7.4
2.9
0.7
7.5
0.3
0.4
0.2
35
10
60
75
10
45
2
V
CC
Max.
100
150
1.2
2.0
0.6
0.6
4.5
4.7
Max.
70
11.3
2.64
2.85
642
963
8.4
1.4
1.2
15
42
70
max
Unit
Unit
kHz
kHz
mA
mA
mA
mA
mV
mV
mV
k
nF
o
dB
%
%
V
A
A
A
A
V
V
V
V
V
V
V
V
V
C
F
F
A
A
A
A
A
A