TEA2261/0

5/11

RECOMMENDED OPERATING CONDITIONS

Symbol

Parameter

Min.

Typ.

Max.

Unit

Power Supply

12

V

Positive Output Current (source current)

1.2

A

Negative Output Current (sink current)

2.0

A

Average Positive Output Current

0.6

A

Average Negative Output Current

0.6

A

Operating Frequency

10

100

kHz

Input Pulses Amplitude (Pin 2)

1.5

2.5

4.5

V

Oscillator Resistor Range

20

150

k

Ω

Oscillator Capacitor Range

0.47

4.7

nF

C1

Soft-starting Capacitor Range

0.047

1

µF

C2

Overload Integration Capacitor

0.047

1

µF

C2/C1

Ratio C2/C1 (C2 must be

≤ C1)

1

Operating Ambient Temperature

-20

70

Symbol

Parameter

Min.

Typ.

Max.

Unit

POWER SUPPLY

9.3

10.3

11.3

V

6.4

7.4

8.4

V

2.4

2.9

V

0.7

1.4

mA

7.5

15

mA

15

15.7

V

26

35

42

mA

OSCILLATOR / PWM SECTION

10

%

50

60

70

%

ERROR AMPLIFIER SECTION

Open Loop Gain

75

dB

Unity Gain Frequency

550

kHz

Short Circuit Output Current (Pin 7 connected to ground)

2

mA

E Input Bias Current (Pin 6)

0.08

µA

Internal Voltage Reference (connected to error amplifier input

and not directly accessible)

2.34

2.49

2.64

V

INPUT SECTION

IN Input Threshold (Pin 2)

0.6

0.85

1.2

V

IS Input Threshold (Pin 1)

0.15

V

IN Input Bias Current

0.3

µA

IS Input Bias Current

0.4

µA

CURRENT LIMITATION SECTION

First Current Limitation Threshold

558

600

642

mV

Second Current Limitation Threshold

837

900

963

mV

300

mV

Lock-out Threshold on Pin C2

2.25

2.55

2.85

V

Capacitor C2 Discharge Current

10

µA

Capacitor C2 Charge Current

45

µA

Maximum Input Bias Current (Pin 3)

0.2

µA

Delta F

⋅

F

------------------------

1