TEA2018A datasheet(3/7 Pages) STMICROELECTRONICS

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ELECTRICAL OPERATING CHARACTERISTICS

Tamb =25

oC, potentials referenced to ground (unless otherwise specified) (see test circuit)

Symbol

Parameter

Min.

Typ.

Max.

Unit

∆VCC+

Hysteresis on VCC+ Threshold

0.7

1.1

1.6

ICC(sb)

Stand-by Supply Current before starting (VCC+< VCC(start))

1.6

Vth(IC)

Current Limitation Threshold Voltage (Pin 3)

-1100 -1000

-880

R(IC)

Collector Current Sensing Input Resistance

1000

Ω

V7(th)

Demagnetization Sensing Threshold

100

125

Demagnetization Sensing Input Current (Pin 7 = 0V)

µA

τmax

Maximum Duty Cycle

Error Amplifier Gain

II+

Error Amplifier Input Current (non-inverting input)

µA

VREF

Internal Reference Voltage

2.3

2.4

2.5

∆VREF

∆T

Reference Voltage Temperature Drift

-4

tOSC

Oscillator Free-running Period ( R = 59k

Ω, C = 1.2nF)

µs

∆fOSC

∆T

Oscillator Frequency Drift with Temperature (VCC+ = +8V)

0.05

∆fOSC

∆VCC

Oscillator Frequency Drift with VCC+ (+8V < VCC+ < +14V)

0.5

%/V

ton(min)

Minimum Conducting Time (Ct = 1nF)

µs

RECOMMENDED OPERATING CONDITIONS

Symbol

Parameter

Min.

Typ.

Max.

Unit

VCC+

Positive Supply Voltage

VCC-

Negative Supply Voltage

-3

Output Current

0.5

foper

Operating Frequency

kHz

8765

TEA2018A

22nF

1.2nF

4.7nF

470nF

22nF

Ω

470

Ω

100

Ω

59k

Ω

TEST CIRCUIT

TEA2018A

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