TLS1242, TLS1244

CURRENT-MODE PWM CONTROLLER

WITH POWER-FACTOR CORRECTOR

SLVS161 – MAY 1997

4

POST OFFICE BOX 655303

POST OFFICE BOX 1443

recommended operating conditions

MIN

NOM

MAX

UNIT

Supply voltage, VCC

20

V

Input voltage at CT input

0

5.5

V

Input voltage at FB, ISENS, VSENSE, RMS, SYNC and PKLIM

–0.3

5.5

V

Voltage on output

0

20

V

Supply current, externally limited, ICC

2.5

mA

Average output current, IO

200

mA

Reference output current

–20

mA

Timing capacitor, CT

1

2.2

nF

Oscillator frequency

100

200

kHz

Operating free-air temperature, TA

0

70

°C

Input current at IAC

750

µA

Note 3), RT = 47 k

Ω, CT = 2.2 nF, PKLIM = 1 V, RMS = 1.5 V, IAC = 100 µA, ISENS = 0 V, CAO = 4 V,

reference

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Output voltage

IO = 1 mA,

TA = 25°C

4.95

5

5.05

V

Line regulation

VCC = 12 V to 20 V

6

20

mV

Load regulation

IO = 1 mA to 20 mA

6

25

mV

Temperature coefficient of output voltage

0.2

0.4

mV/

°C

Output voltage, worst-case variation

VCC = 12 V to 20 V,

IO = 1 mA to 20 mA

4.9

5.1

V

Output noise voltage

f = 10 Hz to 10 kHz,

TA = 25°C

50

100

µV

Output voltage, long-term drift

After 1000 at TA = 125°C

5

25

mV

Short-circuit output current

–30

–100

–180

mA

oscillator

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Oscillator frequency

TA = 125°C

43

48

53

kHz

Frequency change with supply voltage

VCC = 12 V to 20 V

1%

2%

Frequency change with temperature

TA = 0°C to 70°C

1%

Peak-to-peak amplitude voltage at CT

4.6

V

Valley-point voltage

TA = 25°C

1.15

1.65

V

current sense comparator

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Voltage amplification

See Note 2,

See Note 3

2.85

3

3.15

V/V

Current-sense comparator threshold voltage

COMP at 5 V,

See Note 2

0.9

1

1.1

V

Supply voltage rejection ratio

VCC = 12 V to 20 V, See Note 2

70

dB

Input bias current

–2

–10

µA

Delay time to output

150

300

ns