TK75003 Ver la hoja de datos (PDF) - Toko America Inc

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Fabricante

TK75003

PWM CONTROLLER

Toko America Inc  

TK75003

ABSOLUTE MAXIMUM RATINGS

Supply Voltage (Low Impedance Source) ................ 16 V

Supply Voltage (ICC < 30 mA) ...................... Self Limiting

Power Dissipation (Note 1) ................................ 825 mW

Output Energy (Capacitive Load) .............................. 5 µJ

CT and FB Pins ........................................................ 16 V

Junction Temperature ........................................... 150 °C

Storage Temperature Range ................... -55 to +150 °C

Operating Temperature Range ...................-20 to +80 °C

Extended Temperature Range ................... -40 to +85 °C

Lead Soldering Temperature (10 s) ...................... 235 °C

TK75003 ELECTRICAL CHARACTERISTICS

Test Conditions: VCC = 13 V, CCC = 4.7 µF, CT = 800 pF, CDRV = 1000 pF, TA = Tj = Full Operating Temperature Range.

Typical numbers apply at TA = 25 °C, unless otherwise specified.

SYMBOL

PARAMETER

TEST CONDITIONS

MIN TYP MAX UNITS

ICC(START) Start-up Supply Current

Current Source to VCC Pin

0.5 1.0 mA

ICC(ON)

Operating Supply Current

14.5 19.0 mA

VCC(ON)

UVLO Voltage ON

VCC Sweeps Upward, (Note 3)

12.5 14.5 16.0 V

VCC(OFF) UVLO Voltage OFF

VCC Sweeps Downward

9.0 10.5 12.0 V

VHYST

UVLO Hysteresis

2.8 4.0

V

VCC(CLAMP) Internal Clamp Voltage

ICC = 25 mA, (Note 3)

16.0 17.5 19.0 V

OSCILLATOR SECTION (CT PIN)

fDRV

Frequency at DRV Pin

TA = Tj = 25 ° C

TA = Tj = Full Range (-20 to 80 ° C)

90 100 110 kHz

80

115 kHz

VCT(PK)

Peak Voltage

2.5 3.2 3.9

V

VCT(VL)

Valley Voltage

1.1

V

ICT(DIS)

Discharge Current

1.0 1.8 3.0 mA

CT(MAX)

Maximum Timing Capacitance

4.7

nF

CURRENT DETECTOR, FEEDBACK AND FREQUENCY REDUCTION SECTIONS (FB PIN)

VCCD

VOCD

t

FB,OC,PD

tFB,CC,PD

iSC(PK)

Current Control Detector

Reference Voltage

TA = Tj = 25 ° C

TA = Tj = Full Range (-20 to 80 ° C)

0.950 0.980 1.010 V

0.925

1.035 V

Overcurrent Detector

Reference Voltage

TA = Tj = 25 ° C

TA = Tj = Full Range (-20 to 80 ° C)

1.320 1.350 1.380 V

1.305

1.395 V

Propogation Delay to DRV Pin V Steps from 0 to 2 V

FB

60 130 ns

Propogation Delay to DRV Pin VFB Steps from 0 to 1.20 V, (Note 4)

80 180 ns

Slope Compensation Peak

Current

VCT = VCT(PK), TA = Tj = 25 ° C, (Note 2) -245 -200 -155 µA

iSC(VL)

Slope Compensation Valley

Current

VCT = VCT(VL), TA = Tj = 25 ° C, (Note 2) -65 -40 -15

µA

iSC(PK-VL)

Slope Compensation Peak to

Valley

VCT = VCT(VL), TA = Tj = 25 ° C, (Note 2)

-200

-160

-120

µA

Page 2

January 1999 TOKO, Inc.

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