KA3S0680 데이터 시트보기 (PDF) - Fairchild Semiconductor

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KA3S0680

Fairchild Power Switch(FPS)

Fairchild Semiconductor 

KA3S0680RB/KA3S0680RFB

Electrical Charcteristics (SFET part) (Continued)

(Ta = 25°C unless otherwise specified)

Characteristic

Symbol

UVLO SECTION

Start threshold voltage

VSTART

Stop operating voltage

VSTOP

OSCILLATOR SECTION

Initial accuracy

Frequency change with temperature (2)

FOSC

∆F/∆T

Maximum duty cycle

DMAX

FEEDBACK SECTION

Feedback source current

IFB

Shutdown Feedback voltage

VSD

Shutdown delay current

Idelay

SYNC. & SOFT START SECTION

Soft start voltage

VSS

Soft start current

Sync threshold voltage(3)

ISS

VSYTH

REFERENCE SECTION

Output voltage (1)

Temperature Stability (1)(2)

Vref

Vref/∆T

CURRENT LIMIT (SELF-PROTECTION) SECTION

Peak Current Limit

IOVER

PROTECTION SECTION

Thermal shutdown temperature (Tj) (1)

TSD

Over voltage protection voltage

VOVP

TOTAL DEVICE SECTION

Start Up current

ISTART

Operating supply current

(control part only)

IOP

VCC zener voltage

VZ

Test condition

-

After turn on

Ta = 25°C

−25°C ≤ Ta ≤ +85°C

-

Ta = 25°C, Vfb = GND

-

Ta = 25°C, 5V ≤ Vfb ≤VSD

VFB = 2V

Sync & S/S = GND

Vfb = 5V

Ta = 25°C

−25°C ≤ Ta ≤ +85°C

Max. inductor current

-

-

VCC = 14V

Ta = 25°C

ICC = 20mA

Min. Typ. Max. Unit

14 15 16 V

9 10 11 V

18 20 22 kHz

- ±5 ±10 %

92 95 98 %

0.7 0.9 1.1 mA

6.9 7.5 8.1 V

1.4 1.8 2.2 µA

4.7 5.0 5.3 V

0.8 1.0 1.2 mA

6.0 6.4 6.8 V

4.80 5.00 5.20 V

- 0.3 0.6 mV/°C

3.52 4.00 4.48 A

140 160 -

°C

23 25 28 V

0.1 0.3 0.55 mA

6 12 18 mA

30 32.5 35 V

Note:

1. These parameters, although guaranteed, are not 100% tested in production

2. These parameters, although guaranteed, are tested in EDS(water test) process

3.The amplitude of the sync. pulse is recommended to be between 2V and 3V for stable sync. function.

4

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