TS2576CM5 datasheet(3/7 Pages) TSC

3 / 7 page

TS2576

3-7

2003/12 rev. A

All Output Voltage Version (Vin=12V for 5V, 3.3V and Adjustable version, Vin=25V for 12V version, IL = 500mA)

Oscillator Frequency (Note 2)

kHz

Quiescent Current (Note 3)

Standby Current

ENABLE =5V

200

Saturation Voltage (Note 4)

ILOAD=3A

1.4

1.8

Feedback Bias Current

VOUT=5V (Adj. Version only)

100

Duty Cycle (Note 5)

Operating (ON)

Current Limit (Note 2)(Note 4)

4.2

7.0

8.8

VOUT=0V

0.3

Output Leakage Current (Note 3)

VOUT=-1V

7.5

VIH (VOUT=0V)

2.2

1.4

ENABLE Threshold Voltage

VIL(VOUT=Normal Output Voltage)

1.2

1.0

IIH (ENABLE =5V)

ENABLE Input Current

IIH (ENABLE =0V)

Note 1: External components such as the catch diode, inductor, input and output capacitors can affect switching regulator

system performance. Refer to Application information for details.

Note 2: The oscillator frequency reduces to approximately 11KHz in the event of fault conditions, such as output short or

overload. And the regulated output voltage will drop approximately 40% from the nominal output voltage. This

self-protection feature lowers the average power dissipation by lowering the minimum duty cycle from 5% down to

approximately 2%.

Note 3: For these parameters, FB is removed from VOUT and connected to +12V to force the output transistor OFF.

Note 4: VOUT pin sourcing current. No diode, inductor or capacitor connected to VOUT.

Note 5: FB is removed from VOUT and connected to 0V.

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