LM3280 datasheet(12/26 Pages) TI2

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0.1

0.2

0.3

0.4

0.5

VCON VOLTAGE (V)

0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

0.0

VIN = 5.0V

VIN = 5.5V

VIN = 4.7V

0.4

0.6

0.8

1.0

1.2

1.4

VCON VOLTAGE (V)

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

0.2

VIN = 3.6V

Bypass Mode

VIN = 3.0V

VIN = 2.7V

VIN = 4.2V

TA = -30°C

TA = 25°C

TA = 85°C

ILIM-BYP

= 965 mA

Max Load

Capability

200

400

600

800

1000

1200

OUTPUT CURRENT (mA)

1.0

0.8

0.6

0.4

0.2

0.0

500 mA

-40

-20

100

AMBIENT TEMPERATURE (

oC)

760

780

800

820

840

860

VIN = 2.7V

VIN = 3.6V

VIN = 4.2V

OPEN LOOP

CLOSED LOOP

VIN = 4.2V

VIN = 2.7V

VIN = 3.6V

LM3280

SNOSAU4B – OCTOBER 2006 – REVISED FEBRUARY 2013

www.ti.com

Typical Performance Characteristics (continued)

(VIN = ENBUCK = 3.6V, ENLDOx = BYP = 0V, TA = 25°C, unless otherwise noted)

Open/Closed Loop Current Limit vs

Dropout Voltage vs

Temperature

Output Current

(PWM mode)

(Bypass mode, VIN = BYP = 3.6V)

Figure 31.

Figure 32.

VCON Voltage vs

Low VCON Voltage vs

PWM Output Voltage

Output Voltage

(IOUT = 200mA)

(RLOAD = 15Ω)

Figure 33.

Figure 34.

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