ISL9112 datasheet(10/20 Pages) INTERSIL

Part #	ISL9112

Description	1.2A High Efficiency Buck-Boost Regulators

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Manufacturer	INTERSIL [Intersil Corporation]

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ISL9110, ISL9112

10

FN7649.2

July 13, 2012

FIGURE 15. SWITCHING WAVEFORMS, BOOST MODE

FIGURE 16. SWITCHING WAVEFORMS, BUCK MODE

FIGURE 17. NFET RDS(ON) vs INPUT VOLTAGE

FIGURE 18. PFET RDS(ON) vs INPUT VOLTAGE

FIGURE 19. VREF vs TEMPERATURE, TA = -40°C TO +85°C

FIGURE 20. OUTPUT VOLTAGE vs VIN VOLTAGE (VOUT = 3.3V)

Typical Performance Curves (Continued)

LX1

2V/DIV

LX2

10mV/DIV

VOUT

0.5A/DIV

CURRENT

INDUCTOR

400ns/DIV

VIN = 2.5V

VOUT = 3.3V

IOUT = 500mA

LX1

5V/DIV

LX2

10mV/DIV

VOUT

0.5A/DIV

CURRENT

INDUCTOR

400ns/DIV

VIN = 4.5V

VOUT = 3.3V

IOUT = 1A

0.00

0.05

0.10

0.15

0.20

0.25

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

-40°C

0°C

+40°C

+85°C

VIN (V)

0.00

0.05

0.10

0.15

0.20

0.25

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

-40°C

0°C

+40°C

+85°C

VIN (V)

0.790

0.795

0.800

0.805

0.810

-40

-20

0

2040

6080

100

TEMPERATURE (°C)

3.270

3.275

3.280

3.285

3.290

1.5

2.5

3.5

4.5

5.5

IOUT = 0.1A

(PFM)

NO LOAD

(PFM)

IOUT = 1.2A

(PWM)

IOUT = 0.8A (PWM)

IOUT = 0.4A (PWM)

VIN (V)

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