ISL91128 datasheet(7/17 Pages) RENESAS

部件名	ISL91128

功能描述	High Efficiency Buck-Boost Regulator with 4.5A Switches and I2C Interface

PDF	17 Pages

Scroll/Zoom	100%

制造商	RENESAS [Renesas Technology Corp]

网页	http://www.renesas.com

标志

7 / 17 page

ISL91128

FN8732 Rev.3.00

Page 7 of 17

May 3, 2018

Typical Performance Curves Unlessotherwisenoted,operatingconditionsare:T

A = +25°C, VIN = EN = 3.6V, L1 = 1µH,

C1 = 2x10µF, C2 = 2x22µF, VOUT = 3.3V, IOUT = 0A to 3A.

FIGURE 4. EFFICIENCY vs INPUT VOLTAGE

FIGURE 5. OUTPUT VOLTAGE vs LOAD CURRENT

FIGURE 6. QUIESCENT CURRENT vs INPUT VOLTAGE (VOUT = 3.3V,

MODE = HIGH)

FIGURE 7. SWITCHING FREQUENCY vs INPUT VOLTAGE

FIGURE 8. STEADY-STATE OPERATION IN PFM (VIN = 3.3V,

VOUT =3.3V, NO LOAD)

FIGURE 9. SOFT-START (VIN = 3.6V, VOUT = 3.3V, NO LOAD)

80.00

85.00

90.00

95.00

100.00

2.0

2.5

3.0

3.5

4.0

4.5

5.0

VIN (V)

LOAD = 10mA

LOAD = 100mA

LOAD = 1000mA

LOAD = 500mA

3.2

3.21

3.22

3.23

3.24

3.25

3.26

3.27

3.28

3.29

3.3

100

1000

LOAD CURRENT(mA)

2.5V

4.2V

3.3V

3.6V

2.8V

TA = -40°C

TA = +25°C

TA = +85°C

1.5

2.5

3.5

4.5

5.5

VIN (V)

2.25

2.30

2.35

2.40

2.45

2.50

2.55

1.5

2.5

3.5

4.5

5.5

VIN (V)

400ns/DIV

LX1 (2V/DIV)

LX2 (2V/DIV)

VOUT (AC, 50mV/DIV)

IL (500mA/DIV)

IL (1A/DIV)

VOUT (AC, 1V/DIV)

EN (2V/DIV)

1ms/DIV

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