LM3532 datasheet(41/52 Pages) TI2

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18 27 36 45 54 63 72 81 90

ILED (mA)

3 LEDs

5 LEDs

7 LEDs

9 LEDs

18 27 36 45 54 63 72 81 90

ILED (mA)

4 LEDs

6 LEDs

8 LEDs

10 LEDs

0 6 12 18 24 30 36 42 48 54 60 66 72 78 84 90

ILED (mA)

5 LEDs

3 LEDs

7 LEDs

9 LEDs

0 6 12 18 24 30 36 42 48 54 60 66 72 78 84 90

ILED (mA)

6 LEDs

4 LEDs

8 LEDs

10 LEDs

LM3532

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SNVS653E – JULY 2011 – REVISED AUGUST 2015

VIN = 3.6 V, LEDs (VF = 3.2 V at 20 mA, TA = 25°C), COUT = 1 µF, CIN = 2.2 µF, L = Coilcraft LPS4018-103ML (10 µH ) or

LPS4018-223M (22 µH), TA = 25°C unless otherwise specified.

VIN = 3.6 V

L = 10 µH

VIN = 3.6 V

L = 10 µH

Figure 40. Efficiency vs ILED Triple String

Figure 41. Efficiency vs ILED Triple String

VIN = 3.6 V

L = 22 µH

VIN = 3.6 V

L = 22 µH

Figure 42. Efficiency vs ILED Triple String

Figure 43. Efficiency vs ILED Triple String

9 Power Supply Recommendations

The LM3532 is designed to operate from an input supply range of 2.7 V to 5.5 V. This input supply should be

well regulated and provide the peak current required by the LED configuration and inductor selected.

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LM3532 Datasheet(PDF) 41 Page - Texas Instruments

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