MAX8822ETE+ datasheet(4/15 Pages) MAXIM

Part #	MAX8822ETE+

Description	Ultra-Efficient Negative Charge-Pump LED Driver with Dual LDOs in 3mm x 3mm Thin QFN

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Manufacturer	MAXIM [Maxim Integrated Products]

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Ultra-Efficient Negative Charge-Pump LED

Driver with Dual LDOs in 3mm x 3mm Thin QFN

4

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Typical Operating Characteristics

(VIN = 3.6V, VEN_ = VIN, Circuit of Typical Operating Circuit, TA = +25°C, unless otherwise noted.)

0

30

20

10

40

50

60

70

80

90

100

2.7

3.3

3.0

3.6

3.9

4.2

EFFICIENCY vs. SUPPLY VOLTAGE

(4 MATCHED WLEDs)

SUPPLY VOLTAGE (V)

20.8mA/LED

14.4mA/LED

6.4mA/LED

1.6mA/LED

VIN FALLING

0

30

20

10

40

50

60

70

80

90

100

2.7

3.3

3.0

3.6

3.9

4.2

EFFICIENCY vs. SUPPLY VOLTAGE

(4 MISMATCHED WLEDs)

SUPPLY VOLTAGE (V)

1.6mA/LED

VIN FALLING

14.4mA/LED

0

30

20

10

40

50

60

70

80

90

100

2.7

3.3

3.0

3.6

3.9

4.2

EFFICIENCY vs. SUPPLY VOLTAGE

(4 MISMATCHED WLEDs)

SUPPLY VOLTAGE (V)

6.4mA/LED

VIN FALLING

20.8mA/LED

40

60

50

80

70

90

100

4.2

3.7

3.6

3.9

3.8

3.5 3.4 3.0

EFFICIENCY vs. Li+ BATTERY VOLTAGE

(4 MATCHED WLEDs)

Li+ BATTERY VOLTAGE (V, TIME-WEIGHTED)

20mA/LED

1.6mA/LED

6.4mA/LED

14.4mA/LED

40

60

50

80

70

90

100

4.2

3.7

3.6

3.9

3.8

3.5 3.4 3.0

EFFICIENCY vs. Li+ BATTERY VOLTAGE

(4 MISMATCHED WLEDs)

Li+ BATTERY VOLTAGE (V, TIME-WEIGHTED)

14.4mA/LED

1.6mA/LED

40

60

50

80

70

90

100

4.2

3.7

3.6

3.9

3.8

3.5 3.4 3.0

EFFICIENCY vs. Li+ BATTERY VOLTAGE

(4 MISMATCHED WLEDs)

Li+ BATTERY VOLTAGE (V, TIME-WEIGHTED)

20.8mA/LED

6.4mA/LED

0

40

20

80

60

120

100

140

2.7

3.3

3.0

3.6

3.9

4.2

SUPPLY CURRENT vs. SUPPLY VOLTAGE

(4 WLEDs)

SUPPLY VOLTAGE (V)

VIN FALLING MISMATCHED LEDs

20.8mA/LED

14.4mA/LED

1.6mA/LED

6.4mA/LED

0

20

60

40

80

100

2.7

3.3

3.0

3.6

3.9

4.2

SUPPLY CURRENT vs. SUPPLY VOLTAGE

(RGB MODULE)

SUPPLY VOLTAGE (V)

RGB MODULE: LUMEX SML-LX3632SISUGSBC,

VIN FALLING

20.8mA/LED

14.4mA/LED

6.4mA/LED

1.6mA/LED

0

0.4

0.8

1.2

1.6

2.0

2.4

2.8

2.7

3.0

3.3

3.6

3.9

4.2

INPUT VOLTAGE RIPPLE

vs. SUPPLY VOLTAGE (4 WLEDs)

SUPPLY VOLTAGE (V)

VIN FALLING, MISMATCHED LEDs

20.8mA/LED

14.4mA/LED

6.4mA/LED

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