MAX8662(2007) データシートの表示（PDF） - Maxim Integrated

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MAX8662
(Rev.:2007)

Power-Management ICs for Single-Cell, Li+ Battery-Operated Devices

Maxim Integrated 

Power-Management ICs for

Single-Cell, Li+ Battery-Operated Devices

Typical Operating Characteristics (continued)

(Circuit of Figure 1, VDC = 5V, RPSET = 1.5kΩ, RISET = 3kΩ, VOUT1 = 3.3V, VOUT2 = 1.3V, SL1 = SL2 = open, VCEN = 0V, VPEN1 =

VPEN2 = 5V, COUT1 = 2 x 10µF, COUT2 = 2 x 10µF, COUT3 = 0.1µF, COUT4 = 4.7µF, COUT5 = 1µF, COUT6 = 2.2µF, COUT7 = 1µF, CT =

0.068µF, CREF = CVL = 0.1µF, RTHM = 10kΩ, L1 = 3.3µH, L2 = 4.7µH, L3 = 22µH, GND = PG1 = PG2 = PG3 = 0, TA = +25°C, unless

otherwise noted.)

OUT2 ENABLE AND DISABLE RESPONSE

MAX8662/63 toc38

VEN2

0V

2V/div

LED CURRENT

vs. PWM DIMMING DUTY CYCLE

5.0

VBAT = 3.6V

4.5 VBRT = 0.25V

4.0 f = 1kHz

3.5

3.0

LED CURRENT vs. BRT VOLTAGE

30

VBAT = 3.6V

25

20

2.5

15

2.0

VOUT2 0V

1V/div

1.5

10

1μs/div

IOUT2 = 10mA

1.0

0.5

0

0 10 20 30 40 50 60 70 80 90 100

DUTY CYCLE (%)

5

0

0

0.3

0.6

0.9

1.2

1.5

BRT VOLTAGE (V)

IL

VLX

VOUT3

AC-COUPLED

OUT3 SWITCHING WAVEFORMS

MAX8662/63 toc41

OUT3 ENABLE AND DISABLE RESPONSE

MAX8662/63 toc42

100mA/div

VEN3

0V

2V/div

10V/div

VOUT3 0V

10V/div

1μs/div

200mV/div

IOUT3 = 1mA

40ms/div

OUT3 REGULATOR EFFICIENCY

vs. LOAD CURRENT

100

90

VSYS = 5.5V

VSYS = 4.2V

80

70

VSYS = 3.6V

60

50

40

30

20

10

0

0.1

1

10

100

LOAD CURRENT (mA)

OUT4 REGULATOR LOAD REGULATION

3.315

3.310

3.305

3.300

VIN = 3.6V

OUT4 REGULATOR LINE REGULATION

3.4

RLOAD = 330Ω

3.0

2.6

OUT4 VOLTAGE vs. TEMPERATURE

3.315

3.313

VBAT = 4.0V

RLOAD = 330Ω

3.311

3.295

2.2

3.290

VIN = 5.5V

1.8

3.285

3.309

3.307

3.280

0

100 200 300 400 500

LOAD CURRENT (mA)

1.4

1

2

3

4

5

6

VIN_OUT4 (V)

3.305

-40 -15

10

35

60

85

AMBIENT TEMPERATURE (°C)

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