AS3709 datasheet(17/74 Pages) AMSCO

17 / 74 page

ams Datasheet, Confidential: 2013-Aug [1-02]

AS3709 – 17

Detaile d Desc ri p t ion - P o w e r M a nagemen t Fu nc tions

Figure 20:

DCDC SD1 Efficiency vs. Output Current

SD1 Efficiency vs. Output Current: VIN = 3.7V, VOUT = 1.2V/2.5V, 3MHz operation, TA = +25°C

Figure 21:

DCDC SD1 + SD2 Efficiency vs. Output Current

SD1 + SD2 Efficiency vs. Output Current: VIN = 3.7V, 3MHz operation, XFL4020 1μH coil, TA = +25°C

100

0,001

0,01

0,1

Output Current (A)

1uH XFL4020, 11mΩ, 1.2V

1uH XFL4020, 11mΩ, LN, 1.2V

1uH LQM2HP_G0, 55mΩ, 1.2V

1uH LQM2HP_G0, 55mΩ, LN, 1.2V

100

0,001

0,01

0,1

Output Current (A)

1uH XFL4020, 11mΩ, 2.5V

1uH XFL4020, 11mΩ, LN, 2.5V

1uH LQM2HP_G0, 55mΩ, 2.5V

1uH LQM2HP_G0, 55mΩ, LN, 2.5V

100

0,001

0,01

0,1

Output Current (A)

Vout = 1.0V

Vout = 1.0V, low noise

Vout = 1.8V

Vout = 1.8V, low noise

Vout = 3.0V

Vout = 3.0V, low noise

100

0,001

0,01

0,1

Output Current (A)

Vout = 1.2V

Vout = 1.2V, low noise

Vout = 2.5V

Vout = 2.5V, low noise

AS3709 Datasheet(PDF) 17 Page - ams AG

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