AS3701 datasheet(17/110 Pages) AMSOSRAM

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[v1-11] 2016-Dec-14

AS3701 − Detailed Description – Power Management Functions

Figure 17:

DCDC Step-Down Converter External Components

Figure 18:

DCDC Step Down Converter Efficiency vs. Load Current at 1MHz

DCDC Efficiency vs. Output Current: VSUP = 3.7V, fSW = 1MHz, Murata LQM2HPN2R2MG0L 2.2μH coil,

TAMB = 25°C.

Symbol

Parameter

Note

Min

Typ

Max

Unit

CFB_SD1

Output Capacitor

Ceramic X5R or X7R

μF

CVSUP_SD1

Input Capacitor

Ceramic X5R or X7R

2.2

μF

LSD1

Inductor

4MHz operation

μH

3MHz operation

2MHz operation

1MHz operation

2.2

100

0.001

0.01

0.1

Output Current (A)

Vout = 0.6125V

Vout = 0.6125V, low noise

Vout = 1.2V, low noise

Vout = 1.2V

Vout = 1.8V, low noise

Vout = 1.8V

Vout = 3.0V, low noise

Vout = 3.0V

100

0.001

0.01

0.1

Output Current (A)

Vout = 1.0V, low noise

Vout = 1.0V

Vout = 1.5V, low noise

Vout = 1.5V

Vout = 2.5V, low noise

Vout = 2.5V

Vout = 3.35V, low noise

Vout = 3.35V

AS3701 Datasheet(PDF) 17 Page - ams-OSRAM AG

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