MAS 35x9F
DATA SHEET
5.2. Recommended DC/DC Converter Application Circuit
(Power optimized scenario, (see Fig. 2–7 on page 13)).
VBAT
L1 = 22 µH
DCSO1
D1, Schottky
+
AVDD0/1
VSENS1
C3 = 330 µF
Vin (Input Voltage)
(0.9..1.5 V)
VDC1
e.g. 2.2 V
C1 = 330 µF
(low ESR)
+
DCSG1
VSS, XVSS
D
DCEN
Power-On Push Button
L2 = 22 µH
DCSO2
D2, Schottky
VSENS2
VDC2
e.g. 3.0 V
for µC,
Storage Media
C2 = 330 µF
(low ESR)
+
Star Point
Ground Connection
very close to Pins
DCSG2
DCSG1 and DCSG2
VREF
D
AVSS0/1
A
A
Fig. 5–2: External circuitry for the DC/DC converters
For turn-on voltage of DSP and codec, please refer
to Section 2.11.2.1.
90
June 30, 2004; 6251-505-1DS
Micronas