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AS3715 Datasheet(PDF) 19 Page - ams-OSRAM AG

Part # AS3715
Description  Dual or Single Power Path PMIC
PDF  159 Pages
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Manufacturer  AMSOSRAM [ams-OSRAM AG]
Direct Link  https://ams-osram.com/
Logo AMSOSRAM - ams-OSRAM AG

AS3715 Datasheet(HTML) 19 Page - ams-OSRAM AG

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Page 18
ams Datasheet
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[v1-03] 2015-Aug-10
AS3715 − Detailed Description – Power Management Functions
DC/DC Buck Converter Parameter: Shows the key electrical parameter of the internal DC/DC buck converters.
Figure 14:
DC/DC Buck Converter External Components
DC/DC Buck Converter External Components: Shows the external component parameter of the internal DC/DC
buck converters.
SD1, VSUP_SDx=3.0V
120
200
mΩ
RNSW
N-Switch ON resistance
incl. bonds, substrate, etc
SD2, SD3; VSUP_SDx=3.0V
160
500
mΩ
SD1; VSUP_SDx=3.0V
63
200
mΩ
fSW
Switching frequency
sdX_frequ=1; sdX_fsel=1;
fclk_int =4MHz
4MHz
sdX_frequ=0; sdX_fsel=1;
fclk_int =4MHz
3MHz
sdX_frequ=0; sdX_fsel=0;
fclk_int =4MHz (SD2/3 only)
2MHz
ηeff
Efficiency
see figures below
%
IVDD
Current consumption
Operating current without
load
60
μA
RDISCHG
Pull-down resistance
SD1 disabled
100
Ω
SD2 or SD3 disabled
200
Ω
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
COUT_SD2;3
Output capacitor
Ceramic X5R or X7R
8
μF
Output capacitor, sd2_fast=1 or
sd3_fast=1
Ceramic X5R or X7R
18
μF
COUT_SD1
Output capacitor
Ceramic X5R or X7R
12
μF
Output capacitor, sd1_fast=1
Ceramic X5R or X7R
27
μF
CVSUP_SD1;2;3
Input capacitor
Ceramic X5R or X7R
2.2
μF
LSD1-SD3
Inductor
4/3MHz operation
0.5
1
μH
4/3MHz; VOUT≤1.8V
0.3
0.47
μH
Symbol
Parameter
Conditions
Min
Typ
Max
Unit



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