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AS3701 Datasheet(PDF) 16 Page - ams-OSRAM AG

Part # AS3701
Description  Micro-PMIC
PDF  110 Pages
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Manufacturer  AMSOSRAM [ams-OSRAM AG]
Direct Link  https://ams-osram.com/
Logo AMSOSRAM - ams-OSRAM AG

AS3701 Datasheet(HTML) 16 Page - ams-OSRAM AG

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ams Datasheet
Page 15
[v1-11] 2016-Dec-14
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AS3701 − Detailed Description – Power Management Functions
Fast Regulation Mode
This mode can be used to react faster on sudden load changes
and thus minimize the over-/undershoot of the output voltage.
This mode needs a 22
μF output capacitor instead the 10μF one
to guarantee the stability of the regulator.
The mode is enabled by setting the bit sd_fast [SD_control1]
to 1.
Selectable Frequency Operation
Especially for very low load conditions, e.g. during a sleep mode
of a processor, the switching frequency can be reduced to
achieve a higher efficiency. The frequency can be set to 1, 2, 3
or 4MHz and this mode is selected by setting sd1_freq
[SD1Voltage] and sd1_fsel [SD_control1] to the appropriate
values.
Parameters
Figure 16:
DCDC Step-Down Converter Electrical Characteristics
Symbol
Parameter
Note
Min
Typ
Max
Unit
VIN
Input Voltage
Pin VSUP
2.7
5.5
V
VOUT
Regulated Output Voltage
0.6125
3.35
V
VOUT_TOL
Output Voltage Tolerance
min. 40mV
-3
+3
%
ILIMIT
Current Limit
800
mA
RPMOS
P-switch ON resistance
0.36
1
Ω
RNMOS
N-switch ON resistance
0.33
1
Ω
fSW
Switching Frequency
1
3
4
MHz
ILOAD
Load Current
500
mA
ISUP_DCDC
Current Consumption
Operating Current
without Load
27
μA
Shutdown Current
0.1
tMIN_ON
Minimum ON Time
40
ns



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