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AS3658F-BCTP bảng dữ liệu(PDF) 86 Page - ams AG

tên linh kiện AS3658F-BCTP
Giải thích chi tiết về linh kiện  Power and Audio Management Unit for Portable Devices
PDF  158 Pages
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nhà sản xuất  AMSCO [ams AG]
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AS3658F-BCTP bảng dữ liệu(HTML) 86 Page - ams AG

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www.austriamicrosystems.com
Revision 1v13
85 - 157
AS3658
Data Sheet Confidential - Detail ed Descri ption-Power Management Functions
8.13
5V Charge Pump
Figure 34. 5V Charge Pump Block diagram
The charge pump uses the pad VCP_IN as input, regulates and doubles its voltage with the help of the flying capacitor
between CAPP and CAPN to its output VCP_OUT (the output is automatically limited not to exceed VCPOUT). If the bit
cp_pulseskip is set, the charge pump operates in pulse skip mode, and only starts cycles if its output voltage is below
this level. In this mode the supply current is reduced, but the output ripple is increased.
The charge pump requires the following external components:
Table 84. Charge Pump External Components
Symbol
Parameter
Min
Typ
Min
Unit
Note
IOFF
Shut down current
100
nA
IVDD
Supply current
3
µA
Guaranteed per design, consider
chip internal load for measurements.
tstart
Startup time
200
µs
Vout
Output voltage
2.4
2.5
2.6
V
Vout_tol
Output voltage
tolerance
-50
50
mV
VLineReg
Line regulation
-10
10
mV
Static
-50
50
Transient; Slope: tr=10s
VLoadReg
Load regulation
-10
10
mV
Static
-50
50
Transient; Slope: tr=10s
CFLY
External flying
capacitor
370
470
850
nF
Ceramic X5R or X7R low-ESR
capacitor between CAPP and CAPN
CSTORE
External storage
capacitor
1.76
2.2
2.64
µF
Ceramic X5R or X7R low-ESR
capacitor between VCP_OUT and
VSS
Dout
Schottky Diode for
startup between
VCP_IN and
VCP_OUT
1
A
Peak current of schottky Diode
Table 83. Low power LDO (V2_5) Characteristics,VBAT=4V; ILOAD_ext=0; Tamb=25ºC; CLOAD =2.2 µF (Ceramic);
unless otherwise specified
Symbol
Parameter
Min
Typ
Max
Unit
Note










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