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AS1339 Datasheet(PDF) 14 Page - ams AG

Part # AS1339
Description  650mA RF Step-Down DC-DC for PA, with two LDOs
PDF  25 Pages
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Manufacturer  AMSCO [ams AG]
Direct Link  http://www.ams.com
Logo AMSCO - ams AG

AS1339 Datasheet(HTML) 14 Page - ams AG

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www.austriamicrosystems.com
Revision 1.04
14 - 25
AS1339
Datasheet - Ty p i c a l O p e r a t i o n C h a r a c t e r i s t i c s
Figure 39. DC-DC Line Transient; VIN = 4.0V to 3.5V,
VOUT = 1.2V, RLOAD = 10
Ω
Figure 40. DC-DC Load Transient; IOUT = 0mA to
500mA, VIN = 3.6V, VOUT = 2.5V
50µs/Div
50µs/Div
Figure 41. LDO Quiescent Current vs. VIN
Figure 42. LDO Line Regulation, VOUT vs. VIN
0
10
20
30
40
50
60
70
80
12
34
56
Input Voltage (V)
both LDO's
one LDO
2.7
2.72
2.74
2.76
2.78
2.8
2.82
2.84
2.86
2.88
2.9
2.7 3.05 3.4 3.75 4.1 4.45 4.8 5.15 5.5
Input Voltage (V)
Iout = 0mA
Iout = 1mA
Iout = 10mA
Iout = 20mA
Figure 43. LDO PSRR vs. Freq.; VIN = 3.2V, VOUT =
2.85V, VRIPPLE = 200mVPP, COUT =100nF
Figure 44. LDO Output Noise vs. Freq.; VIN = 3.2V,
VOUT = 2.85V, COUT =100nF
-80
-70
-60
-50
-40
-30
-20
-10
0
10
100
1000
10000
100000
Frequency (Hz)
4mA
no Load
0.01
0.1
1
10
10
100
1000
10000
100000
Frequency (Hz)
10mA
no Load



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