as1339 austriamicrosystems, as1339 Datasheet - Page 12

• Manufacturer Part Number: as1339
• Description: 650ma Rf Step-down Dc-dc For Pa, With Two Ldos
• Manufacturer: austriamicrosystems

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 29. DC-DC No-Load Supply Current vs. V
Figure 31. DC-DC Switching; V
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Figure 27. DC-DC Output Voltage Error vs. Reference
6
5
4
3
2
1
0
-2
-4
8
6
4
2
0
0.25
1
I
Voltage
OUT
Vout = 3.4V
0.5
=50mA
2
Reference Voltage (V)
Input Voltage (V)
0.75
1µs/Div
Bypass
Mode
3
IN
=3.6V, V
1
4
PWM
Mode
PA
Vin = 2.7V
Vin = 3.0V
Vin = 3.3V
Vin = 3.6V
Vin = 3.9V
1.25
=1.2V,
5
IN
1.5
Revision 1.02
6
Figure 32. DC-DC Switching; V
Figure 28. DC-DC Bypass Dropout Voltage vs. Output
Figure 30. Shutdown Supply Current vs. V
120
100
100
80
60
40
20
80
60
40
20
0
0
2.7 3.05 3.4 3.75 4.1 4.45 4.8 5.15 5.5
0
I
Current
OUT
100 200 300 400 500 600 700 800 900
=500mA
Output Current (mA)
Input Voltage (V)
1µs/Div
IN
=3.6V, V
PA
Vin = 2.7V
Vin = 3.0V
Vin = 3.3V
Vin = 3.6V
IN
=1.2V,
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