ADP3050 Analog Devices, ADP3050 Datasheet - Page 8
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ADP3050
Manufacturer Part Number
ADP3050
Description
200 kHz, 1 A Step-Down High-Voltage Switching Regulator
Manufacturer
Analog Devices
Datasheet
1.ADP3050.pdf
(24 pages)
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ADP3050
210
208
206
204
202
200
198
196
194
192
190
250
200
150
100
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
50
–45 –35 –25 –15 –5
0
0
0.1
0
Figure 15. Switch Saturation Voltage vs. Load Current
V
COMP = 0.4V
Figure 16. Switching Frequency vs. Temperature
V
I
LOAD
IN
IN
0.2
= 10V
= 10V
V
= 250µA
IN
0.2
NORMALIZED FEEDBACK VOLTAGE (V)
= 10V
Figure 17. Frequency Foldback
0.3
AMBIENT TEMPERATURE (°C)
0.4
LOAD CURRENT (A)
5
0.4
0.5
15
25
0.6
0.6
35
0.7
45
55
0.8
0.8
65
0.9
75
1.0
85
1.0
Rev. B | Page 8 of 24
0A
0A
1A
0A
0V
0V
5V
Figure 19. Discontinuous Conduction Mode Waveforms
Figure 18. Continuous Conduction Mode Waveforms
I
I
V
V
I
L = 33µH
C
C
Figure 20. Transient Response
L
L
V
V
V
LOAD
IN
OUT
IN
OUT
I
= 500mA/DIV
= 500mA/DIV
SW
SW
OUT
LOAD
= 10V
= 22µF
= 5V/DIV
= 5V/DIV
= 5V
= 100µF
= 100mA TO 1A SWITCHED
= 200mV/DIV
V
V
I
L = 33µH
C
C
LOAD
TIME (1µs/DIV)
TIME (1µs/DIV)
TIME (400µs/DIV)
IN
OUT
IN
OUT
= 10V
= 22µF
= 5V
= 100µF
= 800mA
V
V
I
L = 33µH
C
C
LOAD
IN
OUT
IN
OUT
= 10V
= 22µF
= 5V
= 100µF
= 100mA