ADP3050 Analog Devices, ADP3050 Datasheet - Page 8

• Manufacturer Part Number: ADP3050
• Description: 200 kHz, 1 A Step-Down High-Voltage Switching Regulator
• Manufacturer: Analog Devices

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