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ADP1621ARMZ-R7 Arkusz danych(PDF) 9 Page - Analog Devices

Numer części ADP1621ARMZ-R7
Szczegółowy opis  Constant-Frequency, Current-Mode Step-Up DC-to-DC Controller
PDF  32 Pages
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Producent  AD [Analog Devices]
Strona internetowa  http://www.analog.com
Logo AD - Analog Devices

ADP1621ARMZ-R7 Arkusz danych(HTML) 9 Page - Analog Devices

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Data Sheet
ADP1621
Rev. D | Page 9 of 32
45
0
0
1800
SWITCHING FREQUENCY (kHz)
MOSFET QG = 25nC
MOSFET QG = 15nC
MOSFET QG = 7nC
40
35
30
25
20
15
10
5
200
400
600
800
1000
1200
1400
1600
Figure 11. PIN Supply Current vs. Switching Frequency
2.60
2.40
–50
150
TEMPERATURE (°C)
SDSN = 5V
2.55
2.50
2.45
0
50
100
Figure 12. VUVLO Threshold vs. Temperature
1.03
0.97
–50
150
TEMPERATURE (°C)
0
50
100
1.02
1.01
1.00
0.99
0.98
VIN = 5V
Figure 13. Frequency vs. Temperature
35
0
0
50
GATE CAPACITANCE (nF)
30
25
20
15
10
5
5
10
15
20
25
30
35
40
45
TA = 25°C
VIN = VPIN = 5V
tR OR tF IS FROM
10% TO 90% OF
THE GATE VOLTAGE
tF
tR
Figure 14. GATE Rise and Fall Times vs. CGATE
1600
0
0
200
RFREQ (kΩ)
1500
1400
1300
1200
1100
1000
900
800
700
600
500
400
300
200
100
20
40
60
80
100
120
140
160
180
Figure 15. Oscillator Frequency vs. Resistance
198
191
2
VIN (V)
197
196
195
194
193
192
3
4
5
TA = 25°C
RFREQ = 100kΩ
Figure 16. Oscillator Frequency vs. VIN



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