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ADP1621ARMZ-R7 Datasheet(PDF) 8 Page - Analog Devices

No. de pieza ADP1621ARMZ-R7
Descripción Electrónicos  Constant-Frequency, Current-Mode Step-Up DC/DC Controller
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Fabricante Electrónico  AD [Analog Devices]
Página de inicio  http://www.analog.com
Logo AD - Analog Devices

ADP1621ARMZ-R7 Datasheet(HTML) 8 Page - Analog Devices

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ADP1621
Rev. A | Page 8 of 32
TYPICAL PERFORMANCE CHARACTERISTICS
100
30
0.01
10
LOAD CURRENT (A)
90
80
70
60
50
40
0.1
1
TA = 25°C
fSW = 220kHz
VIN = 3.3V
VOUT = 5V
Figure 5. Efficiency vs. Load Current
CH1 20mV
CH2 2V
M2µs
A CH2
2.6V
1
2
TA = 25°C
VIN = 3.3V
VOUT = 5V
LOAD = 1A
VOUT RIPPLES @ 5V
AC-COUPLED
CH2 = GATE
Figure 6. Output Voltage Ripple of the Circuit Shown in Figure 1
1.21605
1.21575
2.5
6.0
VIN (V)
TA =25°C
1.21600
1.21595
1.21590
1.21585
1.21580
3.0
3.5
4.0
4.5
5.0
5.5
Figure 7. VFB vs. VIN
92
84
100
SWITCHING FREQUENCY (kHz)
91
90
89
88
87
86
85
300
500
700
900
1100
1300
1500
TA = 25°C
VIN = 3.3V
VOUT = 5V
LOAD = 1A
LOAD = 0.5A
Figure 8. Efficiency vs. Switching Frequency
100
0.00001
07
SUPPLY VOLTAGE (V)
TA = 25°C
NO SWITCHING
10
1
0.1
0.01
0.001
0.0001
12
34
5
6
IIN
IPIN
Figure 9. Supply Current vs. Supply Voltage
2.5
0
1.17
1.29
VFB (V)
TA = 25°C
VIN = 5V
2.0
1.5
1.0
0.5
1.19
1.21
1.23
1.25
1.27
Figure 10. VCOMP vs. VFB


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