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ADP1871ARMZ-0.6-R7 датащи(PDF) 13 Page - Analog Devices

номер детали ADP1871ARMZ-0.6-R7
подробное описание детали  Synchronous Buck Controller with Constant On-Time and Valley Current Mode
PDF  44 Pages
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производитель  AD [Analog Devices]
домашняя страница  http://www.analog.com
Logo AD - Analog Devices

ADP1871ARMZ-0.6-R7 датащи(HTML) 13 Page - Analog Devices

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ADP1870/ADP1871
Rev. 0 | Page 13 of 44
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560
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500
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700
800
900
1000
FREQUENCY (kHz)
VREG = 2.7V
VREG = 5.5V
VREG = 3.6V
+125°C
+25°C
–40°C
Figure 40. Internal Rectifier Drop vs. Frequency
80
1280
720
640
560
480
1040
1120
1200
960
880
800
400
320
240
160
2.73.13.53.94.34.75.15.5
VREG (V)
VIN = 5.5V
VIN = 16.5V
VIN = 13V
1MHz
300kHz
TA = 25°C
Figure 41. Internal Boost Rectifier Drop vs. VREG (Low Input Voltage)
Over VIN Variation
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560
480
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320
240
160
2.73.13.53.94.34.75.15.5
VREG (V)
1MHz
300kHz
+125°C
+25°C
–40°C
Figure 42. Internal Boost Rectifier Drop vs. VREG
8
80
64
72
56
48
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2.73.13.53.94.34.75.15.5
VREG (V)
1MHz
300kHz
+125°C
+25°C
–40°C
Figure 43. Lower-Side MOSFET Body Diode Conduction Time vs. VREG
CH1 50mV
B
W
CH2 5A
Ω
CH3 10V
B
W
CH4 5V
M400ns
A CH2
3.90A
T 35.8%
1
2
3
4
OUTPUT VOLTAGE
INDUCTOR CURRENT
SW NODE
LOW SIDE
Figure 44. Power Saving Mode (PSM) Operational Waveform, 100 mA
CH1 50mV
B
W
CH2 5A
Ω
CH3 10V
B
W
CH4 5V
M4.0µs
A CH2
3.90A
T 35.8%
1
2
3
4
OUTPUT VOLTAGE
INDUCTOR CURRENT
SW NODE
LOW SIDE
Figure 45. PSM Waveform at Light Load, 500 mA



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