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ADP3191JRUZ-RL Datasheet(PDF) 7 Page - Analog Devices

No. de pieza ADP3191JRUZ-RL
Descripción Electrónicos  6-Bit, Programmable 2-/3-/4-Phase, Synchronous Buck Controller
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Fabricante Electrónico  AD [Analog Devices]
Página de inicio  http://www.analog.com
Logo AD - Analog Devices

ADP3191JRUZ-RL Datasheet(HTML) 7 Page - Analog Devices

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ADP3191
Rev. 0 | Page 7 of 28
TYPICAL PERFORMANCE CHARACTERISTICS AND TEST CIRCUITS
2.8
0
RT (kΩ)
0
50
100
150
200
250
300
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
Figure 3. Master Clock Frequency vs. RT
250kΩ
1.25V
1
µF
100nF
100nF
ADP3191
ADP3191A
VID4
VID3
VID2
VID1
VID0
VID5
FBRTN
FB
COMP
PWRGD
EN
DELAY
RT
RAMPADJ
VCC
PWM1
PWM2
PWM3
PWM4
SW1
SW2
SW3
SW4
GND
CSCOMP
CSSUM
CSREF
ILIMIT
1
2
3
28
27
26
4
8
10
12
14
5
6
7
21
24
23
22
9
11
17
18
19
13
15
16
20
25
6-BIT CODE
250kΩ
20kΩ
1kΩ
12nF
12V
+
240Ω
5V
ADP3191A
ADP3191
Figure 4. Closed-Loop Output Voltage Accuracy
CSSUM
CSCOMP
VCC
CSREF
GND
39kΩ
100nF
1kΩ
1.0V
ADP3191
VOS =
CSCOMP – 1V
40
12V
300Ω
18
17
28
16
19
Figure 5. Current Sense Amplifier VOS
CSSUM
18
CSCOMP
17
28
VCC
CSREF
16
GND
19
200kΩ
100nF
1.0V
ADP3191/ADP3191A
ΔV
12V
240Ω
5V
ADP3191A
ADP3191
200kΩ
ΔVFB = FBΔV = 80mV – FBΔV = 0mV
Figure 6. Positioning Voltage


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