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ADP3161JR Datasheet(PDF) 4 Page - Analog Devices

Part # ADP3161JR
Description  4-Bit Programmable 2-Phase Synchronous Buck Controller
PDF  12 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADP3161JR Datasheet(HTML) 4 Page - Analog Devices

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–4–
REV. 0
ADP3161
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
VCC
REF
GND
CT
COMP
PWM1
PWM2
PWRGD
CS–
CS+
FB
NC
VID3
VID2
VID1
VID0
ADP3161
4-BIT CODE
100
1 F
100nF
1.2V
12V
100nF
VFB
+
AD820
NC = NO CONNECT
TPC 1. Closed-Loop Output Voltage Accuracy Test Circuit
CT CAPACITOR – pF
10000
1000
100
0
100
200
300
400
500
TPC 2. Oscillator Frequency vs. Timing Capacitor
OUT
+
PWM2
PWM1
IL2
IOUT
IL1
5V OR 12V
IL2
IL1
5V
5V
PWM1
PWM2
5V
OR
12V
ADP3161
2-PHASE
SYNCHRONOUS
BUCK
CONTROLLER
ADP3412
SYNCHRONOUS
DRIVER
ADP3412
SYNCHRONOUS
DRIVER
12V
TPC 5. 2-Phase CPU Supply System Level Block Diagram
–Typical Performance Characteristics
OSCILLATOR FREQUENCY – kHz
4.10
3.90
3.85
0
2000
1000
3.95
4.00
4.05
250
500
750
1250
1500
1750
TPC 3. Supply Current vs. Oscillator Frequency
OUTPUT ACCURACY – % OF NOMINAL
30
5
0
–0.5
0.5
0
25
10
TA = 25 C
VOUT = 1.6V
20
15
TPC 4. Output Accuracy Distribution



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