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ADP1850 Datasheet(PDF) 28 Page - Analog Devices

Part # ADP1850
Description  Wide Range Input, Dual/Two-Phase, DC-to-DC Synchronous Buck Controller
PDF  32 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADP1850 Datasheet(HTML) 28 Page - Analog Devices

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ADP1850
Rev. 0 | Page 28 of 32
VCCO
VCCO
150k
Ω
EN1
SYNC
100nF
TO
VIN
VIN
VCCO
VDL
AGND
FREQ
EN2
SW1
DH1
PGND1
DL1
DL2
PGND2
DH2
SW2
ADP1850
1
2
3
4
5
6
7
8
24
23
22
21
20
19
18
17
32
31
30
29
28
27
26
25
9
10
11
12
13
14
15
16
28k
Ω
33pF
560pF
10k
Ω
100pF
1.5nF
100nF
1µF
0.1µF
0.1µF
1µF
1µF
2.8k
Ω
L2
M2B
M2A
22k
Ω
COUT2
CIN2
VOUT2
1.8V
5A
VIN
2.8k
Ω
L1
M1B
M1A
22k
Ω
COUT1
CIN1
VOUT1
5V
5A
VIN = 10V TO 20V
20k
Ω
10k
Ω
CIN1, CIN2: 10µF/X5R/16V/1206 × 2, GRM31CR61C106KA88, MURATA
M1, M2: SI944DY OR BSON03MD
COUT1, COUT2: 22µF/XR5/1210/6.3V × 3, GRM32DR60J226KA01, MURATA
fSW = 750kHz, PULSE SKIP MODE
L1: 2µH, WURTH ELEKTRONIK, 744310200
L2: 1.15µH, WURTH ELEKTRONIK, 744310115
73.2k
Ω
10k
Ω
2
Ω
2
Ω
84.5k
Ω
Figure 45. Typical Low Current Operating Circuit



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