Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.NET

X  

Preview PDF HTML

MAX20047AFPA/V+ Datasheet(PDF) 22 Page - Maxim Integrated Products

Part # MAX20047AFPA/V+
Description  Dual 3A USB DCP Charger
PDF  29 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX20047AFPA/V+ Datasheet(HTML) 22 Page - Maxim Integrated Products

Back Button MAX20047AFPA/V+ Datasheet HTML 18Page - Maxim Integrated Products MAX20047AFPA/V+ Datasheet HTML 19Page - Maxim Integrated Products MAX20047AFPA/V+ Datasheet HTML 20Page - Maxim Integrated Products MAX20047AFPA/V+ Datasheet HTML 21Page - Maxim Integrated Products MAX20047AFPA/V+ Datasheet HTML 22Page - Maxim Integrated Products MAX20047AFPA/V+ Datasheet HTML 23Page - Maxim Integrated Products MAX20047AFPA/V+ Datasheet HTML 24Page - Maxim Integrated Products MAX20047AFPA/V+ Datasheet HTML 25Page - Maxim Integrated Products MAX20047AFPA/V+ Datasheet HTML 26Page - Maxim Integrated Products Next Button
Zoom Inzoom in Zoom Outzoom out
 22 / 29 page
background image
Applications Information
Component Selection
RFOSC Selection
The switching frequency of the MAX20047 DC-DC IC is
set by connecting a resistor between the FOSC pin and
AGND. The internal oscillator can be tuned across a wide
frequency range, providing greater system-design flex-
ibility. The graph shown in Figure 7 plots frequency vs.
RFOSC resistance.
Table 2 lists switching frequencies set with standard 1%
resistor values.
Spread-Spectrum Option
There is a version of the IC that enables the oscillator to
run in spread-spectrum mode. This improves EMI per-
formance by modulating the internal oscillator frequency
up/down ±3% relative to the operating frequency. If the
spread-spectrum option is desired, see the Ordering
Information table for the correct part number.
Setting the VBUS Current Limit (ILIM)
ILIM is a multifunctional pin that can be used to program
the VBUS current limit, the Apple divider-current, and the
foldback-current threshold. Table 3 lists the configuration
options for the ILIM pin.
Hold Mode
During device boot, the hold configuration is loaded with
a value that depends on decoding/reading the external
CONFIG resistor. For more details regarding the value
loaded as a function of resistors connected, see Table 4.
Table 2. Switching Frequencies
Table 3. Configuration Options for ILIM Pin
Table 4. Configuration Pin Options
FOSC (kHz)
224,320
300,840
380,500
493,100
595,800
756,000
1,000,500
1,479,000
2,237,000
RFOSC (kΩ)
133
97.6
73.2
59
48.7
38.3
28.7
19.1
12.7
ILIM PIN
CONNECTION
APPLE
DIVIDER (A)
ILIM
(A)
FOLDBACK
(A)
Connect to AGND
2.4
3.3
None
8,870Ω to AGND
2.4
3.3
2.41
15,800Ω to AGND
2.4
3.3
2.1
24,900Ω to AGND
2.4
2.75
2.1
35,700Ω to AGND
2.4
2.75
None
49,900Ω to AGND
2.1
2.41
None
68,100Ω to AGND
2.1
2.41
2.1
Connect to BIAS
1.0
2.1
None
CONFIG PIN
CONNECTION
LEVEL
(AT 50µA)
HOLD
MODE
HOLD TIME
(MIN)
Connect to AGND
Ground
Disabled
N/A
24,900Ω to AGND
1.25V
Enabled
30
Connect to BIAS
VBIAS
Enabled
60
Figure 7. Frequency vs. RFOSC Resistance
FREQUENCY vs. RFOSC
RFOSC (Ω)
120000
100000
80000
60000
40000
20000
2.5E+6
2.0E+6
1.5E+6
1.0E+6
500.0E+3
000.0E+0
0
140000
MAX20047
Dual 3A USB DCP Charger
www.maximintegrated.com
Maxim Integrated │ 22



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29


Datasheet Download

Go To PDF Page


Link URL



Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link to Datasheet    |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com