Electronic Components Datasheet Search
  English  ▼

X  

Preview PDF HTML

DA9021 Datasheet(PDF) 135 Page - Dialog Semiconductor

Part # DA9021
Description  System PMIC with high efficiency USB power manager
PDF  142 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  DIALOG [Dialog Semiconductor]
Direct Link  http://www.dialog-semiconductor.com/
Logo DIALOG - Dialog Semiconductor

DA9021 Datasheet(HTML) 135 Page - Dialog Semiconductor

Back Button DA9021 Datasheet HTML 131Page - Dialog Semiconductor DA9021 Datasheet HTML 132Page - Dialog Semiconductor DA9021 Datasheet HTML 133Page - Dialog Semiconductor DA9021 Datasheet HTML 134Page - Dialog Semiconductor DA9021 Datasheet HTML 135Page - Dialog Semiconductor DA9021 Datasheet HTML 136Page - Dialog Semiconductor DA9021 Datasheet HTML 137Page - Dialog Semiconductor DA9021 Datasheet HTML 138Page - Dialog Semiconductor DA9021 Datasheet HTML 139Page - Dialog Semiconductor Next Button
Zoom Inzoom in Zoom Outzoom out
 135 / 142 page
background image
DA9021/22
System PMIC with high efficiency USB power manager
Company confidential
Datasheet
Revision 2.5
17-Feb-2017
CFR0011-120-00 Rev 5
135 of 142
© 2017 Dialog Semiconductor
23.2 Inductor selection
Inductors should be selected based upon the following parameters:
● rated max. current (usually a coil provides two current limits):
○ the first limit specifies the maximum current at which the inductance derating (due to
saturation effects) is limited to be within a specified tolerance (typical 20 % or 30 %) of the
peak current
○ the second limit is defined by the maximum power dissipation and is applied to the effective
current
● DC resistance
○
critical to converter efficiency and should therefore be minimised
● inductance
○ given by converter electrical characteristics; is 4.7 µH for all DA9021 switched mode
converters
Table 153: Recommended inductor types
Application
Value
Size
Imax
Tolerance
DC res.
Type
BUCKMEM, BUCKPRO,
BUCKCORE
3x
4.7 µH
3x3x1.2 mm
1.2 A
+/-20 %
0.13
Ω
typ.
TDK VLS3012T-
4R7M1R0
Merged
BUCKCORE/BUCKPRO
1x
2.2 µH
3x3x1.2 mm
1.7 A
+/-20 %
0.08
Ω
typ.
TDK VLS3012T-
2R2M1R5
CHARGER BUCK
1x
4.7 µH
3x3x1.2 mm
1.2 A
+/-20 %
0.13
Ω
typ.
TDK VLS3012T-
4R7M1R0
23.3 Resistors
Table 154: Recommended resistor types
Application
Value
Size
Tolerance
P max
Type
IREF bias
current
reference
200k
Ω
0402
+/-1 %
100 mW
Panasonic
ERJ2RKF2003x
23.4 External pass transistors and Schottky diodes
Table 155: Example FETs:
Application
Package
Type
VBUS overvoltage protection FET
SOT-23
CSD25301W1015, PMV65XP
VBUS/dual overvoltage protection
FET
PowerPAK1212-8 3.3x3.3x1 mm
Vishay Siliconix Si7911DN
System load switch (active diode)
FET
SOT-23 3x2.6x1 mm
Vishay Siliconix Si2333CDS
23.5 Battery pack temperature sensor (NTC)
In order to achieve reasonable accuracy over the relevant temperature range (for example, 0 °C to
50 °C for charging) by using the internal 50 µA current source, the recommended NTC should have a
nominal resistance of 10 k
Ω at 25 °C and its resistance should not exceed 50 kΩ within this range.



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 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100  ...More


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