Zakładka z wyszukiwarką danych komponentów
  Polish  ▼
ALLDATASHEET.PL

X  

Preview PDF HTML

SS8028 Arkusz danych(PDF) 6 Page - Silicon Standard Corp.

Numer części SS8028
Szczegółowy opis  Micro-Power Step-up DC/DC Converter
PDF  9 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Producent  SSC [Silicon Standard Corp.]
Strona internetowa  http://www.siliconstandard.com
Logo SSC - Silicon Standard Corp.

SS8028 Arkusz danych(HTML) 6 Page - Silicon Standard Corp.

  SS8028 Datasheet HTML 1Page - Silicon Standard Corp. SS8028 Datasheet HTML 2Page - Silicon Standard Corp. SS8028 Datasheet HTML 3Page - Silicon Standard Corp. SS8028 Datasheet HTML 4Page - Silicon Standard Corp. SS8028 Datasheet HTML 5Page - Silicon Standard Corp. SS8028 Datasheet HTML 6Page - Silicon Standard Corp. SS8028 Datasheet HTML 7Page - Silicon Standard Corp. SS8028 Datasheet HTML 8Page - Silicon Standard Corp. SS8028 Datasheet HTML 9Page - Silicon Standard Corp.  
Zoom Inzoom in Zoom Outzoom out
 6 / 9 page
background image
www.SiliconStandard.com
6 of 9
SS8028
BLOCK DIAGRAM
APPLICATIONS INFORMATION
The SS8028 is a boost converter with an integrated
N-channel MOSFET (refer to the block diagram above).
The boost cycle is initiated when the FB pin voltage drops
below 1.2V and the MOSFET turns on. During the period
that the MOSFET is on, the inductor current ramps up
until the 350mA current limit is reached. Then the
MOSFET turns off and the inductor current flows through
the external schottky diode, ramping down to zero.
During the MOSFET off period, the inductor current
charges the output capacitor and the output voltage
climbs. This pumping mechanism continues cycle by
cycle until the FB pin voltage exceeds 1.2V and the
non-switching mode starts. In this mode, the SS8028
consumes as little as 20uA typically, saving on battery
power.
Choosing an Inductor
There are several recommended inductors that work
well with the SS8028 in Table 1. Use the equations
and recommendations in the next few sections to find
the proper inductance value for your design.
TABLE 1. RECOMMENDED INDUCTORS
PART
VALUE(uH)
MAX DCR ?
Ω)
VENDOR
LQH3C4R7
LQH3C100
LQH3C220
4.7
10
22
0.26
0.30
0.92
Murata
www.murata.com
CD43-4R7
CD43-100
CDRH4D18-4R7
CDRH4D18-100
4.7
10
4.7
10
0.11
0.18
0.16
0.20
Sumida
www.sumida.com
DO1608-472
DO1608-103
DO1608-223
4.7
10
22
0.09
0.16
0.37
Coilcraft
www.coilcraft.com
Inductor Selection – Boost Regulator
The appropriate inductance value for the boost regulator
application may be calculated from the following
equation. Select a standard inductor close to this value.
VOUT-VIN(MIN)+VD
L =
ILIM
x tOFF
+
+
VREF
BIAS
SHUTDOWN
LOGIC
C2
SW
L1
SHDN
VCC
C1
R1
R2
VOUT
FB
ERROR
COMP
1.2 V
en _sw
GND
PUMP CONTROL
OC
COMP
DRIVER
T OFF PULSE
CONTROL
V OUT
V IN
+
+
VREF
BIAS
SHUTDOWN
LOGIC
C2
SW
L1
SHDN
VCC
C1
R1
R2
VOUT
FB
ERROR
COMP
1.2 V
en _sw
GND
PUMP CONTROL
OC
COMP
DRIVER
T OFF PULSE
CONTROL
V OUT
V IN
Rev.2.02 12/06/2003



Html Pages

1 2 3 4 5 6 7 8 9


Arkusz danych Pobierz

Go To PDF Page


Link URL



Czy Alldatasheet okazała się pomocna?  [ DONATE ] 

O Alldatasheet   |   Reklama   |   Kontakt   |   Polityka prywatności   |   Link do karty katalogowej    |   Linki   |   Lista producentów
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