Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

LTC4006EGN-2 Datasheet(PDF) 10 Page - Linear Technology

Part # LTC4006EGN-2
Description  4A, High Efficiency, Standalone Li-Ion Battery Charger
Download  16 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4006EGN-2 Datasheet(HTML) 10 Page - Linear Technology

Back Button LTC4006EGN-2 Datasheet HTML 6Page - Linear Technology LTC4006EGN-2 Datasheet HTML 7Page - Linear Technology LTC4006EGN-2 Datasheet HTML 8Page - Linear Technology LTC4006EGN-2 Datasheet HTML 9Page - Linear Technology LTC4006EGN-2 Datasheet HTML 10Page - Linear Technology LTC4006EGN-2 Datasheet HTML 11Page - Linear Technology LTC4006EGN-2 Datasheet HTML 12Page - Linear Technology LTC4006EGN-2 Datasheet HTML 13Page - Linear Technology LTC4006EGN-2 Datasheet HTML 14Page - Linear Technology Next Button
Zoom Inzoom in Zoom Outzoom out
 10 / 16 page
background image
10
LTC4006
sn4006 4006is
APPLICATIO S I FOR ATIO
Charger Current Programming
The basic formula for charging current is:
I
mV
R
CHARGE MAX
SENSE
() =
100
Table 2. Recommended RSENSE Resistor Values
IMAX (A)
RSENSE (Ω) 1%
RSENSE (W)
1.0
0.100
0.25
2.0
0.050
0.25
3.0
0.033
0.5
4.0
0.025
0.5
Setting the Timer Resistor
The charger termination timer is designed for a range of
1hour to 3 hour with a
±15% uncertainty. The timer is
programmed by the resistor RRT using the following
equation:
tTIMER = 227 • RRT • 175pF (Refer to Figure 5)
It is important to keep the parasitic capacitance on the RT
pin to a minimum. The trace connecting RT to RRT should
be as short as possible.
CHG Status Output Pin
When the charge cycle starts, the CHG pin is pulled down
to ground by an internal N-channel MOSFET that can drive
more than 100
µA. When the charge current drops to 10%
of the full-scale current (C/10), the N-channel MOSFET is
turned off and a weak 25
µA current source to ground is
connected to the CHG pin. After a time out occurs, the pin
will go into a high impedance state. By using two different
value pull-up resistors, a microprocessor can detect three
states from this pin (charging, C/10 and stop charging).
See Figure 6.
Battery Detection
It is generally not good practice to connect a battery while
the charger is running. The timer is in an unknown state
and the charger could provide a large surge current into
the battery for a brief time. The circuit shown in Figure 7
keeps the charger shut down and the timer reset while a
battery is not connected.
Alternatively, a normally closed switch can be used to
detect when the battery is present (see Figure 8).
Figure 5. tTIMER vs RRT
RRT (kΩ)
100
0
20
60
80
100
200
140
200
300
350
4006 F05
40
160
180
120
150
250
400 450
500
LTC4006
CHG
33k
200k
4006 F06
VDD
3.3V
µP
IN
OUT
Figure 6. Microprocessor Interface
DCIN
ACP/SHDN
470k
LTC4006
ADAPTER
POWER
SWITCH CLOSED IF
BATTERY CONNECTED
4006 F07
Figure 7
DCIN
ACP/SHDN
LTC4006
ADAPTER
POWER
SWITCH OPEN WHEN
BATTERY CONNECTED
4006 F08
Figure 8


Similar Part No. - LTC4006EGN-2

ManufacturerPart #DatasheetDescription
logo
Linear Technology
LTC4006EGN-2 LINER-LTC4006EGN-2 Datasheet
266Kb / 20P
   4A, High Efficiency, Standalone Li-Ion Battery Charger
More results

Similar Description - LTC4006EGN-2

ManufacturerPart #DatasheetDescription
logo
Linear Technology
LTC4006 LINER-LTC4006_15 Datasheet
272Kb / 20P
   4A, High Efficiency, Standalone Li-Ion Battery Charger
LTC4007 LINER-LTC4007_1 Datasheet
273Kb / 24P
   4A, High Efficiency, Standalone Li-Ion Battery Charger
LTC4006 LINER-LTC4006_1 Datasheet
266Kb / 20P
   4A, High Efficiency, Standalone Li-Ion Battery Charger
LTC4007 LINER-LTC4007 Datasheet
241Kb / 20P
   4A, High Efficiency, Standalone Li Battery Charger
LTC4007-1 LINER-LTC4007-1_15 Datasheet
280Kb / 24P
   4A, High Efficiency, Li-Ion Battery Charger
LTC4007-1 LINER-LTC4007-1 Datasheet
274Kb / 24P
   4A, High Efficiency, Li-Ion Battery Charger
LTC4007 LINER-LTC4007_15 Datasheet
231Kb / 24P
   4A, High Effi ciency, Standalone Li-Ion Battery Charger
logo
Shanghai Consonance Ele...
CN3703 CONSONANCE-CN3703 Datasheet
238Kb / 11P
   Standalone Li-ion Battery Charger
CN3704 CONSONANCE-CN3704 Datasheet
238Kb / 11P
   Standalone Li-ion Battery Charger
CN3702 CONSONANCE-CN3702 Datasheet
239Kb / 11P
   Standalone Li-ion Battery Charger
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   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