Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

LTC4069EDC Datasheet(PDF) 6 Page - Linear Integrated Systems

Part # LTC4069EDC
Description  Standalone 750mA Li-Ion Battery Charger in 2 2 DFN with NTC Thermistor Input
Download  18 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  LINEAR [Linear Integrated Systems]
Direct Link  http://www.linearsystems.com
Logo LINEAR - Linear Integrated Systems

LTC4069EDC Datasheet(HTML) 6 Page - Linear Integrated Systems

Back Button LTC4069EDC Datasheet HTML 2Page - Linear Integrated Systems LTC4069EDC Datasheet HTML 3Page - Linear Integrated Systems LTC4069EDC Datasheet HTML 4Page - Linear Integrated Systems LTC4069EDC Datasheet HTML 5Page - Linear Integrated Systems LTC4069EDC Datasheet HTML 6Page - Linear Integrated Systems LTC4069EDC Datasheet HTML 7Page - Linear Integrated Systems LTC4069EDC Datasheet HTML 8Page - Linear Integrated Systems LTC4069EDC Datasheet HTML 9Page - Linear Integrated Systems LTC4069EDC Datasheet HTML 10Page - Linear Integrated Systems Next Button
Zoom Inzoom in Zoom Outzoom out
 6 / 18 page
background image
LTC4069
6
4069fc
For more information www.linear.com/LTC4069
pin FuncTions
GND (Pin 1): Ground.
CHRG (Pin 2): Open-Drain Charge Status Output. The
charge status indicator pin has three states: pull-down,
pulse at 2Hz and high impedance state. This output can
be used as a logic interface or as an LED driver. When
the battery is being charged, the CHRG pin is pulled low
by an internal N-channel MOSFET. When the charge cur-
rent drops to 10% of full-scale current, the CHRG pin is
forced to a high impedance state. If the battery voltage
remains below 2.9V for one quarter of the charge time, the
battery is considered defective and the CHRG pin pulses
at a frequency of 2Hz (75% duty cycle). When the NTC
pin voltage rises above 0.76 • VCC or drops below 0.35
• VCC, the CHRG pin pulses at a frequency of 2Hz (25%
duty cycle).
BAT (Pin 3): Charge Current Output. Provides charge cur-
rent to the battery and regulates the final float voltage to
4.2V. An internal precision resistor divider on this pin sets
the float voltage and is disconnected in shutdown mode.
VCC (Pin 4): Positive Input Supply Voltage. This pin
provides power to the charger. VCC can range from 3.75V
to 5.5V. This pin should be bypassed with at least a 1µF
capacitor. When VCC is within 32mV of the BAT pin volt-
age, the LTC4069 enters shutdown mode, dropping IBAT
to about 1µA.
NTC (Pin 5): Input to the NTC (Negative Temperature
Coefficient) Thermistor Temperature Monitoring Circuit.
Under normal operation, connect a thermistor from the
NTC pin to ground and a resistor of equal value from the
NTC pin to VCC. When the voltage at this pin drops below
0.35 • VCC at hot temperatures or rises above 0.76 • VCC
at cold, charging is suspended, the internal timer is frozen
and the CHRG pin output will start to pulse at 2Hz. Pulling
this pin below 0.016 • VCC disables the NTC feature. There
isapproximately3°Coftemperaturehysteresisassociated
with each of the input comparator’s thresholds.
PROG (Pin 6): Charge Current Program and Charge
Current Monitor Pin. Connecting a 1% resistor, RPROG,
to ground programs the charge current. When charging
in constant-current mode, this pin servos to 1V. In all
modes, the voltage on this pin can be used to measure
the charge current using the following formula:
IBAT =
VPROG
RPROG
•1000
FloatingthePROGpinputsthechargerinshutdownmode.
Inshutdownmode,theLTC4069haslessthan20µAsupply
current and about 1µA battery drain current.
Exposed Pad (Pin 7): Ground. The Exposed Pad must
be soldered to the PCB ground to provide both electrical
contact and rated thermal performance.


Similar Part No. - LTC4069EDC

ManufacturerPart #DatasheetDescription
logo
Linear Technology
LTC4069EDC-4.4-PBF LINER-LTC4069EDC-4.4-PBF Datasheet
196Kb / 16P
   Standalone 750mA Li-Ion Battery Charger in 2 횞 2 DFN with NTC Thermistor Input
LTC4069EDC-4.4-TRPBF LINER-LTC4069EDC-4.4-TRPBF Datasheet
196Kb / 16P
   Standalone 750mA Li-Ion Battery Charger in 2 횞 2 DFN with NTC Thermistor Input
LTC4069EDC-PBF LINER-LTC4069EDC-PBF Datasheet
193Kb / 16P
   Standalone 750mA Li-Ion Battery Charger in 2 횞 2 DFN with NTC Thermistor Input
LTC4069EDC-TRPBF LINER-LTC4069EDC-TRPBF Datasheet
193Kb / 16P
   Standalone 750mA Li-Ion Battery Charger in 2 횞 2 DFN with NTC Thermistor Input
More results

Similar Description - LTC4069EDC

ManufacturerPart #DatasheetDescription
logo
Linear Technology
LTC4069 LINER-LTC4069_15 Datasheet
578Kb / 18P
   Standalone 750mA Li-Ion Battery Charger in 2 2 DFN with NTC Thermistor Input
LTC4069-4.4 LINER-LTC4069-4.4 Datasheet
196Kb / 16P
   Standalone 750mA Li-Ion Battery Charger in 2 횞 2 DFN with NTC Thermistor Input
LTC4069 LINER-LTC4069 Datasheet
193Kb / 16P
   Standalone 750mA Li-Ion Battery Charger in 2 횞 2 DFN with NTC Thermistor Input
logo
Linear Integrated Syste...
LTC4065LEDC LINEAR-LTC4065LEDC Datasheet
206Kb / 16P
   Standalone 750mA Li-Ion Battery Charger in 2 2 DFN
logo
Linear Technology
LTC4065-4.4 LINER-LTC4065-4.4 Datasheet
189Kb / 16P
   Standalone 750mA Li-Ion Battery Charger in 2 횞 2 DFN
LTC4065 LINER-LTC4065 Datasheet
188Kb / 16P
   Standalone 750mA Li-Ion Battery Charger in 2 x 2 DFN
LTC4065EDC-4.4 LINER-LTC4065EDC-4.4 Datasheet
196Kb / 16P
   Standalone 750mA Li-Ion Battery Charger in 2 x 2 DFN
LTC4065LXEDC LINER-LTC4065LXEDC Datasheet
196Kb / 16P
   Standalone 750mA Li-Ion Battery Charger in 2 x 2 DFN
LTC4065L LINER-LTC4065L Datasheet
173Kb / 16P
   Standalone 250mA Li-Ion Battery Charger in 2 x 2 DFN
LTC4065-4.4 LINER-LTC4065-4.4_15 Datasheet
189Kb / 16P
   Standalone 750mA Li-Ion Battery Charger
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18


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