LTC4150IMS Linear Technology, LTC4150IMS Datasheet
![IC COUNTER/GAUGE BATTERY 10MSOP](/photos/1/36/13608/10-msop_05-08-1661_sml.jpg)
LTC4150IMS
Specifications of LTC4150IMS
Available stocks
Related parts for LTC4150IMS
LTC4150IMS Summary of contents
Page 1
... The LTC4150 is intended for 1-cell or 2-cell Li-Ion and 3-cell to 6-cell NiCd or NiMH applications. L, LT, LTC, LTM, Linear Technology, the Linear logo, Burst Mode are registered trademarks and ThinSOT and PowerPath are trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. ...
Page 2
... F Output Voltage Range Digital Outputs (INT, POL) ....................... –0. Operating Temperature Range LTC4150CMS ........................................... 0°C to 70°C LTC4150IMS .......................................–40°C TO 85°C Storage Temperature Range ................... –65°C to 150°C Lead Temperature (Soldering, 10 sec) .................. 300°C ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL ...
Page 3
ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T SYMBOL PARAMETER Power Supply Current I Supply Current, Operating DD I Supply Current, Shutdown DD(SD) AC Characteristics G Voltage to Frequency Gain VF Gain Variation with Supply ΔG VF(VDD) Gain ...
Page 4
LTC4150 TYPICAL PERFORMANCE CHARACTERISTICS Voltage to Frequency Gain vs Supply Voltage +1.00 +0.75 +0.50 +0. 25mV SENSE 50mV SENSE –0.25 –0.50 –0.75 –1. (V) DD 4150 G01 ...
Page 5
PIN FUNCTIONS + SENSE (Pin 1): Positive Sense Input. This is the nonin- verting current sense input. Connect SENSE and charger side of the sense resistor. Full-scale current + sense input is 50mV. SENSE must be within 60mV of V ...
Page 6
LTC4150 BLOCK DIAGRAM CHARGER LOAD SENSE 200k SENSE F 4 – 200k I BAT 2k 2 – S2 SENSE GND 7 TIMING DIAGRAMS CLR 50% ...
Page 7
OPERATION Charge is the time integral of current. The LTC4150 mea- sures battery current by monitoring the voltage developed across a sense resistor and then integrates this information in several stages to infer charge. The Block Diagram shows the stages ...
Page 8
LTC4150 APPLICATIONS INFORMATION SENSE VOLTAGE INPUT AND FILTERS Since the overall integration time is set by internally trim- ming the LTC4150, no external timing capacitor or trimming is necessary. The only external component that affects the transfer function of interrupts ...
Page 9
APPLICATIONS INFORMATION INT, POL and CLR INT asserts low each time the LTC4150 measures a unit of charge. At the same time, POL is latched to indicate the polarity of the charge unit. The integrator and counter continue running, so ...
Page 10
LTC4150 APPLICATIONS INFORMATION AUTOMATIC CHARGE COUNT INTERRUPT AND CLEAR In applications where a CLR pulse is unavailable, it’s easy to make the LTC4150 run autonomously, as shown in Figures 5 and 6. If the microcontroller V is less than or ...
Page 11
APPLICATIONS INFORMATION PC BOARD LAYOUT SUGGESTIONS Keep all traces as short as possible to minimize noise and inaccuracy. The supply bypass capacitor C2 should be placed close to the LTC4150. The 4.7μF fi lter capacitor + C should be placed ...
Page 12
LTC4150 PACKAGE DESCRIPTION 5.23 (.206) MIN 0.305 0.038 (.0120 .0015) TYP RECOMMENDED SOLDER PAD LAYOUT 0.254 (.010) GAUGE PLANE 0.18 (.007) NOTE: 1. DIMENSIONS IN MILLIMETER/(INCH) 2. DRAWING NOT TO SCALE 3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR ...
Page 13
... Added Conditions to Power Supply Current in Electrical Characteristics Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...
Page 14
... Fresh, Use with the LTC4053, LTC1733, LTC4054 More Effi cient Diode OR’ing, Automatic Switching Between DC Sources, Simplifi ed Load Sharing, 3V ≤ V www.linear.com ● CD40110B CD40110B CD40110B CD40110B CD40110B 4150 F09 ≤ 28V IN LT 0210 REV C • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2003 4150fc ...