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LTC4012CUF#TRPBF

Description
IC BATT CHRGR MC HI-EFF 20-QFN
CategoryPower/power management    The power supply circuit   
File Size327KB,8 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance
Download Datasheet Parametric View All

LTC4012CUF#TRPBF Overview

IC BATT CHRGR MC HI-EFF 20-QFN

LTC4012CUF#TRPBF Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?conform to
MakerLinear ( ADI )
Parts packaging codeQFN
package instructionHVQCCN, LCC20,.16SQ,20
Contacts20
Manufacturer packaging codeUF
Reach Compliance Codecompliant
ECCN codeEAR99
Other featuresALSO OPERATES IN ADJUSTABLE MODE FROM 2V TO 28V
Analog Integrated Circuits - Other TypesSWITCHING CONTROLLER
control modeCURRENT-MODE
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage28 V
Minimum input voltage6 V
Nominal input voltage20 V
JESD-30 codeS-PQCC-N20
JESD-609 codee3
length4 mm
Humidity sensitivity level1
Number of functions1
Number of terminals20
Maximum operating temperature85 °C
Minimum operating temperature
Nominal output voltage5 V
Package body materialPLASTIC/EPOXY
encapsulated codeHVQCCN
Encapsulate equivalent codeLCC20,.16SQ,20
Package shapeSQUARE
Package formCHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)260
power supply12 V
Certification statusNot Qualified
Maximum seat height0.8 mm
Nominal supply voltage (Vsup)12 V
surface mountYES
Switch configurationPUSH-PULL
Maximum switching frequency633 kHz
technologyCMOS
Temperature levelOTHER
Terminal surfaceMatte Tin (Sn)
Terminal formNO LEAD
Terminal pitch0.5 mm
Terminal locationQUAD
Maximum time at peak reflow temperature30
width4 mm
DEMO MANUAL DC1614A
LTC4012
High Current High Efficiency
Multi-Chemistry Battery Charger
with PowerPath Control
compatible with this charger. The optional DC1223A-B
SMBus-to-RS232 Serial port adapter and associated
software can be used to monitor a smart battery for dem-
onstration purposes only. Contact your Linear Technology
representative to order a DC1223A-B.
DC1614 features an optional circuit for sealed lead acid
(SLA) batteries for constant-voltage charging with tem-
perature compensation and fast/float voltage toggling.
DC1614 also features layout for extra components and
external gate drivers for improved efficiency at higher
charge currents.
This demo board is capable of supporting the LTC4012 and
LTC4012-3 with a simple IC swap-out. See the Schematic
Diagram.
Design files for this circuit board are available at
http://www.linear.com/demo
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
PowerPath is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
DESCRIPTION
Demonstration circuit 1614 features the LTC4012CUF a
,
multi-chemistry single battery charger controller with
PowerPath™ control. The input supply voltage is 13.5V to
20V and is initially configured for a current limit of 10A.
The charger float voltage is programmed by jumpers to
support 1- to 4- series cells of both Li-Ion/Polymer and
Li-iron phosphate (LiFePO
4
) at 4.2V/cell and 3.6V/cell,
for a total of eight settings. The demo board is initially
configured for constant-voltage charging of a 12.6V Li-Ion/
Polymer battery and constant-current charging at 8A,
though current derating may be necessary due to certain
operating conditions.
Charging can be enabled/disabled by properly setting
the shutdown jumper. LED indicators for
CHG, ICL, ACP,
and C/10 display the current state of the charger system.
Although this charger is not a smart battery charger, a
popular smart battery connector is provided that can be
used for further data-logging with the optional DC1223A-B
demo board and software. Note that a smart battery is not
required to use this board; however, smart batteries are
PERFORMANCE SUMMARY
PARAMETER
Minimum Input Voltage
Maximum Input Voltage
Input Current Limit
Default Float Voltage V
BAT
Maximum Charge Current
CONDITIONS
Specifications are at T
A
= 25°C.
VALUE
13.5V
MIN
When Using 12.6V Li-Ion/Polymer. Recommend 15V
20V
10A
DC
±4%
12.6V ±1%
8A
DC
±5%
V
IN
> V
BAT
Float Voltage
Limited by Input Capacitor Voltage Rating
Set by R1 (100mV/R1)
Jumper Selectable: 4.2V/Cell or 3.6V/Cell
V
IN
> V
BAT
dc1614af
1

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