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LTC4001EUF#TRPBF

Description
Switching Battery Charger Li-Ion/Li-Pol 2000mA 4.2V 16-Pin QFN EP T/R
CategoryBattery management   
File Size199KB,20 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Parametric Compare View All

LTC4001EUF#TRPBF Overview

Switching Battery Charger Li-Ion/Li-Pol 2000mA 4.2V 16-Pin QFN EP T/R

LTC4001EUF#TRPBF Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusActive
HTS8542.39.00.01
TypeSwitching Battery Charger
Battery TypeLi-Ion|Li-Pol
Maximum Supply Current (mA)2
Minimum Operating Supply Voltage (V)4
Maximum Operating Supply Voltage (V)5.5
Output Voltage (V)4.2
Output Current (mA)2000(Max)
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
Supplier Temperature GradeExtended
PackagingTape and Reel
Pin Count16
Standard Package NameQFN
Supplier PackageQFN EP
MountingSurface Mount
Package Height0.75(Max)
Package Length4
Package Width4
PCB changed16
Lead ShapeNo Lead
LTC4001
2A Synchronous
Buck Li-Ion Charger
FEATURES
DESCRIPTIO
Low Power Dissipation
2A Maximum Charge Current
No External MOSFETs, Sense Resistor or Blocking
Diode Required
Remote Sensing at Battery Terminals
Programmable Charge Termination Timer
Preset 4.2V Float Voltage with
±0.5%
Accuracy
Programmable Charge Current Detection/Termination
Automatic Recharge
Thermistor Input for Temperature Qualified Charging
Compatible with Current Limited Wall Adapters
Low Profile 16-Lead (4mm
×
4mm) QFN Package
The LTC
®
4001 is a 2A Li-Ion battery charger intended for
5V wall adapters. It utilizes a 1.5MHz synchronous buck
converter topology to reduce power dissipation during
charging. Low power dissipation, an internal MOSFET and
sense resistor allow a physically small charger that can be
embedded in a wide range of handheld applications. The
LTC4001 includes complete charge termination circuitry,
automatic recharge and a
±1%
4.2V float voltage. Input
short-circuit protection is included so no blocking diode is
required.
Battery charge current, charge timeout and end-of-charge
indication parameters are set with external components.
Additional features include shorted cell detection, tempera-
ture qualified charging and overvoltage protection. The
LTC4001 is available in a low profile (0.75mm) 16-lead
(4mm
×
4mm) QFN package.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
APPLICATIO S
Handheld Battery-Powered Devices
Handheld Computers
Charging Docks and Cradles
Digital Cameras
Smart Phones
TYPICAL APPLICATIO
2A Single Cell Li-Ion Battery Charger
1.5µH
SW
V
IN
4.5V TO 5.5V
10µF
PGND
CHRG
NTC
FAULT
EN
PROG IDET TIMER
0.22µF
274Ω
0.1µF
4001 TA01a
SENSE
10µF
+
4.2V
Li-Ion
TOTAL APPLICATION CIRCUIT POWER
DISSIPATION (W)
V
INSENSE
PV
IN
BATSENS
BAT
LTC4001
SS GNDSENS
U
Power Loss vs V
BAT
Charging (PWM Mode)
1.25
1.00
0.75
0.50
0.25
V
IN
= 5V
2A CHARGER
0
3
3.25
3.75
3.5
V
BAT
(V)
4
4.25
4001 TA01b
U
U
4001f
1

LTC4001EUF#TRPBF Related Products

LTC4001EUF#TRPBF LTC4001EUF#PBF LTC4001EUF
Description Switching Battery Charger Li-Ion/Li-Pol 2000mA 4.2V 16-Pin QFN EP T/R Switching Battery Charger Li-Ion/Li-Pol 2000mA 4.2V 16-Pin QFN EP Tube Switching Battery Charger Li-Ion/Li-Pol 2000mA 4.2V 16-Pin QFN EP
EU restricts the use of certain hazardous substances Compliant Compliant Not Compliant
ECCN (US) EAR99 EAR99 EAR99
Part Status Active Active Unconfirmed
Type Switching Battery Charger Switching Battery Charger Switching Battery Charger
Battery Type Li-Ion|Li-Pol Li-Ion|Li-Pol Li-Pol|Li-Ion
Maximum Supply Current (mA) 2 2 2
Minimum Operating Supply Voltage (V) 4 4 4
Maximum Operating Supply Voltage (V) 5.5 5.5 5.5
Output Voltage (V) 4.2 4.2 4.2
Output Current (mA) 2000(Max) 2000(Max) 2000(Max)
Minimum Operating Temperature (°C) -40 -40 -40
Maximum Operating Temperature (°C) 85 85 85
Supplier Temperature Grade Extended Extended Extended
Pin Count 16 16 16
Standard Package Name QFN QFN QFN
Supplier Package QFN EP QFN EP QFN EP
Mounting Surface Mount Surface Mount Surface Mount
Package Height 0.75(Max) 0.75(Max) 0.75(Max)
Package Length 4 4 4
Package Width 4 4 4
PCB changed 16 16 16
Lead Shape No Lead No Lead No Lead
HTS 8542.39.00.01 8542.39.00.01 -
Packaging Tape and Reel Tube -
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