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LTC4065AEDC#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
1
LTC4065/LTC4065A
4065fb
■
Wireless PDAs
■
Cellular Phones
■
Portable Electronics
Standalone 750mA Li-Ion
Battery Charger in 2 × 2 DFN
■
Complete Linear Charger in 2mm
××
××
× 2mm DFN
Package
■
C/10 Charge Current Detection Output
■
Timer Termination
■
Charge Current Programmable up to 750mA with
5% Accuracy
■
No External MOSFET, Sense Resistor or Blocking
Diode Required
■
Preset 4.2V Float Voltage with 0.6% Accuracy
■
Constant-Current/Constant-Voltage Operation with
Thermal Feedback to Maximize Charging Rate
Without Risk of Overheating
■
ACPR Pin Indicates Presence of Input Supply
(LTC4065A Only)
■
Charge Current Monitor Output for Gas Gauging
■
Automatic Recharge
■
Charges Single Cell Li-Ion Batteries Directly from
USB Port
■
20µA Supply Current in Shutdown Mode
■
Soft-Start Limits Inrush Current
■
Tiny 6-Lead (2mm × 2mm) DFN Package
FEATURES
DESCRIPTIO
U
APPLICATIO S
U
TYPICAL APPLICATIO
U
+
V
CC
R1
510Ω
R2*
1Ω
500mA
R3
2k
4065 TA01
4.2V
Li-Ion
BATTERY
V
IN
4.3V TO 5.5V
C1
1µF
*SERIES 1Ω RESISTOR ONLY NEEDED FOR INDUCTIVE INPUT SUPPLIES
LTC4065
CHRG
EN
BAT
PROG
GND
The LTC
®
4065 is a complete constant-current/constant-
voltage linear charger for single-cell lithium-ion batteries.
Its 2mm × 2mm DFN package and low external component
count make the LTC4065 especially well-suited for por-
table applications. Furthermore, LTC4065 is specifically
designed to work within USB power specifications.
The CHRG pin indicates when charge current has dropped
to ten percent of its programmed value (C/10). An internal
timer terminates charging according to battery manufac-
turer specifications.
No external sense resistor or blocking diode is required
due to the internal MOSFET architecture. Thermal feed-
back regulates charge current to limit the die temperature
during high power operation or high ambient temperature
conditions.
When the input supply (wall adapter or USB supply) is
removed, the LTC4065 automatically enters a low current
state, dropping battery drain current to less than 1µA. With
power applied, LTC4065 can be put into shutdown mode,
reducing the supply current to less than 20µA.
The full-featured LTC4065 also includes automatic re-
charge, low-battery charge conditioning (trickle charg-
ing), soft-start (to limit inrush current) and an open-drain
status pin to indicate the presence of an adequate input
voltage (LTC4065A only).
The LTC4065 is available in a tiny 6-lead, low profile
(0.75mm) 2mm × 2mm DFN package.
Standalone Li-Ion Battery Charger
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
2
LTC4065/LTC4065A
4065fb
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
CC
V
CC
Supply Voltage (Note 4) ● 3.75 5.5 V
I
CC
Quiescent V
CC
Supply Current V
BAT
= 4.5V (Forces I
BAT
and I
PROG
= 0) ● 120 250 µA
I
CCMS
V
CC
Supply Current in Shutdown V
EN
= 5V (LTC4065) or Float PROG (LTC4065A) ● 20 40 µA
I
CCUV
V
CC
Supply Current in Undervoltage V
CC
< V
BAT
, V
CC
= 3.5V, V
BAT
= 4V ● 611 µA
Lockout
V
FLOAT
V
BAT
Regulated Output Voltage I
BAT
= 2mA 4.175 4.2 4.225 V
I
BAT
= 2mA, 0°C < T
A
< 85°C 4.158 4.2 4.242 V
I
BAT
BAT Pin Current R
PROG
= 10k (0.1%), Current Mode ● 88 100 112 mA
R
PROG
= 2k (0.1%), Current Mode ● 475 500 525 mA
I
BMS
Battery Drain Current in Shutdown V
EN
= V
CC
(LTC4065), ● –1 0 1 µA
Mode V
PROG
> V
MS,PROG
(LTC4065A)
I
BUV
Battery Drain Current in Undervoltage V
CC
= 3.5V, V
BAT
= 4V ● 014 µA
Lockout
V
UVLO
V
CC
Undervoltage Lockout Voltage V
CC
Rising ● 3.4 3.6 3.8 V
V
CC
Falling ● 2.8 3.0 3.2 V
V
PROG
PROG Pin Voltage R
PROG
= 2k, I
PROG
= 500µA ● 0.98 1 1.02 V
R
PROG
= 10k, I
PROG
= 100µA ● 0.98 1 1.02 V
V
ASD
Automatic Shutdown Threshold (V
CC
– V
BAT
), V
CC
Low to High 60 82 100 mV
Voltage (V
CC
– V
BAT
), V
CC
High to Low 15 32 45 mV
V
MSH
Manual Shutdown High Voltage V
EN
Rising 1 V
(LTC4065)
V
MSL
Manual Shutdown Low Voltage V
EN
Falling 0.6 V
(LTC4065)
R
EN
EN Pin Input Resistance ● 0.95 1.5 3.3 MΩ
V
CC
t < 1ms and Duty Cycle < 1% ................. –0.3V to 7V
Steady State ........................................... –0.3V to 6V
BAT, CHRG ................................................. –0.3V to 6V
EN (LTC4065), ACPR (LTC4065A).. –0.3V to V
CC
+ 0.3V
PROG.............................................. –0.3V to V
CC
+ 0.3V
BAT Short-Circuit Duration ...........................Continuous
BAT Pin Current ................................................. 800mA
PROG Pin Current ............................................... 800µA
Junction Temperature (Note 6)............................ 125°C
Operating Temperature Range (Note 2) .. –40°C to 85°C
Storage Temperature Range ................ –65°C to 125°C
ABSOLUTE AXI U RATI GS
WWWU
PACKAGE/ORDER I FOR ATIO
UU
W
(Note 1)
The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are T
A
= 25°C.
V
CC
= 5V, V
BAT
= 3.8V, V
EN
= 0V (LTC4065 only) unless otherwise specified. (Note 2)
ELECTRICAL CHARACTERISTICS
T
JMAX
= 125°C, θ
JA
= 60°C/W (NOTE 3)
EXPOSED PAD (PIN 7) IS GND, MUST BE SOLDERED TO PCB
*EN PIN 5 ON LTC4065EDC, ACPR PIN 5 ON LTC4065AEDC
ORDER PART NUMBER
DC PART MARKING
Consult LTC Marketing for parts specified with wider operating temperature ranges.
LTC4065EDC
LTC4065AEDC
LBPG
LBVJ
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
TOP VIEW
7
DC PACKAGE
6-LEAD (2mm × 2mm) PLASTIC DFN
4
5
6
3
2
1GND
CHRG
BAT
PROG
EN/ACPR*
V
CC
3
LTC4065/LTC4065A
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SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
I
PROG
PROG Pin Pull-Up Current V
PROG
> 1V 3 µA
(LTC4065A)
V
MS,PROG
PROG Shutdown Threshold Voltage V
PROG
Rising ● 3.7 4 4.3 V
(LTC4065A Only)
t
SS
Soft-Start Time 180 µs
I
TRKL
Trickle Charge Current V
BAT
= 2V, R
PROG
= 2k (0.1%) 35 50 65 mA
V
TRKL
Trickle Charge Threshold Voltage V
BAT
Rising ● 2.7 2.9 3.05 V
V
TRHYS
Trickle Charge Hysteresis Voltage 90 mV
∆V
RECHRG
Recharge Battery Threshold Voltage V
FLOAT
– V
RECHRG
, 0°C < T
A
< 85°C 70 100 130 mV
∆V
UVCL1
(V
CC
– V
BAT
) Undervoltage Current I
BAT
= 90% Programmed Charge Current 180 220 330 mV
∆V
UVCL2
Limit I
BAT
= 10% Programmed Charge Current 90 125 150 mV
t
TIMER
Termination Timer ● 3 4.5 6 Hrs
Recharge Time ● 1.5 2.25 3 Hrs
Low-Battery Trickle Charge Time V
BAT
= 2.5V ● 0.75 1.125 1.5 Hrs
V
ACPR
ACPR Pin Output Low Voltage I
ACPR
= 5mA ● 60 105 mV
(LTC4065A)
I
ACPR
ACPR Pin Input Current (LTC4065A) V
CC
= 4V, V
ACPR
= 4V, V
BAT
= 4.5V ● 01 µA
V
CHRG
CHRG Pin Output Low Voltage I
CHRG
= 5mA ● 60 105 mV
I
CHRG
CHRG Pin Input Current V
BAT
= 4.5V, V
CHRG
= 5V ● 01 µA
I
C/10
End of Charge Indication Current R
PROG
= 2k (Note 5) ● 0.085 0.1 0.115 mA/mA
Level
T
LIM
Junction Temperature in Constant 115 °C
Temperature Mode
R
ON
Power FET “ON” Resistance I
BAT
= 200mA 450 mΩ
(Between V
CC
and BAT)
f
BADBAT
Defective Battery Detection CHRG 2 Hz
Pulse Frequency
D
BADBAT
Defective Battery Detection CHRG 75 %
Pulse Frequency Duty Ratio
The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are T
A
= 25°C.
V
CC
= 5V, V
BAT
= 3.8V, V
EN
= 0V (LTC4065 only) unless otherwise specified. (Note 2)
ELECTRICAL CHARACTERISTICS
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LTC4065/LTC4065A are guaranteed to meet performance
specifications from 0°C to 70°C. Specifications over the –40°C to 85°C
operating temperature range are assured by design, characterization and
correlation with statistical process controls.
Note 3: Failure to solder the exposed backside of the package to the PC
board ground plane will result in a thermal resistance much higher than
rated.
Note 4: Although the LTC4065 functions properly at 3.75V, full charge
current requires an input voltage greater than the desired final battery
voltage per the ∆V
UVCL1
specification.
Note 5: I
C/10
is expressed as a fraction of measured full charge current
with indicated PROG resistor.
Note 6: This IC includes overtemperature protection that is intended to
protect the device during momentary overload conditions. Junction
temperature will exceed 125°C when overtemperature protection is active.
Continuous operation above the specified maximum operating junction
temperature may impair device reliability.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

LTC4065AEDC#TRPBF

Mfr. #:
Buy LTC4065AEDC#TRPBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Battery Management Standalone 750mA Li-Ion Battery Charger in DFN
Lifecycle:
New from this manufacturer.
Delivery:
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