Datasheet
LTC4081
2
4081f
PIN CONFIGURATION
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC4081EDD#PBF LTC4081EDD#TRPBF LDBX 10-Lead (3mm × 3mm) DFN 0°C to 70°C
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based fi nish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifi cations, go to: http://www.linear.com/tapeandreel/
The ● denotes specifi cations which apply over the full operating tempera-
ture range, otherwise specifi cations are at T
A
= 25°C, V
CC
= 5V, V
BAT
= 3.8V, V
⎯
E
⎯
N
⎯
_
⎯
C
⎯
H
⎯
R
⎯
G
= 0V, V
NTC
= 0V, V
EN_BUCK
= V
BAT
, V
MODE
= 0V.
(Note 2)
ELECTRICAL CHARACTERISTICS
V
CC
, t < 1ms and Duty Cycle < 1% .............. – 0.3V to 7V
V
CC
Steady State ......................................... – 0.3V to 6V
BAT,
⎯
C
⎯
H
⎯
R
⎯
G .................................................. – 0.3V to 6V
⎯
E
⎯
N
⎯
_
⎯
C
⎯
H
⎯
R
⎯
G, PROG, NTC ...................– 0.3V to V
CC
+ 0.3V
MODE, EN_BUCK .......................... – 0.3V to V
BAT
+ 0.3V
FB ............................................................... – 0.3V to 2V
(Note 1)
ABSOLUTE AXI U RATI GS
W
WW
U
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
CC
Battery Charger Supply Voltage (Note 4)
●
3.75 5 5.5 V
V
BAT
Input Voltage for the Switching
Regulator
(Note 5)
●
2.7 3.8 4.5 V
I
CC
Quiescent Supply Current (Charger On,
Switching Regulator Off)
V
BAT
= 4.5V (Forces I
BAT
and I
PROG
= 0),
V
EN_BUCK
= 0
●
110 300 μA
I
CC_SD
Supply Current in Shutdown (Both
Battery Charger and Switching
Regulator Off)
V
⎯
E
⎯
N
⎯
_
⎯
C
⎯
H
⎯
R
⎯
G
= 5V, V
EN_BUCK
= 0, V
CC
> V
BAT
V
⎯
E
⎯
N
⎯
_
⎯
C
⎯
H
⎯
R
⎯
G
= 4V, V
EN_BUCK
= 0, V
CC
(3.5V) <
V
BAT
(4V)
●
5
2
10 μA
μA
BAT Short-Circuit Duration ............................ Continuous
BAT Pin Current ...................................................800mA
PROG Pin Current ....................................................2mA
Junction Temperature .......................................... .125°C
Operating Temperature Range (Note 2) .. – 40°C to 85°C
Storage Temperature Range .................. – 65°C to 125°C
TOP VIEW
DD PACKAGE
10-LEAD (3mm × 3mm) PLASTIC DFN
10
9
6
7
8
4
5
3
2
1
BAT
V
CC
EN_CHRG
PROG
NTC
SW
EN_BUCK
MODE
FB
CHRG
11
T
JMAX
= 110°C, θ
JA
= 43°C/W (NOTE 3)
EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB