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LTC4058XEDD-4.2#TRPBF

P1-P3P4-P6P7-P9P10-P12
4
LTC4058-4.2/LTC4058X-4.2
sn405842 405842fs
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Regulated Output (Float) Voltage
vs Charge Current
I
BAT
(mA)
0
V
FLOAT
(V)
4.24
300
405842 G04
4.18
4.14
100 200 400
4.12
4.10
4.26
4.22
4.20
4.16
500 600 700
V
CC
= 5V
T
A
= 25°C
R
PROG
= 1.25k
Regulated Output (Float) Voltage
vs Temperature
TEMPERATURE (°C)
–50
4.185
V
FLOAT
(V)
4.190
4.195
4.200
4.205
4.215
–25
02550
405842 G05
75 100
4.210
V
CC
= 5V
R
PROG
= 10k
Regulated Output (Float) Voltage
vs Supply Voltage
V
CC
(V)
4
4.185
V
FLOAT
(V)
4.190
4.195
4.200
4.205
4.215
4.5
5 5.5 6
405842 G06
6.5 7
4.210
T
A
= 25°C
R
PROG
= 10k
CHRG Pin I-V Curve
(Pull-Down State)
Trickle Charge Current
vs Temperature
ACPR Pin I-V Curve
(Pull-Down State)
V
CHRG
(V)
0
I
CHRG
(mA)
20
25
30
35
405842 G07
15
10
12
467
5
0
T
A
= –40°C
T
A
= 25°C
T
A
= 90°C
V
CC
= 5V
V
BAT
= V
BSENSE
= 4V
V
ACPR
(V)
0
I
ACPR
(mA)
20
25
30
35
405842 G08
15
10
12
467
5
0
T
A
= –40°C
T
A
= 25°C
T
A
= 90°C
V
CC
= 5V
V
BAT
= V
BSENSE
= 4V
TEMPERATURE (°C)
–50
0
I
TRKL
(mA)
10
20
30
40
60
–25
02550
405842 G09
75 100
50
V
CC
= 5V
V
BAT
= V
BSENSE
= 2.5V
R
PROG
= 2k
R
PROG
= 10k
Trickle Charge Current
vs Supply Voltage Charge Current vs Battery Voltage
V
CC
(V)
4
0
I
TRKL
(mA)
10
20
30
40
60
4.5
5 5.5 6
405842 G10
6.5 7
50
V
BAT
= V
BSENSE
= 2.5V
T
A
= 25°C
R
PROG
= 2k
R
PROG
= 10k
Trickle Charge Threshold Voltage
vs Temperature
TEMPERATURE (°C)
–50
V
TRKL
(V)
2.875
2.900
2.925
25
75
405842 G11
2.850
2.825
2.800
–25 0 50
2.950
2.975
3.000
100
V
CC
= 5V
R
PROG
= 10k
V
BAT
(V)
2.4
I
BAT
(mA)
400
500
600
3.3 3.9
405842 G08
300
200
2.7 3
3.6 4.2 4.5
100
0
V
CC
= 5V
θ
JA
= 40°C/W
R
PROG
= 2k
5
LTC4058-4.2/LTC4058X-4.2
sn405842 405842fs
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Charge Current vs Supply Voltage
Charge Current
vs Ambient Temperature
Recharge Threshold Voltage
vs Temperature
Power FET Transistor Curve
Power FET “ON” Resistance
vs Temperature
V
CC
(V)
4
0
I
BAT
(mA)
100
200
300
400
600
4.5
5 5.5 6
405842 G13
6.5 7
500
V
BAT
= V
BSENSE
= 4V
T
A
= 25°C
θ
JA
= 40°C/W
R
PROG
= 2k
R
PROG
= 10k
TEMPERATURE (°C)
–50
I
BAT
(mA)
400
500
600
25 75
405842 G14
300
200
–25 0
50 100 125
100
0
V
CC
= 5V
V
BAT
= V
BSENSE
= 4V
θ
JA
= 40°C/W
R
PROG
= 2k
ONSET OF THERMAL REGULATION
R
PROG
= 10k
TEMPERATURE (°C)
–50
4.04
V
RECHRG
(V)
4.06
4.08
4.10
4.12
4.16
–25
02550
405842 G15
75 100
4.14
V
CC
= 5V
R
PROG
= 10k
V
BAT
(V)
3.8
I
BAT
(mA)
300
400
500
4.7
5.3
405842 G16
200
100
0
4.1 4.4 5
600
700
800
V
CC
= 5V
V
BSENSE
= 3.5V
T
A
= 25°C
R
PROG
= 2k
TEMPERATURE (°C)
–50
300
R
DS(ON)
(mΩ)
400
500
600
700
800
–25
02550
405842 G17
75 100
V
CC
= 5V
V
BAT
= 4.8V
V
BSENSE
= 4V
R
PROG
= 2k
UU
U
PI FU CTIO S
BSENSE (Pin 1): Battery Sense. This pin is used to Kelvin
sense the positive battery terminal and regulate the final
float voltage to 4.2V. An internal precision resistor divider
sets this float voltage and is disconnected in shutdown
mode. For Li-Ion applications, this pin must be electri-
cally connected to BAT.
BAT (Pin 2): Charge Current Output. Provides charge
current to the battery from the internal P-channel MOSFET.
CHRG (Pin 3): Charge Status Open-Drain Output. When
the battery is charging, the CHRG pin is pulled low by an
internal N-channel MOSFET. When the charge cycle is
completed, CHRG becomes high impedance.
GND (Pins 4, 9): Ground/Exposed Pad. The exposed
backside of the package (Pin 9) is also ground and must
be soldered to the PC board for maximum heat transfer.
PROG (Pin 5): Charge Current Program and Charge Cur-
rent Monitor. Charge current is programmed by connect-
ing a 1% resistor, R
PROG
, to ground. When charging in
constant-current mode, this pin servos to 1V. In all modes,
6
LTC4058-4.2/LTC4058X-4.2
sn405842 405842fs
UU
U
PI FU CTIO S
the voltage on this pin can be used to measure the charge
current using the following formula:
I
BAT
= (V
PROG
/R
PROG
) • 1000
This pin is clamped to approximately 2.4V. Driving this pin
to voltages beyond the clamp voltage can draw currents as
high as 1.5mA.
V
CC
(Pin 6): Positive Input Supply Voltage. Provides
power to the charger. V
CC
can range from 4.25V to 6.5V.
This pin should be bypassed with at least a 1µF capacitor.
When V
CC
is within 100mV of the BSENSE pin voltage, the
LTC4058 enters shutdown mode dropping the battery
drain current to less than 2µA.
ACPR (Pin 7): Power Supply Status Open-Drain Output.
When V
CC
is greater than the undervoltage lockout thresh-
old and at least 100mV above V
BSENSE
, the ACPR pin is
pulled to ground; otherwise, the pin is high impedance.
EN (Pin 8): Enable Input . A logic high on the EN pin will put
the LTC4058 into shutdown mode where the battery drain
current is reduced to less than 2µA and the supply current
is reduced to less than 50µA. A logic low or floating the EN
pin (allowing an internal 2MΩ pull-down resistor to pull
this pin low) enables charging.
BLOCK DIAGRA
W
–
+
–
+
–
+
2
6
–
+
120°C
T
DIE
T
A
MA
CA
C1
1× 1000×
VA
R1
BAT
1
BSENSE
R2
R3
1V
0.1V
R4
R5
PROG
TRICKLE CHARGE
DISABLED ON THE
LTC4058X
5µA
R
PROG
R
EN
REF
1.21V
V
CC
CHRG
3
EN
8
GND
4, 9
405842 BD
–
+
C2
2.9V TO BAT
TERM
ACPRCHARGE
SHDNEN
LOGIC
ACPR
7
5
P1-P3P4-P6P7-P9P10-P12

LTC4058XEDD-4.2#TRPBF

Mfr. #:
Buy LTC4058XEDD-4.2#TRPBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Battery Management tandalone Li-Ion Battery Charger in DFN
Lifecycle:
New from this manufacturer.
Delivery:
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