LTC4068X-4.2_15 Datasheet, PDF (2/12 Pages) Linear Technology – Standalone Linear Li-Ion Battery Charger with Programmable Termination

LTC4068-4.2/LTC4068X-4.2
ABSOLUTE AXI U RATI GS
(Note 1)
Input Supply Voltage (V_CC) ....................... –0.3V to 10V
PROG, ITERM ................................ – 0.3V to V_CC + 0.3V
BAT ............................................................. –0.3V to 7V
CHRG, ACPR, EN ...................................... –0.3V to 10V
BAT Short-Circuit Duration .......................... Continuous
BAT Pin Current ........................................................ 1A
PROG Pin Current ................................................... 1mA
Maximum Junction Temperature .......................... 125°C
Operating Temperature Range (Note 2) .. – 40°C to 85°C
Storage Temperature Range ................. – 65°C to 125°C
UW U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
ITERM 1
8 EN
BAT 2
7 ACPR
9
CHRG 3
6 V_CC
GND 4
5 PROG
ORDER PART
NUMBER
LTC4068EDD-4.2
LTC4068XEDD-4.2
DD PACKAGE
8-LEAD (3mm × 3mm) PLASTIC DFN
T_JMAX = 125°C, θ_JA = 40°C/W (NOTE 3)
EXPOSED PAD IS GROUND (PIN 9)
MUST BE SOLDERED TO PCB
DD PART MARKING
LBHZ
LBQB
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The ● denotes specifications which apply over the full operating
temperature range, otherwise specifications are at T_A = 25°C. V_CC = 5V, unless otherwise noted.
SYMBOL
V_CC
I_CC
V_FLOAT
I_BAT
I_TRIKL
V_TRIKL
V_TRHYS
V_UV
V_UVHYS
V_EN(IL)
V_EN(IH)
R_EN
V_ASD
I_TERM
V_PROG
V_CHRG
V_ACPR
∆V_RECHRG
PARAMETER
Input Supply Voltage
Input Supply Current
Regulated Output (Float) Voltage
BAT Pin Current
Trickle Charge Current
Trickle Charge Threshold Voltage
Trickle Charge Hysteresis Voltage
V_CC Undervoltage Lockout Voltage
V_CC Undervoltage Lockout Hysteresis
EN Pin Input Low Voltage
EN Pin Input High Voltage
EN Pin Pull-Down Resistor
V_CC – V_BAT Lockout Threshold
Charge Termination Current Threshold
PROG Pin Voltage
CHRG Pin Output Low Voltage
ACPR Pin Output Low Voltage
Recharge Battery Threshold Voltage
CONDITIONS
Charge Mode (Note 4), R_PROG = 10k
Standby Mode (Charge Terminated)
Shutdown Mode (EN = 5V, V_CC < V_BAT
or V_CC < V_UV)
0°C ≤ T_A ≤ 85°C, 4.3V < V_CC < 6.5V
R_PROG = 10k, Current Mode
R_PROG = 2k, Current Mode
Standby Mode, V_BAT = 4.2V
Shutdown Mode (EN = 5V, V_CC < V_BAT or
V_CC < V_UV)
Sleep Mode, V_CC = 0V
V_BAT < V_TRIKL, R_PROG = 2k (Note 5)
R_PROG = 10k, V_BAT Rising (Note 5)
R_PROG = 10k (Note 5)
From V_CC Low to High
V_CC from Low to High
V_CC from High to Low
R_TERM = 1k
R_TERM = 5k
R_PROG = 10k, Current Mode
I_CHRG = 5mA
I_ACPR = 5mA
V_FLOAT – V_RECHRG, 0°C ≤ T_A ≤ 85°C
MIN TYP MAX
● 4.25
6.5
●
0.4
1
●
200 500
●
25
50
4.158 4.2 4.242
●
92
100 105
●
465
500
535
●
–2.5
–6
±1
±2
±1
±2
●
30
45
60
2.8
2.9
3
80
●
3.7
3.8
3.92
●
150
200
300
●
0.4
0.7
●
0.7
1
●
1.2
2
5
70
100 140
5
30
50
●
90
100 110
● 17.5
20
22.5
0.93
1
1.07
0.35
0.6
0.35
0.6
60
100 140
UNITS
V
mA
µA
µA
V
mA
mA
µA
µA
µA
mA
V
mV
V
mV
V
V
MΩ
mV
mV
mA
mA
V
V
V
mV
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