Datasheet

2
LTC4054-4.2/LTC4054X-4.2
405442xf
(Note 1)
Input Supply Voltage (V
CC
) ....................... –0.3V to 10V
PROG............................................. –0.3V to V
CC
+ 0.3V
BAT..............................................................–0.3V to 7V
CHRG........................................................ –0.3V to 10V
BAT Short-Circuit Duration .......................... Continuous
BAT Pin Current ................................................. 800mA
PROG Pin Current................................................ 800µA
Maximum Junction Temperature .......................... 125°C
Operating Ambient Temperature Range
(Note 2) .............................................. –40°C to 85°C
Storage Temperature Range ................. –65°C to 125°C
Lead Temperature (Soldering, 10 sec).................. 300°C
T
JMAX
= 125°C, (θ
JA
= 80°C/ W TO
150°C/W DEPENDING ON PC BOARD LAYOUT)
(N0TE 3)
ORDER PART
NUMBER
S5 PART MARKING
LTH7
LTADY
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
CC
Input Supply Voltage ● 4.25 6.5 V
I
CC
Input Supply Current Charge Mode (Note 4), R
PROG
= 10k ● 300 2000 µA
Standby Mode (Charge Terminated)
● 200 500 µA
Shutdown Mode (R
PROG
Not Connected, ● 25 50 µA
V
CC
< V
BAT
, or V
CC
< V
UV
)
V
FLOAT
Regulated Output (Float) Voltage 0°C ≤ T
A
≤ 85°C, I
BAT
= 40mA 4.158 4.2 4.242 V
I
BAT
BAT Pin Current R
PROG
= 10k, Current Mode ● 93 100 107 mA
R
PROG
= 2k, Current Mode ● 465 500 535 mA
Standby Mode, V
BAT
= 4.2V ● 0 –2.5 –6 µA
Shutdown Mode (R
PROG
Not Connected) ±1 ±2 µA
Sleep Mode, V
CC
= 0V ±1 ±2 µA
I
TRIKL
Trickle Charge Current V
BAT
< V
TRIKL
, R
PROG
= 2k (Note 5) ● 20 45 70 mA
V
TRIKL
Trickle Charge Threshold Voltage R
PROG
= 10k, V
BAT
Rising (Note 5) 2.8 2.9 3.0 V
V
TRHYS
Trickle Charge Hysteresis Voltage R
PROG
= 10k (Note 5) 60 80 110 mV
V
UV
V
CC
Undervoltage Lockout Threshold From V
CC
Low to High ● 3.7 3.8 3.92 V
V
UVHYS
V
CC
Undervoltage Lockout Hysteresis ● 150 200 300 mV
V
MSD
Manual Shutdown Threshold Voltage PROG Pin Rising ● 1.15 1.21 1.30 V
PROG Pin Falling
● 0.9 1.0 1.1 V
V
ASD
V
CC
– V
BAT
Lockout Threshold Voltage V
CC
from Low to High 70 100 140 mV
V
CC
from High to Low 5 30 50 mV
I
TERM
C/10 Termination Current Threshold R
PROG
= 10k (Note 6) ● 0.085 0.10 0.115 mA/mA
R
PROG
= 2k ● 0.085 0.10 0.115 mA/mA
V
PROG
PROG Pin Voltage R
PROG
= 10k, Current Mode ● 0.93 1.0 1.07 V
I
CHRG
CHRG Pin Weak Pull-Down Current V
CHRG
= 5V 8 20 35 µA
V
CHRG
CHRG Pin Output Low Voltage I
CHRG
= 5mA 0.35 0.6 V
∆V
RECHRG
Recharge Battery Threshold Voltage V
FLOAT
- V
RECHRG
100 150 200 mV
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.
ABSOLUTE AXI U RATI GS
WWWU
PACKAGE/ORDER I FOR ATIO
UU
W
ELECTRICAL CHARACTERISTICS
Consult LTC Marketing for parts specified with wider operating temperature ranges.
CHRG 1
GND 2
TOP VIEW
S5 PACKAGE
5-LEAD PLASTIC TSOT-23
BAT 3
5 PROG
4 V
CC
LTC4054ES5-4.2
LTC4054XES5-4.2