LTC4055 Linear Technology, LTC4055 Datasheet - Page 2

• Manufacturer Part Number: LTC4055
• Description: USB Power Controller and Li-Ion Linear Charger
• Manufacturer: Linear Technology

ABSOLUTE
ELECTRICAL CHARACTERISTICS
LTC4055
(Notes 1, 2, 3, 4, 5)
Terminal Voltage
Pin Current (DC)
Operating Temperature Range ............... – 40 C to 85 C
Maximum Operating Junction Temperature......... 125 C
Reflow Peak Body Temperature ........................... 260 C
Storage Temperature Range ................ – 65 C to 125 C
temperature range, otherwise specifications are at T
R
SYMBOL
V
V
I
I
I
I
V
Current Limit
I
R
V
I
V
V
2
IN
OUT
BAT
LIM(MAX)
LIM
SS
IN
BAT
UVLO
PROG
CLEN
ALEN
V
ON
V
PROG
UVLO
CLEN
IN1, IN2, OUT, BAT ................................ –0.3V to 6V
NTC, V
PROG, CLPROG ..................... –0.3V to (V
CHRG, HPWR, SUSP, SHDN,
WALL, ACPR .......................................... –0.3V to 6V
IN2 .......................................................... V
IN1, IN2, OUT, BAT (Note 7) ............................. 1.6A
= R
CLPROG
NTC
, TIMER,
= 100k, unless otherwise noted.
PARAMETER
Input Supply Voltage
Input Voltage
Input Supply Current
Output Supply Current
Battery Drain Current
Maximum Current Limit
Input or Output Undervoltage Lockout V
Input or Output Undervoltage Lockout V
Hysteresis
Current Limit
ON Resistance V
Programming Pin Voltage
(PROG, CLPROG)
Soft-Start Inrush Current
Input Current Limit Enable Threshold
Input Current Limit Enable Threshold
Automatic Limit Enable Threshold
Voltage
W
MAXIMUM
W W
IN
to V
OUT
RATINGS
U
A
CC
CONDITIONS
IN1, IN2 and OUT
BAT
V
Suspend Mode
Suspend Mode, Wall = 2V, V
Shutdown
V
V
Suspend Mode
Shutdown
V
(Note 8)
V
V
R
R
HPWR = 5V, 400mA Load
HPWR = 0V, 80mA Load
R
R
IN or OUT
V
V
(V
(V
IN1
= 25 C. V
BAT
OUT
BAT
IN1
IN
OUT
IN
OUT
IN
IN
CLPROG
CLPROG
CLPROG
CLPROG
IN
IN
Powers Part, Rising Threshold
Rising – V
Rising
Rising – V
+ 0.3V)
– V
– V
= V
+ 0.1V
= 4.2V
= 4.2V, Charging Stopped
= 5V, V
Powers Part, Rising Threshold
Rising – V
The
OUT
IN2
OUT
= 100k, HPWR = 5V
= 100k, HPWR = 0V
= R
= R
) V
= 0V, BAT Powers OUT, No Load
IN1
) V
PROG
PROG
IN1
indicates specifications which apply over the full operating
IN
IN
IN
IN
= V
OUT
= V
Falling or
Falling
Rising
Falling
= 100k
= 50k
PACKAGE/ORDER
Consult LTC Marketing for parts specified with wider operating temperature ranges.
IN2
IN2
Falling
= 0V, V
= 5V, V
16-LEAD (4mm 4mm) PLASTIC QFN
OUT
BAT
IN2
IN1
OUT
BAT
EXPOSED PAD IS GND (PIN 17)
T
MUST BE SOLDERED TO PCB
BAT
1
2
3
4
JMAX
= 4.8V
= 4.2V
16 15 14 13
5
= 3.5V, HPWR = 5V, WALL = 0V,
UF PACKAGE
= 125 C,
TOP VIEW
6
17
7
JA
8
= 37 C/W
12
11
10
9
4.35
0.98
0.98
MIN
465
–75
3.6
3.6
3.6
89
TIMER
PROG
GND
CLPROG
25
INFORMATION
U
1.000
1.000
TYP
450
125
490
125
–50
0.8
0.2
2.5
3.8
3.8
0.2
0.2
3.8
50
10
15
15
50
97
1
5
50
ORDER PART
LTC4055EUF
W
MARKING
NUMBER
UF PART
4055
MAX
1.02
1.02
100
900
100
515
105
–25
5.5
4.3
1.6
20
30
30
5
4
4
4
75
UNITS
mA/ s
U
4055p
mA
mA
mV
mA
mA
mV
mV
mV
V
V
A
A
A
A
A
A
A
A
V
V
V
V
V