Datasheet

LTC4055/LTC4055-1
2
4055fb
PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS
Terminal Voltage
IN1, IN2, OUT, BAT .................................. –0.3V to 6V
NTC, V
NTC
, TIMER,
PROG, CLPROG ..................... –0.3V to (VCC + 0.3V)
CHRG, HPWR, SUSP, SHDN,
WALL, ACPR ........................................... –0.3V to 6V
IN2 ........................................................... V
IN1
+ 0.1V
Pin Current (DC)
IN1, IN2, OUT, BAT (Note 7) ............................... 1.6A
Operating Temperature Range................. –40°C to 85°C
Maximum Operating Junction Temperature ......... 125°C
Storage Temperature Range .................. –65°C to 125°C
(Notes 1, 2, 3, 4, 5)
16 15 14 13
5 6 7 8
TOP VIEW
17
UF PACKAGE
16-LEAD (4mm s 4mm) PLASTIC QFN
9
10
11
12
4
3
2
1IN2
BAT
OUT
IN1
TIMER
PROG
GND
CLPROG
NTC VNTC CHRG ACPR
WALL
SHDN
SUSP
HPWR
T
JMAX
= 125°C, θ
JA
= 37°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC4055EUF#PBF LTC4055EUF#TRPBF 4055
16-Lead (4mm × 4mm) Plastic QFN
–40°C to 85°C
LTC4055EUF-1#PBF LTC4055EUF-1#TRPBF 40551
16-Lead (4mm × 4mm) Plastic QFN
–40°C to 85°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/
ELECTRICAL CHARACTERISTICS
The l denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V
IN1
= V
IN2
= 5V, V
BAT
= 3.5V, HPWR = 5V, WALL = 0V,
R
PROG
= R
CLPROG
= 100k, unless otherwise noted.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Input Supply Voltage IN1, IN2 and OUT
l
4.35 5.5 V
V
BAT
Input Voltage BAT
l
4.3 V
I
IN
Input Supply Current V
BAT
= 4.2V
Suspend Mode
Suspend Mode, Wall = 2V, V
OUT
= 4.8V
Shutdown
l
l
l
l
0.8
50
0.1
10
1.6
100
0.2
20
mA
μA
mA
μA
I
OUT
Output Supply Current V
OUT
= 5V, V
IN1
= V
IN2
= 0V, V
BAT
= 4.2V
l
450 900 μA
I
BAT
Battery Drain Current V
BAT
= 4.2V, Charging Stopped
Suspend Mode
Shutdown
V
IN1
= V
IN2
= 0V, BAT Powers OUT, No Load
l
l
l
l
15
15
2.5
50
30
30
5
100
μA
μA
μA
μA
I
LIM(MAX)
Maximum Current Limit (Note 8) 1 A
V
UVLO
Input or Output Undervoltage Lockout V
IN
Powers Part, Rising Threshold
V
OUT
Powers Part, Rising Threshold
l
l
3.5
3.5
3.8
3.8
4
4
V
V
ΔV
UVLO
Input or Output Undervoltage Lockout
Hysteresis
V
IN
Rising – V
IN
Falling or
V
OUT
Rising – V
OUT
Falling
125 mV