Datasheet

LTC4085-3/LTC4085-4
2
408534fb
(Notes 1, 2, 3, 4, 5)
Terminal Voltage
IN, OUT
t < 1ms and Duty Cycle < 1% ................... –0.3V to 7V
Steady State ............................................. –0.3V to 6V
BAT, CHRG, HPWR, SUSP, WALL, ACPR....... –0.3V to 6V
NTC, TIMER, PROG, CLPROG .......–0.3V to (V
CC
+ 0.3V)
Pin Current (Steady State)
IN, OUT, BAT (Note 6) ...............................................2.5A
Operating Temperature Range.................. –40°C to 85°C
Maximum Operating Junction Temperature .......... 110°C
Storage Temperature Range ................... –65°C to 125°C
The ● indicates specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C (Note 5). V
IN
= 5V, V
BAT
= 3.7V, HPWR = 5V, WALL = 0V, R
PROG
= 100k,
R
CLPROG
= 2k, unless otherwise noted.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Input Supply Voltage IN and OUT 4.35 5.5 V
V
BAT
Input Voltage BAT 4.3 V
I
IN
Input Supply Current I
BAT
= 0 (Note 7)
Suspend Mode; SUSP = 5V
Suspend Mode; SUSP = 5V, WALL = 5V,
V
OUT
= 4.8V
●
●
●
0.5
50
60
1.2
100
110
mA
µA
µA
I
OUT
Output Supply Current V
OUT
= 5V, V
IN
= 0V, NTC = V
NTC
●
0.7 1.4 mA
I
BAT
Battery Drain Current V
BAT
= 4.05V, Charging Stopped
Suspend Mode; SUSP = 5V
V
IN
= 0V, BAT Powers OUT, No Load
●
●
●
15
22
60
27
35
100
µA
µA
µA
T
JMAX
= 125°C, θ
JA
= 43°C/W
EXPOSED PAD (PIN 15) IS GND, MUST BE CONNECTED TO PCB
1
2
3
4
5
6
7
14
13
12
11
10
9
8
BAT
GATE
PROG
CHRG
ACPR
V
NTC
NTC
IN
OUT
CLPROG
HPWR
SUSP
TIMER
WALL
TOP VIEW
15
DE PACKAGE
14-LEAD (4mm × 3mm) PLASTIC DFN
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC4085EDE-3#PBF LTC4085EDE-3#TRPBF 40853
14-Lead (4mm × 3mm) Plastic DFN
–40°C to 85°C
LTC4085EDE-4#PBF LTC4085EDE-4#TRPBF 40854
14-Lead (4mm × 3mm) Plastic DFN
–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/
PIN CONFIGURATIONABSOLUTE MAXIMUM RATINGS
ORDER INFORMATION
ELECTRICAL CHARACTERISTICS
LTC4085 Options
PART NUMBER FLOAT VOLTAGE NTC HOT THRESHOLD UNDERVOLTAGE CURRENT LIMIT*
LTC4085 4.2V 29% V
VNTC
Yes
LTC4085-1 4.1V 32.6% V
VNTC
Yes
LTC4085-3 3.95V 32.6% V
VNTC
Yes
LTC4085-4 3.95V 32.6% V
VNTC
No
*Undervoltage current limit reduces charge current as V
OUT
falls below approximately 4.45V.