LTC4008 Datasheet, PDF (2/24 Pages) Linear Technology – 4A, High Efficiency, Multi-Chemistry Battery Charger

LTC4008
ABSOLUTE MAXIMUM RATINGS ^{(Note 1)}
Voltage from DCIN, CLP, CLN to GND ....... +32V/–0.3 V
PGND with Respect to GND .................................. ±0.3V
CSP, BAT to GND ........................................ +28V/–0.3V
V_FB, R_T to GND ............................................. +7V/–0.3V
NTC ............................................................. +10V/–0.3V
ACP/SHDN, FLAG, FAULT, I_CL .................... +32V/–0.3V
CLP to CLN ........................................................... +0.5V
Operating Ambient Temperature Range
(Note 4) ...............................................–40°C to 85°C
Operating Junction Temperature ...........–40°C to 125°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
PACKAGE/ORDER INFORMATION
DCIN 1
I_CL 2
ACP/SHDN 3
R_T 4
FAULT 5
GND 6
V_FB 7
NTC 8
I_TH 9
PROG 10
TOP VIEW
20 INFET
19 BGATE
18 PGND
17 TGATE
16 CLP
15 CLN
14 FLAG
13 BATMON
12 BAT
11 CSP
ORDER PART
NUMBER
LTC4008EGN
DCIN 1
I_CL 2
SHDN 3
R_T 4
FAULT 5
GND 6
V_FB 7
NTC 8
I_TH 9
PROG 10
TOP VIEW
20 NC
19 BGATE
18 PGND
17 TGATE
16 CLP
15 CLN
14 FLAG
13 BATMON
12 BAT
11 CSP
GN PACKAGE
20-LEAD NARROW PLASTIC SSOP
T_JMAX = 125°C, θ_JA = 90°C/W
GN PACKAGE
20-LEAD NARROW PLASTIC SSOP
T_JMAX = 125°C, θ_JA = 90°C/W
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Free Part Marking: http://www.linear.com/leadfree/
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ORDER PART
NUMBER
LTC4008EGN-1
THE LTC4008EGN-1
Does Not Have the
Input FET Function
ELECTRICAL CHARACTERISTICS The ● denotes specifications which apply over the full operating
temperature range (Note 4), otherwise specifications are at T_A = 25°C. V_DCIN = 20V, V_BAT = 12V unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX
DCIN Operating Range
6
28
I_Q
Operating Current
V_TOL
Voltage Accuracy
Charging Sum of Current from CLP, CLN, DCIN
3
5
(Notes 2, 5)
–0.8
0.8
● –1.0
1.0
BATMON Error (Note 5)
I_TOL
Charge Current Accuracy (Note 3)
Measured from BAT to BATMON,
R_LOAD = 100k
V_CSP – V_BAT Target = 100mV
0
35
80
–4
4
● –5
5
Shutdown
Battery Leakage Current
DCIN = 0V (LTC4008 Only)
ACP/SHDN = 0V
●
20
35
● –10
10
UVLO
Undervoltage Lockout Threshold
Shutdown Threshold at ACP/SHDN
DCIN Rising, V_BAT = 0V
● 4.2
4.7
5.5
●1
1.6
2.5
Operating Current in Shutdown
V_SHDN = 0V, Sum of Current from CLP,
CLN, DCIN
2
3
2
UNITS
V
mA
%
%
mV
%
%
µA
µA
V
V
mA
4008fa