LTC4110EUHF LINER [Linear Technology], LTC4110EUHF Datasheet - Page 49

• Manufacturer Part Number: LTC4110EUHF
• Description: Battery Backup System Manager
• Manufacturer: LINER [Linear Technology]

TYPICAL APPLICATIONS
SUPPLY
INPUT
(12V)
8.66k
1.21k
NO TIMER
HIGH CURRENT BACKUP LOAD DESIGN
0.5A BACKDRIVE CURRENT CUTOFF (CALIBRATION)
1A CHARGE AND CALIBRATION CURRENT
0.2A WAKE-UP/PRECONDITIONING CURRENT
HOST PROVIDES SMBus PULL-UP RESISTORS
ALL RESISTORS ARE 1% UNLESS NOTED OTHERWISE
Q1: Si7216DN
Q2: Si7445DN
Q3: Si7983DP
T1: BH510-1019
49.9k
0.02Ω
R
1W
CL
36.5k
37.4k
187k
0.1μF
R
R
LOW
Battery Backup System Manager Controlling a Nine-Series Cell NiMH Battery with
ESR
THA
THB
HOST
0.1μF
1.13k
54.9k
I
TO
2
C
DCIN
CLN
CLP
DCDIV
THA
V
V
V
V
I
I
I
SELA
SELC
SDA
SCL
TYPE
THB
CHG
CAL
PCC
REF
CHG
CAL
DIS
GND
IDEAL DIODE
LTC4110
INPUT
Calibration Managed by Host Processor
INID
SGND
Q2
CHGFET
DCHFET
ACPDLY
DCOUT
TIMER
GP101
GP102
GP103
I
BATID
SHDN
SENSE
ACPb
CSN
CSP
V
BAT
NC
I
DD
TH
3.32k
R
2k
2k
LOW ESR
SL
0.1μF
LOW
ESR
3.01k
VERY
20μF
0.1μF
LOW
ESR
1k
1k
Q1A
330nF
330nF
0.1μF
0.5W
1nF
33Ω
5%
4110 TA05
T1
Q1B
33Ω
0.5W
5%
R
0.05Ω
0.5W
SNS(FET)
1nF
HOST
R
0.1Ω
0.25W
I
TO
2
SNS(BAT)
C
20μF
VERY
LOW ESR
LTC4110
+
+
+
+
+
+
+
+
+
10.8V (9 CELL)
Q3
BATTERY
IDEAL
DIODE
10k
NTC
TO SYSTEM
LOAD
TO BACKUP
LOAD
49
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