LTC4110EUHF LINER [Linear Technology], LTC4110EUHF Datasheet - Page 7

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

TYPICAL PERFORMANCE CHARACTERISTICS
5V/DIV
140
120
100
–20
100
0V
80
60
40
20
90
80
70
60
50
40
30
20
10
0
0
0.05
0
Typical CHGFET and DCHFET
Waveforms
V
V
Battery Leakage in Idle
Mode – IBIDL
Charging Effi ciency/Power Loss,
12V
510-1019)
IN
BAT
0.1
= 12V
IN
= 12V (NiMH)
0.2
and 12.6V
5
EFFICIENCY
0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.00
10
500ns/DIV
I
V
LOAD
BAT
OUT
POWER LOSS
(V)
(A)
15
(Xfmr = BH
20
4110 G01
4110 G04
4110 G07
25
2.5
2.0
1.5
1.0
0.5
0
1200
1000
0.2A/DIV
800
600
400
200
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0
0
0
Output Charging Characteristics
Showing Constant Current and
Constant Voltage Operation
Battery Current in Backup
Mode – IBBU
0A
PRE-CHARGE
Soft-Start Waveform
2
5
4
10
V
6
V
BAT
BAT
2ms/DIV
(V)
(V)
8
15
CC
10
20
12
CV
4110 G02
4110 G05
14
25
4110 G08
V
V
BATTERY
BACKUP
2V/DIV
3V/DIV
2.5
2.0
1.5
1.0
0.5
40
35
30
25
20
15
10
0
5
0
0V
0
0
Supply Current vs DCIN Voltage in
Idle Mode
Battery Leakage in Shutdown
Mode vs Battery Voltage
Backup Mode On and Off
Waveform
NiMH BATTERY (12V)
I
V
LOAD
IN
= 15V FALLING
= 3A
5
5
10
DCIN (V)
V
BAT
10ms/DIV
LTC4110
10
(V)
15
15
20
4110 G03
4110 G06
4110fa
7
4110 G09
20
25