LTC4011 Linear Technology, LTC4011 Datasheet - Page 5

• Manufacturer Part Number: LTC4011
• Description: High Efficiency Standalone Nickel Battery Charger
• Manufacturer: Linear Technology

www.DataSheet4U.com
DataSheet U .com
TYPICAL PERFOR A CE CHARACTERISTICS
4
12
1.60
1.55
1.50
1.45
1.40
1.45
1.30
8
4
0
10
DC674A WITH 1kΩ SYSTEM LOAD AND 20kΩ
DCIN SHUNT, CHARGER PAUSED
PowerPath Switching
5
5
0
0
Charger Soft-Start
NiMH Charge at 0.5C
4 SERIES NimH 2100mAHr
AA CELLS CHARGED AT 0.5C
20 40
CHARGE CURRENT
FAST CHARGE CURRENT
TGATE
PRECHARGE CURRENT
SINGLE CELL
60
DCIN OPEN
TIME (MINUTES)
100µs/DIV
VOLTAGE
80 100
200µs/DIV
V
INFET
DCIN
CC
BGATE
120
TEMPERATURE
BATTERY
140 160
0.5A
1A
TOP OFF
W
4011 G09
180 200
4011 G03
4011 G06
U
45
40
35
30
25
20
15
2
1
0
1.30
1.65
1.60
1.50
1.45
1.40
1.55
1.35
0
NiCd Charge at 1C
100
95
90
85
80
75
70
65
60
–1
–2
–3
3
2
1
0
Charger Efficiency at DCIN = 20V,
I
0
6
20
Fast Charge Current Line
Regulation
OUT
BAT = 4.8V
SINGLE CELL
2
TIME (MINUTES)
TEMPERATURE
= 2A
10
VOLTAGE
4
CHARGE CURRENT
BATTERY
40
BATTERY VOLTAGE (V)
6
14
8
V
50°C
25°C
CC
0°C
10
18
60
(V)
12
22
4011 G01
1A
14
80
16
26
22
36
34
30
28
26
24
32
18
4011 G07
4011 G04
20
30
1.40
1.35
1.75
1.70
1.65
1.60
1.55
1.50
1.45
0
4 Series NiCd 1300mAhr
–10
–12
4 SERIES NiCd 1300mAhr
SC CELLS CHARGED AT 2C
–2
–4
–6
–8
–1
–3
–2
0
3
1
0
2
Charge Current Accuracy
0
0
Fast Charge Current Output
Regulation
V
V
BAT = 4.8V
CC
CC
10
= 20V
= 12V
SINGLE CELL
10
TEMPERATURE
TIME (MINUTES)
4
VOLTAGE
CHARGE CURRENT
TEMPERATURE (°C)
20
BATTERY
FAST CHARGE
PRECHARGE
20
50°C
0°C
BAT (V)
8
LTC4011
30
25°C
30
12
3A
2A
1A
40
4011 G02
40
16
4011 G08
4011 G05
55
50
40
20
15
5
45
35
30
25
4011p
50