LTC4100EGPBF LINER [Linear Technology], LTC4100EGPBF Datasheet - Page 6

• Manufacturer Part Number: LTC4100EGPBF
• Description: Smart Battery Charger Controller
• Manufacturer: LINER [Linear Technology]

LTC4100
TYPICAL PERFORMANCE CHARACTERISTICS
6
1V/(DIV)
V
V
I
V
s
d
STATE
gs
LOAD
FLOAT
= 0V
= 0A
100
= 0
95
90
85
80
75
INFET Response Time to
Reverse Current
TEST PERFORMED ON DEMOBOARD
V
CHARGER = ON
I
Disconnect/Reconnect Battery
(Load Dump)
LOAD CURRENT = 1A, 2A, 3A
DCIN = 20V
V
Effi ciency at 12.6V with 15V V
CHARGE
IN
FLOAT
0.50
= 15VDC
DISCONNECT
I
PFET (5A/DIV)
d
= 12.6V
= <10mA
(REVERSE) OF
1.00
3A STEP
1A STEP
CHARGING CURRENT (A)
1.25μs/DIV
1.50
V
INFET = 1/2 Si4925DY
3A STEP
CHARGE
V
V
gs
RECONNECT
s
1A STEP
2.00
OF PFET (5V/DIV)
OF PFET (2V/DIV)
= 12.6V
2.50
4100 G01
DCIN
4100 G04
4100 G07
3.00
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
–3.5
–4.0
–4.5
–5.0
5V
0V
40
35
30
25
20
15
10
0
5
0
0
0
Battery Leakage Current
vs Battery Voltage
V
SMBus Accelerator Operation
DCIN = 20V
V
V
C
T
VDCIN = 0V
OUT
BAT
A
DD
BUS
LTC4100
0.5 1.0
= 25°C
= 5V
= 12.6V
= 200pF
5
vs I
OUTPUT CURRENT (A)
BATTERY VOLTAGE (V)
OUT
1.5
10
R
PULLUP
2.0
1μs/DIV
15
2.5
= 15k
3.0
20
3.5
25
4.0
4100 G08
4100 G02
4100 G05
4.5
30
–0.1
100
350
300
250
200
150
100
0.5
0.4
0.3
0.2
0.1
95
90
85
80
75
50
0
0
0
0 0.1 0.2
PWM Frequency vs Duty Cycle
Effi ciency at 19V V
Low Current Operation
V
TEMP = 27°C
DCIN = 15V
0.50
DD
= 5V
NO LOW
CURRENT
MODE
PROGRAMMED CURRENT = 10%
PROGRAMMED CURRENT (A)
0.1
1.00
CHARGING CURRENT (A)
DUTY CYCLE (V
0.3
DCIN = 15V
DCIN = 20V
DCIN = 24V
LOW
CURRENT
MODE
0.4
1.50
0.2
0.5
16.8V
12.6V
DCIN
0.6
OUT
2.00
/V
PROGRAMMED
CURRENT
0.7
IN
0.3
)
0.8
2.50
0.9
4100 G03
4100 G06
4100 G09
4100fb
3.00
0.4
1.0