ltc4007eufd-1-trpbf Linear Technology Corporation, ltc4007eufd-1-trpbf Datasheet - Page 5

• Manufacturer Part Number: ltc4007eufd-1-trpbf
• Description: 4a, High Efficiency, Standalone Li-ion Battery Charger
• Manufacturer: Linear Technology Corporation

TYPICAL PERFOR A CE CHARACTERISTICS
V
V
I
s
d
gs
= 0V
= 0A
= 0
350
300
250
200
150
100
50
0
TEST PERFORMED ON DEMOBOARD
V
CHARGER = ON
I
CHARGE
0 0.1 0.2
INFET Response Time to
Reverse Current
PWM Frequency vs Duty Cycle
IN
= 15VDC
I
PFET (5A/DIV)
d
PROGRAMMED CURRENT = 10%
= <10mA
(REVERSE) OF
DUTY CYCLE (V
0.3
DCIN = 15V
DCIN = 20V
DCIN = 24V
1.25µs/DIV
0.4
V
PFET = 1/2 Si4925DY
0.5
DCIN = 20V
V
CHARGE
1A Load Step
(Battery Not Present)
V
V
FLOAT
gs
s
0.6
OF PFET (5V/DIV)
OUT
OF PFET (2V/DIV)
/V
= 12.6V
= 12.6V
0.7
CHARGER CURRENT (500mA/DIV)
OUTPUT VOLTAGE (5V/DIV)
IN
W
)
0.8
4007 G01
0.9
4007 G04
U
1.0
V
1V/DIV
STATE
FLOAT
LOAD
–0.05
–0.10
–0.15
–0.20
–0.25
–0.30
–0.35
–0.40
–0.45
0.10
0.05
0
13
LOAD CURRENT = 1A, 2A, 3A
DCIN = 20V
V
Line Regulation
Disconnect/Reconnect Battery
(Load Dump)
FLOAT
4007 G07
15
DISCONNECT
= 12.6V (3C4C = GND, CHEM = OPEN)
17
3A STEP
1A STEP
19
VDCIN (V)
21
C3C4 = GND
3A STEP
23
1A STEP
RECONNECT
40
35
30
25
20
15
10
25
5
0
C3C4 = OPEN
0
Battery Leakage Current vs
Battery Voltage
VDCIN = 0V
27
29
5
4007 G05
4007 G02
BATTERY VOLTAGE (V)
31
10
15
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
–3.5
–4.0
–4.5
–5.0
0
DCIN = 20V
V
0
V
1A Load Step (Battery Present)
20
FLOAT
OUT
CHARGER CURRENT (1A/DIV)
OUTPUT VOLTAGE (500mV/DIV)
0.5 1.0
= 12.6V
vs I
25
3C4C = GND
3C4C = OPEN
4007 G08
OUT
OUTPUT CURRENT (A)
1.5
30
2.0
LTC4007
2.5
3.0
3.5
4.0
4007 G06
4007 G03
4007fa
5
4.5