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LTC4007 Datasheet(PDF) 5 Page - Linear Technology

Part # LTC4007
Description  4A, High Effi ciency, Standalone Li-Ion Battery Charger
Download  24 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4007 Datasheet(HTML) 5 Page - Linear Technology

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


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