LLTC4100EG Просмотр технического описания (PDF) - Linear Technology
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LLTC4100EG Datasheet PDF : 30 Pages
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LTC4100
Typical Performance Characteristics
INFET Response Time to
Reverse Current
Vgs = 0
Vgs OF PFET (2V/DIV)
Vs OF PFET (5V/DIV)
Vs = 0V
Id (REVERSE) OF
PFET (5A/DIV)
Id = 0A
1.25µs/DIV
TEST PERFORMED ON DEMOBOARD
VIN = 15VDC
CHARGER = ON
VCHARGE = 12.6V
INFET = 1/2 Si4925DY
ICHARGE = <10mA
4100 G01
Disconnect/Reconnect Battery
(Load Dump)
VFLOAT
1V/(DIV)
3A STEP
1A STEP
1A STEP
LOAD
STATE
DISCONNECT
3A STEP
RECONNECT
LOAD CURRENT = 1A, 2A, 3A
DCIN = 20V
VFLOAT = 12.6V
4100 G04
Efficiency at 12.6V with 15V VDCIN
100
95
VOUT vs IOUT
0
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
–3.5
–4.0
–4.5 DCIN = 20V
–5.0 VBAT = 12.6V
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
OUTPUT CURRENT (A)
4100 G02
Battery Leakage Current
vs Battery Voltage
40 VDCIN = 0V
35
30
25
20
15
10
5
0
0
5 10 15 20 25 30
BATTERY VOLTAGE (V)
4100 G05
SMBus Accelerator Operation
VDD = 5V
5V CBUS = 200pF
TA = 25°C
90
LTC4100
85
RPULLUP = 15k
80
0V
75
0.50
1.00 1.50 2.00 2.50 3.00
CHARGING CURRENT (A)
4100 G07
1µs/DIV
4100 G08
6
For more information www.linear.com/LTC4100
PWM Frequency vs Duty Cycle
350
300
250
200
150
PROGRAMMED CURRENT = 10%
100
50
DCIN = 15V
DCIN = 20V
0
DCIN = 24V
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
DUTY CYCLE (VOUT/VIN)
4100 G03
Efficiency at 19V VDCIN
100
16.8V
95
12.6V
90
85
80
75
0.50
1.00 1.50 2.00 2.50 3.00
CHARGING CURRENT (A)
4100 G06
Low Current Operation
0.5 VDD = 5V
TEMP = 27°C
0.4 DCIN = 15V
0.3
NO LOW
0.2
CURRENT
MODE
PROGRAMMED
CURRENT
0.1
LOW
CURRENT
MODE
0
–0.1
0
0.1
0.2
0.3
PROGRAMMED CURRENT (A)
0.4
4100 G09
4100fc
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