LTC4101 Просмотр технического описания (PDF) - Linear Technology
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LTC4101 Datasheet PDF : 30 Pages
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LTC4101
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted.
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 = 4.2V
INFET = 1/2 Si4925DY
ICHARGE = <10mA
4101 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 = 12V
VFLOAT = 4.2V
4101 G04
Output Voltage vs Output Current
0
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
–3.5
–4.0 VDCIN = 20V
–4.5
VPROG = 4.176V
IPROG = 4V
–5.0
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
OUTPUT CURRENT (A)
4101 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)
4101 G05
PWM Frequency vs Duty Cycle
350
300
250
200
150
PROGRAMMED CURRENT = 10%
100
50
DCIN = 9V
DCIN = 12V
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)
4101 G03
Efficiency at VPROG = 4.208V
100
96
VIN = 8V
92
88
VIN = 20V
84
80
76
72
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
IOUT (A)
4101 G06
SMBus Accelerator Operation
VDD = 5V
5V CBUS = 200pF
LTC4101
RPULLUP = 15k
0V
1μs/DIV
4101 G07
Low Current Operation
0.6
VDD = 5V
VBAT = 4V
0.5 VDCIN = 20V
VPROG = 4.208V
0.4
NO LOW
0.3
CURRENT
MODE
0.2
PROGRAMMED
CURRENT
LOW
0.1
CURRENT
MODE
0
0 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40
IPROG (A)
4101 G08
4101fa
6
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