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LTC4098(RevB) Ver la hoja de datos (PDF) - Linear Technology

Número de pieza
componentes Descripción
Fabricante
LTC4098
(Rev.:RevB)
USB Compatible Switching Power Managers/Li-Ion Chargers with Overvoltage Protection
Linear
Linear Technology 
LTC4098 Datasheet PDF : 32 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
LTC4098/LTC4098-1
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted.
Ideal Diode V-I Characteristics
1.0
INTERNAL IDEAL DIODE
WITH SUPPLEMENTAL
0.8
EXTERNAL VISHAY
Si2333 PMOS
0.6
INTERNAL IDEAL
DIODE ONLY
0.4
0.2
0
0
0.04 0.08 0.12 0.16 0.20
FORWARD VOLTAGE (V)
40981 G01
VOUT Voltage vs VOUT Current
(Battery Charger Disabled)
4.50
BAT = 4V
4.25
4.00
BAT = 3.4V
3.75
3.50
VBUS = 5V
5x MODE
3.25
0
200
400
600
OUTPUT CURRENT (mA)
800
40981 G04
USB Compliant Load Current
Available Before Discharging Battery
160
150
140
130
120
110 VBUS = 5V
RCLPROG = 3.01k
1x USB SETTING
100
2.7 3.0 3.3 3.6 3.9 4.2
BATTERY VOLTAGE (V)
40981 G07
Ideal Diode Resistance
vs Battery Voltage
0.25
0.20
INTERNAL IDEAL
DIODE
0.15
0.10
INTERNAL IDEAL DIODE
WITH SUPPLEMENTAL
0.05
EXTERNAL VISHAY
Si2333 PMOS
0
2.7 3.0 3.3 3.6 3.9 4.2
BATTERY VOLTAGE (V)
40981 G02
VOUT Voltage vs VOUT Current
(Battery Charger Enabled)
3.75
3.50
3.25
3.00
VBUS = 5V
BAT = 3V
RCLPROG = 3.01k
RPROG = 2k
5x USB SETTING
2.75
0
200
400
600
OUTPUT CURRENT (mA)
800
40981 G05
USB Limited Battery Charge
Current vs Battery Voltage
700
600
500
VBUS = 5V
RPROG = 1k
RCLPROG = 3.01k
400
300
LTC4098
200
LTC4098-1
100
5x USB SETTING,
0 BATTERY CHARGER SET FOR 1A
2.7 3.0 3.3 3.6 3.9 4.2
BATTERY VOLTAGE (V)
40981 G08
USB Compliant Load Current
Available Before Discharging Battery
800
750
700
650
600
550 VBUS = 5V
RCLPROG = 3.01k
5x USB SETTING
500
2.7 3.0 3.3 3.6 3.9 4.2
BATTERY VOLTAGE (V)
40981 G03
Battery Charge Current vs VOUT
Current (Battery Charger Enabled)
700
450
200
–50
VBUS = 5V
BAT = 3V
RCLPROG = 3.01k
RPROG = 2k
5x USB SETTING
–300
0
200
400
600
OUTPUT CURRENT (mA)
800
40981 G06
USB Limited Battery Charge
Current vs Battery Voltage
150
125
100
VBUS = 5V
RPROG = 1k
RCLPROG = 3.01k
75
LTC4098
50
LTC4098-1
25
1x USB SETTING,
BATTERY CHARGER SET FOR 1A
0
2.7 3.0
3.3
3.6
3.9
4.2
BATTERY VOLTAGE (V)
40981 G09
40981fb
5

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