LTC4099EPDC 查看數據表（PDF） - Linear Technology
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LTC4099EPDC Datasheet PDF : 36 Pages
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LTC4099
Typical Performance Characteristics TA = 25°C, VBUS = 5V, BAT = 3.8V, RPROG = 1.02k,
RCLPROG = 3.01k, unless otherwise noted.
USB Compliant Output Current Available
Before Discharging Battery
800
700
600
500
400
300
200
100
0 VBUS INPUT LIMIT SET FOR USB 500mA
2.7
3.0
3.3
3.6
3.9
4.2
BATTERY VOLTAGE (V)
4099 G07
USB Compliant Output Current Available
Before Discharging Battery
175
VBUS INPUT LIMIT SET FOR USB 100mA
150
125
100
75
50
25
0
2.7
3.0
3.3
3.6
3.9
4.2
BATTERY VOLTAGE (V)
4099 G08
USB Limited Battery Charge
Current vs Battery Voltage
700
600
500
400
300
VFLOAT VOLTAGE SET FOR 4.2V
VBUS INPUT LIMIT SET FOR USB 500mA
BATTERY CHARGER SET FOR 1200mA
200
100
0
2.7
3.0
3.3
3.6
3.9
4.2
BATTERY VOLTAGE (V)
4099 G09
USB Limited Battery Charge
Current vs Battery Voltage
140
120
100
80
60
40
20 VFLOAT VOLTAGE SET FOR 4.2V
VBUS INPUT LIMIT SET FOR USB 100mA
0
2.7 3.0
3.3
3.6
3.9
4.2
BATTERY VOLTAGE (V)
4099 G10
Low Battery (Instant-On) Output
Voltage vs Temperature
3.68
BAT = 2.7V
IVOUT = 100mA
VBUS INPUT LIMIT SET FOR USB 500mA
3.66
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)
4099 G11
Normalized Battery Charger Float
Voltage vs Temperature
1.001
1.000
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)
4099 G12
Automatic Low Battery Charge
Current Reduction
500
400
0.999
300
3.64
0.998
200
3.62
0.997
100
3.60
–40
–15
10
35
60
85
TEMPERATURE (°C)
4099 G13
0.996
–40
–15
10
35
60
85
TEMPERATURE (°C)
4099 G14
0
3.50
3.55
3.60
3.65
3.70
VOUT (V)
4099 G15
4099fd
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