LTC4099 Linear Technology Corporation, LTC4099 Datasheet - Page 7

• Manufacturer Part Number: LTC4099
• Description: I2C Controlled USB Power Manager/Charger
• Manufacturer: Linear Technology Corporation

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TYPICAL PERFORMANCE CHARACTERISTICS
R
CLPROG
3.62
3.60
3.68
3.66
3.64
140
120
100
600
500
400
300
200
100
80
60
40
20
0
0
–40
–40
2.7
USB Limited Battery Charge
Current vs Battery Voltage
Low Battery (Instant-On) Output
Voltage vs Temperature
Battery Charge Current
vs Temperature
V
V
BAT = 2.7V
I
V
= 3.01k, unless otherwise noted.
VOUT
FLOAT
BUS
BUS
–20
INPUT LIMIT SET FOR USB 100mA
INPUT LIMIT SET FOR USB 500mA
3.0
= 100mA
–15
VOLTAGE SET FOR 4.2V
0
BATTERY VOLTAGE (V)
TEMPERATURE (°C)
TEMPERATURE (˚C)
THERMAL
REGULATION
20
3.3
10
40
3.6
35
SETTING
60
85°C
80
3.9
60
SETTING
105°C
100
4099 G16
4099 G10
4099 G13
120
4.2
85
1.001
0.999
0.998
0.997
0.996
1.000
2.35
2.30
2.20
2.15
2.10
2.25
1.0
0.8
0.4
0.2
0.6
0
–40
–40
0
Ideal Diode V-I Characteristics
Normalized Battery Charger Float
Voltage vs Temperature
Oscillator Frequency
vs Temperature
INTERNAL IDEAL DIODE
WITH SUPPLEMENTAL
EXTERNAL VISHAY
Si2333 PMOS
0.04
–15
–15
FORWARD VOLTAGE (V)
TEMPERATURE (°C)
TEMPERATURE (°C)
0.08
10
10
0.12
INTERNAL IDEAL
DIODE ONLY
35
35
0.16
60
60
T
4099 G11
4099 G14
4099 G17
A
= 25°C, V
0.20
85
85
BUS
0.25
0.20
0.15
0.10
0.05
500
100
400
300
200
50
40
20
10
30
0
0
0
3.50
2.7
= 5V, BAT = 3.8V, R
1
Automatic Low Battery Charge
Current Reduction
Ideal Diode Resistance
vs Battery Voltage
V
(Suspend)
I
VOUT
BUS
INTERNAL IDEAL
= 0mA
Current vs V
3.0
2
3.55
DIODE
INTERNAL IDEAL DIODE
WITH SUPPLEMENTAL
BATTERY VOLTAGE (V)
EXTERNAL VISHAY
V
BUS
Si2333 PMOS
3.3
3
V
VOLTAGE (V)
OUT
3.60
LTC4099
BUS
PROG
(V)
3.6
4
Voltage
= 1.02k,
3.65
3.9
5
4099 G12
4099 G15
4099 G18
7
4099f
3.70
4.2
6