LTC4099 Linear Technology Corporation, LTC4099 Datasheet - Page 9

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

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TYPICAL PERFORMANCE CHARACTERISTICS
R
CLPROG
100
500
400
300
200
100
80
40
20
60
0
0
5
4
3
2
0
1
–40
0
0
IRQ Pin Current vs Voltage
(Pull-Down State)
V
BATTERY CHARGER SET FOR 500mA
FLOAT VOLTAGE SET FOR 4.2V
Battery Charge Current and
Voltage vs Time
Input Current vs Temperature
BUS
BATTERY CHARGER
SET FOR 1200mA
= 3.01k, unless otherwise noted.
1
INPUT LIMIT SET FOR 790mA
–15
1
2
CHRG PIN VOLTAGE (V)
100mA USB SETTING
500mA USB SETTING
TEMPERATURE (°C)
TIME (HOURS)
3
10
2
CHARGER TERMINATION
4-HOUR SETTING
4
500mA
35
3
5
6
60
4
7
4099 G31
4099 G28
4099 G34
85
5
8
1.0
0.8
0.6
0.4
0.2
0
2V/DIV
120
150
0V
90
60
30
4.4
4.2
4.0
3.8
3.6
3.4
3.2
3.0
0
3.6
2.4
Battery Safety Conditioner Discharge
Current vs Battery Voltage
Output Voltage vs Battery Voltage;
Battery Charger Overprogrammed
OVP Connection Waveform
BATTERY CONDITIONER ENABLED
V
V
BATTERY CHARGER SET FOR 1200mA
NTC
BUS
/ V
3.7
= 0V
2.7
100mA USB
NTCBIAS
SETTING
BATTERY VOLTAGE (V)
BATTERY VOLTAGE (V)
3.8
3.0
< 0.219
250μs/DIV
BATTERY VOLTAGE
3.9
3.3
500mA USB
OVGATE
SETTING
V
BUS
4.0
3.6
4.1
3.9
T
4099 G32
4099 G35
A
4099 G29
= 25°C, V
4.2
4.2
AC COUPLED
OVP INPUT
500μA/DIV
10V STEP
20mV/DIV
VOLTAGE
OVGATE
BUS
5V/DIV
5V/DIV
5V/DIV
5V TO
V
V
100
0mA
BUS
I
OUT
OUT
80
60
40
20
= 5V, BAT = 3.8V, R
0
3.0
High Voltage Input Charging
Effi ciency vs Battery Voltage
Suspend LDO Transient Response
(500μA to 1.5mA)
OVP Disconnect Waveform
BATTERY CHARGE SET FOR 700mA
INPUT VOLTAGE = 13.5V
3.3
BATTERY VOLTAGE (V)
USING THE LT3653
WITH Bat-Track
CONVENTIONAL 5V BUCK
WITHOUT Bat-Track
500μs/DIV
500μs/DIV
LTC4099
3.6
PROG
= 1.02k,
3.9
4099 G33
9
4099f
4099 G30
4099 G36
4.2