LTC4059_15 Datasheet, PDF (4/12 Pages) Linear Technology – 900mA Linear Li-Ion Battery Chargers with Thermal Regulation in 2 2 DFN

LTC4059/LTC4059A
TYPICAL PERFOR A CE CHARACTERISTICS
V_CC – V_BAT Undervoltage Lockout
Threshold vs Battery Voltage
500
T_A = 25°C
450 R_PROG = 12.1k
400
350
300
250
200
150
100
50
0
3
4
5
6
7
8
V_BAT (V)
4059 G10
UVLO Battery Drain Current
vs Temperature
2.5
V_CC = 0V
V_BAT = 4V
2.0
1.5
1.0
0.5
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
4059 G13
ACPR Pin Output Low Voltage
vs Temperature (LTC4059A Only)
0.50
V_CC = 5V
0.45 ^{VBAT = 4.2V}
I_ACPR = 300µA
0.40
0.35
0.30
0.25
0.20
0.15
0.10
– 50 – 25
0 25 50 75
TEMPERATURE (°C)
100 125
4059 G17
4
EN Pin Current
vs EN Voltage and Temperature
3.5
3.0
2.5
T_A = 25°C
T_A = 100°C
2.0
T_A = –20°C
1.5
1.0
0.5
0
01
2
3
4
V_EN (V)
56
4059 G11
Manual Shutdown Supply Current
vs Temperature
14 _{VCC = 5V}
12 ^{VEN = 5V}
10
8
6
4
2
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
4059 G14
ACPR Pin (Pull-Down State)
I-V Curve (LTC4059A Only)
4.0
V_CC = 5V
3.5 ^{VBAT = 4.2V}
T_A = 25°C
3.0
2.5
2.0
1.5
1.0
0.5
0
012345678
V_ACPR (V)
4059 G18
UVLO Battery Drain Current
vs Battery Voltage
2.0
V_CC = 0V
1.8 T_A = 25°C
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0
1
2
3
4
5
V_BAT (V)
4059 G12
Manual Shutdown Threshold
Voltage vs Temperature
1.2
1.1
1.0
RISING
0.9
FALLING
0.8
0.7
0.6
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
4059 F15
Voltage Mode Disable Threshold
Voltage vs Temperature
(LTC4059 Only)
1.2
1.1
1.0
RISING
0.9
FALLING
0.8
0.7
0.6
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
4059 F16
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