LTC4156IUFD データシートの表示（PDF） - Linear Technology
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LTC4156IUFD
Linear Technology
LTC4156IUFD Datasheet PDF : 52 Pages
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LTC4156
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C (Note 2). VBUS = 5V, BATSNS = 3.3V,
DVCC = 3.3V, RCLPROG1 = RCLPROG2 = 1.21k, RPROG = 499Ω, unless otherwise noted.
Battery and VBUS Currents
vs VOUT Current
0.8
0.6
INPUT CURRENT
0.4
CHARGE CURRENT
0.2
0
–0.2
500mA INPUT CURRENT LIMIT MODE
–0.4
0
0.2
0.4
0.6
0.8
1.0
VOUT CURRENT (A)
4155 G01
Switching Regulator Efficiency
95
2.5
93
EFFICIENCY
TO VOUT
91
2.0
89
EFFICIENCY
87
TO BATTERY
1.5
85
83
81
79
77
75
0
POWER LOST
TO BATTERY
POWER LOST
TO VOUT
0.5 1.0 1.5 2.0 2.5
CURRENT (A)
1.0
0.5
0
3.0
4156 G04
Battery and VBUS Currents
vs VOUT Current
3.5
INPUT CURRENT
3.0
2.5
2.0
CHARGE CURRENT
1.5
1.0
0.5
0
–0.5
–1.0
3A INPUT CURRENT LIMIT MODE
–1.5
0
1
2
3
4
5
VOUT CURRENT (A)
4155 G02
Battery Charger Total Efficiency
vs Battery Voltage
95
VFLOAT = 3.8V
90
12.5% CHARGE
CURRENT MODE
85
80
100% CHARGE
CURRENT MODE
75
70
65
Battery Drain Current
vs Temperature
10
VBUS = 0V
9
8
7
6
5
4
3
SUSPEND MODE (µA)
2
1
SHIP AND STORE MODE (µA)
0
– 40 –25 –10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
4156 G03
USB Compliant Load Current
Available Before Discharging
Battery
1.75
VFLOAT = 3.8V
1.50
900mA MODE
1.25
1.00
500mA MODE
0.75
60
2.4
2.7
3.0
3.3
3.6
3.9
BATTERY VOLTAGE (V)
4156 G05
INCLUDES LOSSES FROM 2× Si7938DP OVP FETS
XFL4020-102ME INDUCTOR AND Si5481DU CHARGER FET
0.50
2.4
2.7 3.0 3.3 3.6 3.9
BATTERY VOLTAGE (V)
4155 G06
500mA USB Limited Battery
Charge Current vs Battery Voltage
0.8
VFLOAT = 3.8V
0.7
0.6
100% CHARGE
CURRENT MODE
0.5
0.4
12.5% CHARGE
CURRENT MODE
0.3
0.2
0.1
0
2.4
2.7
3.0
3.3
3.6 3.9
BATTERY VOLTAGE (V)
4156 G07
100mA USB Limited Battery
Charge Current vs Battery Voltage
80
70
60
50
40
30
20
10
VFLOAT = 3.8V
0
2.4
2.7
3.0
3.3
3.6 3.9
BATTERY VOLTAGE (V)
4156 G08
VOUT Voltage vs Battery Voltage
4.5
4.2
100% CHARGE CURRENT MODE
50% CHARGE CURRENT MODE
12.5% CHARGE CURRENT MODE
3.9
CHARGER DISABLED
3.6
3.3
3.0
2.4
VFLOAT = 3.8V
IVOUT = 0A
2.7 3.0 3.3 3.6 3.9
BATTERY VOLTAGE (V)
4155 G09
4156f
9
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