LTC4055-1_15 Datasheet, PDF (7/24 Pages) Linear Technology – USB Power Controller and Li-Ion Charger

LTC4055/LTC4055-1
TYPICAL PERFORMANCE CHARACTERISTICS
Ideal Diode and Schottky Diode
Forward Voltage vs Current
1000
900
800
V_BAT = 3.5V
V_IN = 0V
T_A = 25°C
700
600
500
400
SCHOTTKY
300
200
100
0
0 50 100 150 200 250 300 350 400 450
V_FWD (mV)
4055 G19
Input Connect Waveforms
V_IN
5V/DIV
V_OUT
5V/DIV
I_IN
0.5A/DIV
I_BAT
0.5A/DIV
V_BAT = 3.5V
I_OUT = 100mA
1ms/DIV
4055 G20
Response to HPWR
WALL Connect Waveforms
(V_IN = 0V)
HPWR
5V/DIV
I_IN
0.5A/DIV
I_BAT
0.5A/DIV
WALL
5V/DIV
OUT
5V/DIV
I_WALL
0.5A/DIV
I_BAT
0.5A/DIV
Input Disconnect Waveforms
V_IN
5V/DIV
V_OUT
5V/DIV
I_IN
0.5A/DIV
I_BAT
0.5A/DIV
V_BAT = 3.5V
I_OUT = 100mA
1ms/DIV
4055 G22
WALL Disconnect Waveforms
(V_IN = 0V)
WALL
5V/DIV
OUT
5V/DIV
I_WALL
0.5A/DIV
I_BAT
0.5A/DIV
V_BAT = 3.5V
I_OUT = 50mA
250μs/DIV
4055 G21
V_BAT = 3.5V
I_OUT = 100mA
R_PROG = 57.6k
1ms/DIV
4055 G24
V_BAT = 3.5V
I_OUT = 100mA
R_PROG = 57.6k
1ms/DIV
4055 G25
Response to Suspend
SUSPEND
5V/DIV
OUT
5V/DIV
I_IN
0.5A/DIV
I_BAT
0.5A/DIV
V_BAT = 3.5V
I_OUT = 50mA
1ms/DIV
WALL Connect Waveforms
(V_IN = 5V)
WALL
5V/DIV
I_IN
0.5A/DIV
I_WALL
0.5A/DIV
I_BAT
0.5A/DIV
WALL Disconnect Waveforms
(V_IN = 5V)
WALL
5V/DIV
I_IN
0.5A/DIV
I_WALL
0.5A/DIV
I_BAT
0.5A/DIV
4055 G23
V_BAT = 3.5V
I_OUT = 100mA
R_PROG = 57.6k
1ms/DIV
4055 G26
V_BAT = 3.5V
I_OUT = 100mA
R_PROG = 57.6k
1ms/DIV
4055 G27
4055fb
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