LTC3558_15 Datasheet, PDF (3/32 Pages) Linear Technology – Linear USB Battery Charger with Buck and Buck-Boost Regulators

LTC3558
ELECTRICAL CHARACTERISTICS The l denotes specifications that apply over the full operating temperature
range, otherwise specifications are at T_A = 25°C. V_CC = 5V, BAT = PV_IN1 = PV_IN2 = 3.6V, R_PROG = 1.74k, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Battery Charger
V_CC
I_VCC
V_FLOAT
I_CHG
I_BAT
V_UVLO
ΔV_UVLO
V_DUVLO
ΔV_DUVLO
V_PROG
h_PROG
I_TRKL
V_TRKL
ΔV_TRKL
ΔV_RECHRG
t_RECHRG
t_TERM
t_BADBAT
h_C/10
t_C/10
R_ON(CHG)
T_LIM
NTC
Input Supply Voltage
l
Battery Charger Quiescent Current
(Note 4)
BAT Regulated Output Voltage
Constant-Current Mode Charge
Current
Battery Drain Current
Undervoltage Lockout Threshold
Undervoltage Lockout Hysteresis
Standby Mode, Charge Terminated
Suspend Mode, V_SUSP = 5V
0°C ≤ T_A ≤ 85°C
HPWR = 1
l
HPWR = 0
Standby Mode, Charger Terminated, EN1 = EN2 = 0
Shutdown, V_CC < V_UVLO, BAT = 4.2V, EN1 = EN2 = 0
Suspend Mode, SUSP = 5V, BAT = 4.2V, EN1 = EN2 = 0
V_CC = 0V, EN1 = EN2 = 1, MODE = 1,
FB1 = FB2 = 0.85V, V_OUT2 = 3.6V
BAT = 3.5V, V_CC Rising
BAT = 3.5V
Differential Undervoltage Lockout
Threshold
Differential Undervoltage Lockout
Hysteresis
PROG Pin Servo Voltage
Ratio of I_BAT to PROG Pin Current
Trickle Charge Current
Trickle Charge Threshold Voltage
BAT = 4.05V, (V_CC – BAT) Falling
BAT = 4.05V
HPWR = 1
HPWR = 0
BAT < V_TRKL
BAT < V_TRKL
BAT Rising
Trickle Charge Hysteresis Voltage
Recharge Battery Threshold Voltage
Recharge Comparator Filter Time
Threshold Voltage Relative to V_FLOAT
BAT Falling
Safety Timer Termination Period
Bad Battery Termination Time
End-of-Charge Indication Current Ratio
BAT = V_FLOAT
BAT < V_TRKL
(Note 5)
End-of-Charge Comparator Filter Time
Battery Charger Power FET On-
Resistance (Between V_CC and BAT)
Junction Temperature in Constant
Temperature Mode
I_BAT Falling
I_BAT = 190mA
4.3
4.179
4.165
440
84
3.85
30
36
2.8
–75
3.5
0.4
0.085
285
8.5
4.200
4.200
460
92
–3.5
–2.5
–1.5
–50
4
200
50
130
1.000
0.200
0.100
800
46
2.9
100
–95
1.7
4
0.5
0.1
2.2
500
105
5.5
400
17
4.221
4.235
500
100
–7
–4
–3
–100
4.125
70
56
3
–115
4.5
0.6
0.11
V
μA
μA
V
V
mA
mA
μA
μA
μA
μA
V
mV
mV
mV
V
V
V
mA/mA
mA
V
mV
mV
ms
Hour
Hour
mA/mA
ms
mΩ
°C
V_COLD
V_HOT
V_DIS
I_NTC
Cold Temperature Fault Threshold
Voltage
Hot Temperature Fault Threshold
Voltage
NTC Disable Threshold Voltage
NTC Leakage Current
Rising NTC Voltage
Hysteresis
Falling NTC Voltage
Hysteresis
Falling NTC Voltage
Hysteresis
V_NTC = V_CC = 5V
75 76.5 78
1.6
33.4 34.9 36.4
1.6
l 0.7 1.7 2.7
50
–1
1
%V_CC
%V_CC
%V_CC
%V_CC
%V_CC
mV
μA
3558f
3