LTC3566-2_15 Datasheet, PDF (3/28 Pages) Linear Technology – High Efficiency USB Power Manager Plus 1A Buck-Boost Converter

LTC3566/LTC3566-2
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T_A = 25°C. V_BUS = 5V, V_BAT = 3.8V, DV_CC = 3.3V, R_CLPROG = 3.01k, R_PROG = 1k,
V_IN1 = V_OUT1 = 3.8V unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
I_OUT
(PowerPath)
V_OUT Current Available Before
Loading BAT
1x Mode, BAT = 3.3V
5x Mode, BAT = 3.3V
10x Mode, BAT = 3.3V
Suspend Mode
135
mA
672
mA
1251
mA
0.32
mA
V_CLPROG
CLPROG Servo Voltage in Current 1x, 5x, 10x Modes
Limit
Suspend Mode
1.188
V
100
mV
V_{UVLO_VBUS}
V_BUS Undervoltage Lockout
Rising Threshold
Falling Threshold
4.30
4.35
V
3.95
4.00
V
V_{UVLO_VBUS}
-VBAT
V_OUT
V_BUS to BAT Differential
Undervoltage Lockout
V_OUT Voltage
f_OSC
Switching Frequency
R_{PMOS_PowerPath} PMOS On-Resistance
R_{NMOS_PowerPath} NMOS On-Resistance
I_{PEAK_PowerPath} Peak Switch Current Limit
Rising Threshold
Falling Threshold
200
mV
50
mV
1x, 5x, 10x Modes, 0V < BAT < 4.2V,
I_OUT = 0mA, Battery Charger Off
3.4
BAT + 0.3
4.7
V
USB Suspend Mode, I_OUT = 250μA
4.5
4.6
4.7
V
●
1.8
2.25
2.7
MHz
0.18
Ω
0.30
Ω
1x, 5x Modes
10x Mode
2
A
3
A
Battery Charger
V_FLOAT
BAT Regulated Output Voltage
4.179
4.200
4.221
V
● 4.165
4.200
4.235
V
I_CHG
Constant Current Mode Charge
Current
R_PROG = 5k
980
1022
1065
mA
185
204
223
mA
I_BAT
Battery Drain Current
V_BUS > V_UVLO, Battery Charger Off,
I_OUT = 0μA
V_BUS = 0V, I_OUT = 0μA (Ideal Diode Mode)
LTC3566
LTC3566-2
2
3.5
5
μA
27
38
μA
32
44
μA
V_PROG
V_{PROG_TRIKL}
PROG Pin Servo Voltage
PROG Pin Servo Voltage in Trickle
Charge
V_BAT < V_TRIKL
1.000
V
0.100
V
V_C/10
h_PROG
I_TRKL
V_TRIKL
ΔV_TRKL
V_RECHRG
t_TERM
t_BADBAT
h_C/10
C/10 Threshold Voltage at PROG
Ratio of I_BAT to PROG Pin Current
Trickle Charge Current
Trickle Charge Threshold Voltage
Trickle Charge Hysteresis Voltage
Recharge Battery Threshold Voltage
Safety Timer Termination
Bad Battery Termination Time
End of Charge Indication Current
Ratio
BAT < V_TRKL
BAT Rising
Threshold Voltage Relative to V_FLOAT
Timer Starts When BAT = V_FLOAT
BAT < V_TRKL
(Note 5)
100
mV
1022
mA/mA
100
mA
2.7
2.85
3.0
V
135
mV
–75
–100
–125
mV
3.3
4
5
Hour
0.42
0.5
0.63
Hour
0.088
0.1
0.112 mA/mA
V_CHRG
I_CHRG
CHRG Pin Output Low Voltage
CHRG Pin Leakage Current
I_CHRG = 5mA
V_CHRG = 5V
65
100
mV
1
μA
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