Datasheet

LTC3566/LTC3566-2
4
3566fb
ELECTRICAL CHARACTERISTICS
The denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations 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
R
ON_CHG
Battery Charger Power FET On
Resistance (Between V
OUT
and BAT)
0.18 Ω
T
LIM
Junction Temperature in Constant
Temperature Mode
110 °C
NTC
V
COLD
Cold Temperature Fault Threshold
Voltage
Rising Threshold
Hysteresis
75.0 76.5
1.5
78.0 %V
BUS
%V
BUS
V
HOT
Hot Temperature Fault Threshold
Voltage
Falling Threshold
Hysteresis
33.4 34.9
1.5
36.4 %V
BUS
%V
BUS
V
DIS
NTC Disable Threshold Voltage Falling Threshold
Hysteresis
0.7 1.7
50
2.7 %V
BUS
mV
I
NTC
NTC Leakage Current V
NTC
= V
BUS
= 5V –50 50 nA
Ideal Diode
V
FWD
Forward Voltage V
BUS
= 0V, I
OUT
= 10mA
I
OUT
= 10mA
2
15
mV
mV
R
DROPOUT
Internal Diode On-Resistance,
Dropout
V
BUS
= 0V 0.18 Ω
I
MAX_DIODE
Internal Diode Current Limit 1.6 A
Always On 3.3V Supply
V
LDO3V3
Regulated Output Voltage 0mA < I
LDO3V3
< 25mA 3.1 3.3 3.5 V
R
CL_LDO3V3
Closed-Loop Output Resistance 4 Ω
R
OL_LDO3V
Dropout Output Resistance 23 Ω
Logic (I
LIM0
, I
LIM1
, EN1, CHRGEN, MODE)
V
IL
Logic Low Input Voltage 0.4 V
V
IH
Logic High Input Voltage 1.2 V
I
PD1
I
LIM0
, I
LIM1
, EN1, MODE
Pull-Down Currents
1.6 μA
I
PD1_CHRGEN
CHRGEN Pull-Down Current 1.6 10 μA
Buck-Boost Regulator
V
IN1
Input Supply Voltage 2.7 5.5 V
V
OUTUVLO
V
OUT
UVLO -V
OUT
Falling
V
OUT
UVLO - V
OUT
Rising
V
IN1
Connected to V
OUT
Through
Low Impedance. Switching Regulator
Disabled in UVLO
2.5 2.6
2.8 2.9
V
V
f
OSC
Oscillator Frequency PWM Mode
1.8 2.25 2.7 MHz
I
VIN1
Input Current PWM Mode, I
OUT1
= 0μA
Burst Mode
®
Operation, I
OUT1
= 0μA
Shutdown
220
13
0
400
20
1
μA
μA
μA
Burst Mode is a registered trademark of Linear Technology Corporation.