Datasheet
LTM8061
3
8061fa
For more information www.linear.com/LTM8601
elecTrical characTerisTics
The l denotes the specifications which apply over the full internal
operating temperature range, otherwise specifications are at T
A
= 25°C. RUN = 2V.
PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Operating Voltage 32 V
V
IN
Start Voltage LTM8061-4.1/LTM8061-4.2
LTM8061-8.2/LTM8061-8.4
l
l
7.5
11.5
V
V
V
IN
OVLO Threshold V
IN
Rising 32 35 40 V
V
IN
OVLO Hysteresis 1 V
V
IN
UVLO Threshold LTM8061-4.1/LTM8061-4.2
LTM8061-8.2/LTM8061-8.4, V
IN
Rising
4.6
8.7
V
V
V
IN
UVLO Hysteresis 0.3 V
V
INA
to V
INC
/CLP Diode Forward Voltage Drop V
INA
Current = 2A 0.55 V
BAT Float Voltage LTM8061-4.1
LTM8061-4.2
LTM8061-8.2
LTM8061-8.4
l
l
l
l
4.08
4.06
4.18
4.16
8.16
8.12
8.36
8.32
4.1
4.2
8.2
8.4
4.12
4.14
4.22
4.24
8.24
8.28
8.44
8.48
V
V
V
V
V
V
V
V
Maximum BAT Charge Current (Note 3) 1.70 2.0 A
BAT Recharge Threshold Voltage LTM8061-4.1/LTM8061-4.2,
Relative to BAT Float Voltage
LTM8061-8.2/LTM8061-8.4,
Relative to BAT Float Voltage
–100
–200
mV
mV
BAT Precondition Threshold Voltage LTM8061-4.1/LTM8061-4.2
LTM8061-8.2
LTM8061-8.4
2.9
5.65
5.80
V
V
V
BAT Precondition Threshold Hysteresis Voltage 90 mV
Input Supply Current Standby Mode, Not Switching
RUN = 0.4V
85
15
µA
µA
Minimum BIAS Voltage for Proper Operation 2.9 V
V
INC
/CLP Threshold Voltage 50 mV
V
INC
/CLP Input Bias Current 200 nA
NTC Range Limit Voltage (High) V
NTC
Rising 1.25 1.36 1.45 V
NTC Range Limit
Voltage (Low) V
NTC
Falling 0.265 0.29 0.315 V
NTC Threshold Hysteresis For Both High and Low Range Limits 20 %
NTC Disable Impedance (Note 4) 250 500 kΩ
NTC Bias Current V
NTC
= 0.8V 47.5 50 52.5 µA
RNG/SS Bias Current 45 50 55 µA
Current Charge Programming: V
RNG/SS
/BAT Current 0.42 0.50 0.58 V/A
RUN Threshold Voltage V
RUN
Rising 1.15 1.20 1.25 V
RUN Hysteresis Voltage 120 mV
RUN Input Bias Current 1 µA
CHRG, FAULT Output Low Voltage
10mA Load on CHRG, FAULT Pins 0.4 V
TMR Charge/Discharge Current 25 µA
TMR Disable Threshold Voltage 0.1 0.25 V
C/10 Termination Current RNG/SS Open 200 mA
Operating Frequency 0.9 1 1.1 MHz