Datasheet

3
LTC4060
4060f
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
The ● indicates specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 5V, V
BAT
= 2.8V, GND = 0V unless otherwise specified. All
currents into the device pins are positive and all currents out of the device pins are negative. All voltages are referenced to GND
unless otherwise specified.
ELECTRICAL CHARACTERISTICS
V
UVI2
Undervoltage Lockout Exit Threshold SEL0 = 0, SEL1 = V
CC
, V
CC
Increasing ● 6.67 6.81 6.95 V
V
UVD2
Undervoltage Lockout Entry Threshold SEL0 = 0, SEL1 = V
CC
, V
CC
Decreasing ● 6.57 6.71 6.85 V
V
UVI3
Undervoltage Lockout Exit Threshold SEL0 = V
CC
, SEL1 = V
CC
, V
CC
Increasing ● 8.28 8.47 8.65 V
V
UVD3
Undervoltage Lockout Entry Threshold SEL0 = V
CC
, SEL1 = V
CC
, V
CC
Decreasing ● 8.18 8.37 8.55 V
V
UVH
Undervoltage Lockout Hysteresis For All SEL0, SEL1 Options 100 mV
Charging Performance
I
FCH
High Fast Charge Current (Notes 7, 10) R
PROG
= 698Ω, 5V < V
CC
< 10V ● 1.9 2 2.1 A
I
FCL
Low Fast Charge Current (Note 7) R
PROG
= 3480Ω, 4.5V < V
CC
< 10V ● 0.35 0.4 0.45 A
I
PCH
High Precharge Current (Note 7) R
PROG
= 698Ω, 4.5V < V
CC
< 10V 320 400 480 mA
I
PCL
Low Precharge Current (Note 7) R
PROG
= 3480Ω, 4.5V < V
CC
< 10V 40 80 120 mA
I
BRD
Battery Removal Detection Bias Current 4.5V < V
CC
< 10V, V
BAT
= V
CC
– 0.4V ● –450 –300 –160 µA
V
BR
Battery Removal Threshold Voltage (Note 8) V
CELL
Increasing, 4.5V < V
CC
< 10V ● 1.95 2.05 2.15 V
V
BRH
Battery Removal Threshold Hysteresis Voltage V
CELL
Decreasing 50 mV
(Note 8)
V
BOV
Battery Overvoltage Threshold (Note 8) V
CELL
Increasing, 4.5V < V
CC
< 10V ● 1.85 1.95 2.05 V
V
BOVH
Battery Overvoltage Threshold Hysteresis (Note 8) V
CELL
Decreasing 50 mV
V
FCQ
Fast Charge Qualification Threshold Voltage V
CELL
Increasing, 4.5V < V
CC
< 10V 840 900 960 mV
(Note 8)
V
FCQH
Fast Charge Qualification Threshold Hysteresis V
CELL
Decreasing 50 mV
Voltage (Note 8)
V
IDT
Initial Delay Hold-Off Threshold Voltage (Note 8) V
CELL
Increasing, 4.5V < V
CC
< 10V 1.24 1.3 1.36 V
V
IDTH
Initial Delay Hold-Off Threshold Hysteresis Voltage V
CELL
Decreasing 50 mV
(Note 8)
V
MDV
–∆V Termination (Note 8) CHEM = V
CC
(NiCd) ● 11 16 21 mV
CHEM = 0V (NiMH)
● 5814mV
V
PROG
Program Pin Voltage 4.5V < V
CC
< 10V, R
PROG
= 635Ω ● 1.45 1.5 1.54 V
and 3480Ω
V
ART
Automatic Recharge Programmed Threshold V
CELL
Decreasing, V
ARCT
= 1.1V, ● 1.065 1.1 1.135 V
Voltage Accuracy (Note 8) 4.5V < V
CC
< 10V
V
ARDT
Automatic Recharge Default Threshold Voltage V
CELL
Decreasing, V
ARCT
= V
CC
, ● 1.235 1.3 1.365 V
Accuracy (Note 8) 4.5V < V
CC
< 10V
V
ARH
Automatic Recharge Threshold Voltage Hysteresis V
CELL
Increasing 50 mV
(Note 8)
V
ARDEF
Automatic Recharge Pin Default Enable Threshold V
CC
V
CC
V
Voltage – 0.8 – 0.2
V
ARDIS
Automatic Recharge Pin Disable Threshold 250 650 mV
Voltage
I
ARL
Automatic Recharge Pin Pull-Down Current V
ARCT
= 1.3V ● 0.15 1.5 µA
V
CLD
NTC Pin Cold Threshold Voltage V
NTC
Decreasing, 4.5V < V
CC
< 10V ● 0.83 • 0.86 • 0.89 • V
V
CC
V
CC
V
CC
V
CLDH
NTC Pin Cold Threshold Hysteresis Voltage V
NTC
Increasing 150 mV
V
HTI
NTC Pin Hot Charge Initiation Threshold Voltage V
NTC
Decreasing, 4.5V < V
CC
< 10V ● 0.47 • 0.5 • 0.53 • V
V
CC
V
CC
V
CC