LTC4124 Просмотр технического описания (PDF) - Analog Devices
Номер в каталоге
Компоненты Описание
производитель
LTC4124 Datasheet PDF : 30 Pages
| |||
LTC4124
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the specified operating
junction temperature range, otherwise specifications are at TA = 25°C. VCC = 5V unless otherwise noted (Notes 2, 3).
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX UNITS
IC/10
C/10 Current Threshold in Constant Voltage IBAT Falling, % of ICHG
Mode
10
%
Hysteresis
1
%
tT
tBB
VNTC(COLD)
VNTC(HOT)
VNTC(HYS)
RNTC(OPEN)
VNTC(DIS)
Charge Termination Time
Bad Battery Detection Time
NTC Cold Threshold
NTC Hot Threshold
NTC Thresholds Hysteresis
NTC Open Circuit Input Resistance to VCC
NTC Disable Threshold
Hysteresis
Battery Discharging
VNTC Rising, % of VCC
VNTC Falling, % of VCC
% of VCC
INTC = –25µA
VNTC Rising, % of VCC
% of VCC
l 2.2
3.0
4.0
hours
l 30
45
60
mins
l 73
75
77
%
l 33
35
37
%
5
%
l 98.5 100 101.5
kΩ
l 90
94
98
%
5
%
Battery Discharge PowerPath Forward
Regulation Voltage
VBAT,VCC, IVCC = –1mA, VBAT ≥ VBAT_LBDIS
0
55
130
mV
Battery PowerPath Forward Turn-On
Threshold Voltage
VBAT,VCC
100
mV
Battery PowerPath Reverse Turn-Off
Threshold Voltage
VBAT,VCC, Not Charging
–100
mV
RDISCHG
Discharge Switch On Resistance
Maximum Battery Discharge Current
Threshold for Safety Disconnect
VBAT = 3.6V
VBAT = 3.6V
0.5
Ω
1.0
A
Low Battery Disconnect
VBAT_LBDIS Low Battery Disconnect Voltage
IBAT(LEAK) Battery Leakage Current When Disconnected
CHRG Status Pin
LBSEL = VCC, VBAT Falling
LBSEL = GND, VBAT Falling
VBAT < VBAT_LBDIS
l 3.136 3.200 3.264
V
l 2.646 2.700 2.754
V
l
0
50
nA
ICHRG(LKG) CHRG Open Drain Leakage Current
VCHRG = 5V
ICHRG
CHRG Pull Down Current
VCHRG = 400mV
fBLINK(SLW) Blink Slow Frequency
fBLINK(FAST) Blink Fast Frequency
Digital Input Pins (VSEL1, VSEL2, ISEL1, ISEL2, LBSEL, PRECHG)
1
µA
200
300
400
µA
0.6
0.8
1.1
Hz
4.5
6
8
Hz
VIL
Input Voltage Low
VIH
Input Voltage High
Input Leakage Current
0V ≤ VPIN ≤ VCC
l 0.4
l
l –1
V
VCC – 0.4V
V
1
µA
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: All currents into pins are positive; all voltages are referenced to
GND unless otherwise noted.
Note 3: The LTC4124 is tested under conditions such that TJ ≈ TA. The
LTC4124E is guaranteed to meet specifications from 0°C to 85°C junction
temperature. Specifications over the –20°C to 85°C operating junction
temperature are assured by design, characterization and correlation with
statistical process controls. Note that the maximum ambient temperature
consistent with these specifications is determined by specific operating
conditions in conjunction with board layout, the rated package thermal
impedance and other environmental factors. The junction temperature
(TJ, in °C) is calculated from the ambient temperature (TA, in °C) and
power dissipation (PD, in Watts) according to the following formula:
TJ = TA + (PD • θJA), where θJA (in °C/W) is the package thermal
impedance.
Rev. A
4
For more information www.analog.com
Share Link: 