MAX1898 Ver la hoja de datos (PDF) - Maxim Integrated
Número de pieza
componentes Descripción
Fabricante
MAX1898 Datasheet PDF : 12 Pages
| |||
Linear Charger for Single-Cell Li+ Battery
ELECTRICAL CHARACTERISTICS (continued)
(VIN = 8V, VBATT = 4V, EN/OK = open, RSET = 2.8kΩ, RSTRT = GND, TA = 0°C to +85°C, unless otherwise noted. Typical values are
at TA = +25°C.)
PARAMETER
Maximum Voltage (VIN - VDRV)
VBATT = 3.5V
CONDITIONS
MIN TYP MAX UNITS
3.5
7
V
VBATT Restart Threshold (As a
Percentage of Voltage-Loop Set
Point)
RSTRT = GND
92 95.25 98
%
RSTRT Internal Resistance
CURRENT LOOP
Internal Current-Sense Resistance
RMS Charge Current
IN to CS pin-to-pin resistance
100
kΩ
50
105
200
mΩ
1.4
A
Current-Sense Amplifier Gain, ISET
to IIN Fast Charge
Current-Sense Amplifier Gain, ISET
to IIN Prequal
Current-Loop Regulation Set Point
Current-Loop Gain
CHG Trip Threshold (As a
Percentage of Full Load Current)
TIMER FUNCTION
Timer Source/Sink Current
Timer Accuracy
CHG Output Low Current
CHG Output High Leakage
CHG Blink Rate
ICS = 500mA, VSET = 1.4V
ICS = 50mA, VISET = 0.14V,
VBATT = 2V
RSET = 2.8kΩ, VBATT = 3.5V, closed-loop
performance
∆VDRV/∆VISET
ILOAD falling, RSET = 2.8kΩ
ILOAD rising, RSET = 2.8kΩ
VCT = 0.9V
CCT = 100nF for 2 hours, 54 minutes nominal
V CHG = 1V
V CHG = 12V
Fault state (50% duty cycle), CT = 100nF
0.95
1
1.05 mA/A
0.73
1
1.30 mA/A
450
500
550
mA
26
dB
15
20
25
%
17
22
27
5
µA
-10
+10
%
4
5
6
mA
1
µA
1
1.5
2
Hz
ELECTRICAL CHARACTERISTICS
(VIN = 8V, VBATT = 4V, EN/OK = open, RSET = 2.8kΩ, RSTRT = GND, TA = -40°C to +85°C, unless otherwise noted.)
PARAMETER
Supply Voltage Range
CONDITIONS
MIN
MAX
4.5
12
Input OK Trip Point, IN Rising
(VIN - VBATT)
Input OK Trip Point, IN Falling
(VIN - VBATT)
VIN Input OK Trip Point, IN Rising
VIN Input OK Trip Point, IN Falling
EN/OK Sink Current (When Input
Power Not OK)
VIN = 3.9V, VBATT = 4V, VEN/OK = 0.8V
45
100
30
85
4.0
4.5
3.9
4.4
100
EN/OK Source Current (When Input
Power OK)
EN/OK Logic Input High
EN/OK Logic Input Low
VEN/OK = 2V
4.5V ≤ VIN ≤12V
4.5V ≤ VIN ≤12V
5
20
2
0.6
UNITS
V
mV
mV
V
V
µA
µA
V
V
_______________________________________________________________________________________ 3
Share Link: 