MAX8730
Low-Cost Battery Charger
_______________________________________________________________________________________ 5
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1. V
SRC
= V
ASNS
= V
CSSP
= V
CSSN
= 18V, V
BATT
= V
CSIP
= V
CSIN
= 12V, V
VCTL
= V
ICTL
= 1.8V, MODE = float,
ACIN = 0, CLS = REF, REFON = LDO, INPON = LDO, RELTH = 2V. T
A
= 0°C to +85°C, unless otherwise noted. Typical values are at
T
A
= +25°C.)
DHI Resistance Low I
DHI
= -10mA 2 4 Ω
DHI Resistance High I
DHI
= 10mA 1 2 Ω
ERROR AMPLIFIERS
V C TL = 3.6V , V
BAT T
= 16.8V , M OD E = LD O
0.0625 0.125 0.250
GMV Loop Transconductance
V C TL = 3.6V , V
BAT T
= 12.6V , M OD E = FLOAT 0.0833 0.167 0.333
GMI Loop Transconductance ICTL = 3.6V, V
CSSP
- V
CSIN
= 75mV 0.5 1 2
GMS Loop Transconductance V
CLS
= 2.048V, V
CSSP
- V
CSSN
= 75mV 0.5 1 2
CCI/CCS/CCV Clamp Voltage
1.1V < V
CCV
< 3.0V,
1.1V < V
CCI
< 3.0V,
1.1V < V
CCS
< 3.0V
150 300
MODE, REFON Input Low Voltage
0.5 V
MODE Input Middle Voltage 1.9
2.65
M OD E , RE FON Inp ut H i g h V ol tag e
3.4 V
MODE, REFON, INPON Input
Bias Current
MODE = 0 or 3.6V -2 +2 µA
V
INPON
rising
2.2
V
INPON Threshold
V
INPON
falling 0.8 V
ADAPTER DETECTION
ACOK Voltage Range 0 28 V
ACOK Sink Current V
ACOK
= 0.4V, ACIN = 1.5V 1 mA
ACOK Leakage Current V
ACOK
= 28V, ACIN = 2.5V 1 µA
BATTERY DETECTION
V
MODE
= V
LDO
+140
BATT Overvoltage Threshold
V
VCTL
= V
LDO
, BATT
rising; result with respect
to battery-set voltage
V
MODE
= FLOAT
+100
mV
BATT Overvoltage Hysteresis
100
RELTH Operating Voltage Range
0.9 2.6 V
RELTH Input Bias Current V
RELTH
= 0.9V to 2.6V
-50 +50 nA
V
RELTH
= 0.9V
4.42
4.58
BATT Minimum Voltage Trip
Threshold
V
BATT
falling
V
RELTH
= 2.6V
12.77 13.0 13.23
V
PDS, PDL SWITCH CONTROL
Adapter-Absence Detect
Threshold
V
ASNS
- V
BATT
, V
ASNS
falling
-300 -280 -240
mV
Adapter-Detect Threshold V
ASNS
- V
BATT
-140 -100
-60 mV
PDS Output Low Voltage Result with respect to SRC, I
PDS
= 0 -8 -10 -12 V
PDS/PDL Output High Voltage Result with respect to SRC, I
PD_
= 0
-0.2
-0.5 V
PDS/PDL Turn-Off Current V
PDS
= V
SRC
- 2V, V
SRC
= 16V 6 12 mA
(16 Seiten)
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