Instruction Manual

MAX8730
Low-Cost Battery Charger
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Note 1: Accuracy does not include errors due to external-resistance tolerances.
Note 2: In this mode, SRC current is drawn from the battery.
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
BATTERY DETECTION
RELTH Operating Voltage Range
0.9 2.6 V
V
RELTH
= 0.9V
4.42 4.58
BATT Minimum Voltage Trip
Threshold
V
BATT
falling
V
RELTH
= 2.6V
12.77 13.23
V
PDS, PDL SWITCH CONTROL
Adapter-Absence-Detect
Threshold
V
ASNS
- V
BATT
, V
ASNS
falling
-310 -240
mV
Adapter-Detect Threshold V
ASNS
- V
BATT
-140
-60 mV
PDS Output Low Voltage Result with respect to SRC, I
PDS
= 0 -7 -12 V
PDS/PDL Output High Voltage Result with respect to SRC, I
PD_
= 0
-0.5
V
PDS/ PDL Turn-Off Current V
PDS
= V
SRC
- 2V, V
SRC
= 16V 6 mA
PDS Turn-On Current PDS = SRC 6 mA
PDL Turn-On Resistance PDL = GND 50
100
200 kΩ
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
= -40°C to +85°C, unless otherwise noted.)