Rainbow Electronics MAX8730 - Manual (Page 6)

MAX8730
Low-Cost Battery Charger
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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.)
ELECTRICAL CHARACTERISTICS
(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.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
PDS Turn-On Current PDS = SRC 6 12 mA
PDL Turn-On Resistance PDL = GND 50 100 200 k Ω
PDS/PDL Delay Time 5.0 µs
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
CHARGE-VOLTAGE REGULATION
VCTL Range 0 3.6 V
Not including resistor
tolerances
-1.2 +1.2
V VCTL = 3.6V
or 0V
Including 1% resistor
tolerances
-1.25 +1.25
Battery-Regulation-Voltage
Accuracy
V VCTL = VLDO (3 or 4 cells) -0.8 +0.8
%
V VCTL Default Threshold V VCTL rising 4.4 V
VCTL Input Bias Current
SRC = BATT, ASNS = GND INPON =
REFON = 0, V
VCTL = 5V
0 16 µA
CHARGE-CURRENT REGULATION
ICTL Range 0 3.6 V
128.25 141.75 mV
V ICTL = 3.6V
-5 +5 %
70 80 mV
Full-Charge-Current Accuracy
(CSIP to CSIN)
V ICTL = 2.0V
-6.7 +6.7 %
Trickle-Charge-Current Accuracy V ICTL = 120mV 2 10 mV
Charge-Current Gain Error Based on V ICTL = 3.6V and V ICTL = 0.12V -1.9 +1.9 %
Charge-Current Offset Error Based on V ICTL = 3.6V and V ICTL = 0.12V -2 +2 mV
BATT/CSIP/CSIN Input Voltage
Range
0 19 V
Charging enabled 1000
CSIP/CSIN Input Current Charging disabled, SRC = BATT,
ASNS = GND, or V
ICTL = 0V
16
µA
ICTL falling 50 80 ICTL Power-Down Mode
Threshold
ICTL rising 70 110
mV