Rainbow Electronics MAX8730 - Manual (Page 3)

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.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
ICTL falling 50 65 80 ICTL Power-Down Mode
Threshold
ICTL rising 70 90 110
mV
V ICTL = 3V -1 +1
ICTL Input Bias Current
SRC = BATT, ASNS = GND, V
ICTL = 5V -1 +1
µA
CSSP-to-CSSN Full-Scale
Current-Sense Voltage
72.75 75.75 78.75 mV
72.75 75.75 78.75 mV
V CLS = REF (trim point)
-4 +4 %
50 53 56 mV
V CLS = REF x 0.7
-5.6 +5.6 %
36 38 40.5 mV
Input Current-Limit Accuracy
V CLS = REF x 0.5
-6.6 +6.6 %
CSSP/CSSN Input Voltage Range 8.0 28 V
V CSSP = V CSSN = V SRC > 8.0V 400 800
CSSP/CSSN Input Current
V SRC = 0V 0.1 1
µA
CLS Input Range 1.1 REF V
CLS Input Bias Current V CLS = 2.0V -1 +1 µA
IINP Transconductance V CSSP - V CSSN = 56mV 2.66 2.8 2.94 µA/mV
V CSSP - V CSSN = 100mV, V IINP = 0 to 4.5V -5 +5
V CSSP - V CSSN = 75mV -8 +8
V CSSP - V CSSN = 56mV -5 +5
IINP Accuracy
V CSSP - V CSSN = 20mV -12.5 +12.5
%
IINP Gain Error Based on V IC T L = RE F x 0.5 and V IC T L = RE F -7 +7 %
IINP Offset Error Based on V IC T L = RE F x 0.5 and V IC T L = RE F -2 +2 mV
IINP Fault threshold IINP rising 4.1 4.2 4.3 V
SUPPLY AND LINEAR REGULATOR
SRC Input Voltage Range 8.0 28 V
SRC falling 7 7.4 SRC Undervoltage Lockout
Threshold
SRC rising 7.5 8
V