Rainbow Electronics MAX8730 - Manual (Page 4)

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
Normal mode 4 6 mA
V INPON =V REFON = low 10 20
V INPON = low,
V REFON = high
300 600
V INPON = high,
V REFON = low
300 600
SRC Quiescent Current
(INPON/REFON = Don’t Care) V SRC = V BATT =
12V, ASNS =
GND (Note 2)
V INPON = V REFON = high 350 600
µA
V BATT = 16.8V, V SRC = 19V, ICTL = 0 8 16
BATT Input Current
V BATT = 2V to 19V, V SRC > V BATT + 0.3V 300 600
µA
I CSIP + I CSIN + I BATT , ASNS = GND 2 5
V REFON = 5.4V 300 600
Battery-Leakage Current
I
CSIP
+ I
CSIN
+ I
BATT
+
I CSSP + I CSSN + I SRC ,
ASNS = REFON = GND INPON = GND 2 5
µA
LDO Output Voltage 8.0V < V SRC < 28V, no load 5.2 5.35 5.5 V
LDO Load Regulation 0 < ILDO < 10mA 20 50 mV
LDO Undervoltage Lockout
Threshold
V SRC = 8.0V 4 V
REFERENCES
REF Output Voltage Ref 4.18 4.20 4.22 V
REF Undervoltage Lockout
Threshold
REF falling 3.1 3.9 V
SWREF Output Voltage 8.0V < VSRC < 28V, no load 3.234 3.3 3.366 V
SWREF Load Regulation 0.1mA < I SWREF < 20mA 20 50 mV
TRIP POINTS
ACIN Threshold ACIN rising 2.037 2.1 2.163 V
ACIN Threshold Hysteresis 60 mV
ACIN Input Bias Current V ACIN = 2.048V -1 +1 µA
SWITCHING REGULATOR
DHI Off-Time V BATT = 16.0V 300 350 400 ns
DHI Off-Time K Factor V BATT = 16.0V 4.8 5.6 6.4 V x µs
Sense Voltage for Minimum
Discontinuous Mode Ripple
Current
V CSIP - V CSIN 7 mV
Cycle-by-Cycle Current-Limit
Sense Voltage
160 200 240 mV
Charge Disable Threshold V SRC - V BATT , SRC falling 40 60 80 mV
DHIV Output Voltage With respect to SRC -4.3 -4.8 -5.5 V
DHIV Sink Current 10 mA