MAX8730 Datasheet, PDF (4/29 Pages) Maxim Integrated Products – Low-Cost Battery Charger

Low-Cost Battery Charger
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
Normal mode
MIN TYP MAX UNITS
4
6
mA
V_{INPON =VREFON} = low
10
20
SRC Quiescent Current
(INPON/REFON = Don’t Care)
BATT Input Current
Battery-Leakage Current
V_SRC = V_{BATT =}
12V, ASNS =
GND ^{(Note 2)}
V_{INPON = low,}
V_REFON = high
V_{INPON = high,}
V_REFON = low
V_{INPON =} V_REFON = high
V_BATT = 16.8V, V_SRC = 19V, ICTL = 0
V_BATT = 2V to 19V, V_SRC > V_BATT + 0.3V
I_CSIP + I_CSIN + I_BATT, ASNS = GND
I_CSIP + I_CSIN + I_BATT +
I_CSSP + I_CSSN + I_SRC,
ASNS = REFON = GND
V_REFON = 5.4V
INPON = GND
300
600
µA
300
600
350 600
8
16
µA
300
600
2
5
300
600
µA
2
5
LDO Output Voltage
LDO Load Regulation
LDO Undervoltage Lockout
Threshold
REFERENCES
REF Output Voltage
8.0V < V_SRC < 28V, no load
0 < ILDO < 10mA
V_SRC = 8.0V
Ref
5.2
5.35
5.5
V
20
50
mV
4
V
4.18 4.20 4.22
V
REF Undervoltage Lockout
Threshold
REF falling
3.1
3.9
V
SWREF Output Voltage
SWREF Load Regulation
TRIP POINTS
ACIN Threshold
8.0V < VSRC < 28V, no load
0.1mA < I_SWREF < 20mA
ACIN rising
3.234 3.3 3.366
V
20
50
mV
2.037 2.1 2.163
V
ACIN Threshold Hysteresis
ACIN Input Bias Current
SWITCHING REGULATOR
DHI Off-Time
DHI Off-Time K Factor
V_ACIN = 2.048V
V_BATT = 16.0V
V_BATT = 16.0V
60
mV
-1
+1
µA
300
350
400
ns
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
Charge Disable Threshold
DHIV Output Voltage
DHIV Sink Current
V_SRC - V_BATT, SRC falling
With respect to SRC
160
200
240
mV
40
60
80
mV
-4.3 -4.8 -5.5
V
10
mA
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