Rainbow Electronics MAX1817 - Manual (Page 3)

MAX1817
Compact, High-Efficiency, Dual-Output
Step-Up DC-DC Converter
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ELECTRICAL CHARACTERISTICS (continued)
(V ON = V ONLCD = V OUT = +3.3V, FB = GND, T A = 0°C to +85°C, unless otherwise noted. Typical values are at T A = +25°C.)
PARAMETER CONDITIONS MIN TYP MAX UNITS
LX Leakage Current V ON = GND, V LX = 5.5V 0.1 1 µA
ON Input Low Voltage 1.8V < V OUT < 5.5V, V FB = 0.5V 400 mV
ON Input High Voltage 1.8V < V OUT < 5.5V, V FB = 0.5V 1.6 V
ON Input Bias Current 1 µA
LCD OUTPUT
LXLCD Voltage 28 V
LXLCD On-Resistance V OUT = 3.3V, I LXLCD = 100mA 1.1 2.0 Ω
LXLCD Current Limit 0.28 0.5 0.7 A
LXLCD Leakage Current V LXLCD = 28V, V ONLCD = 0 0.1 1 µA
FBLCD Regulation Voltage 1.20 1.25 1.30 V
FBLCD Input Bias Current V FBLCD = 1.35V 50 nA
LCD Line Regulation I
LOAD
= 5mA, V
IN
= +2V to +3V 0.1 %
LCD Load Regulation I LOAD = 1mA to 5mA, V IN = +2.5V 0.5 %
Maximum LXLCD On-Time 4 9 14 µs
V FBLCD
≥ 1.2V 0.5 1 1.5
Minimum LXLCD Off-Time
V FBLCD
≤ 0.7V 2.4 5 7.5
µs
ONLCD Input Low Voltage 2.5V < V OUT < 5.5V 400 mV
ONLCD Input High Voltage 2.5V < V OUT < 5.5V 1.6 V
ONLCD Input Bias Current 1 µA
ELECTRICAL CHARACTERISTICS
(V ON = V ONLCD = V OUT = +3.3V, FB = GND, T A = -40°C to +85°C, unless otherwise noted.) (Note 1)
PARAMETER CONDITIONS MIN MAX UNITS
GENERAL
Input Voltage Range 1.5 5.5 V
Startup Voltage R LOAD =
∞,
V FB = 1.35V 1.7 V
Quiescent Current from OUT
(Main Only)
V FB = V FBLCD = 1.35V, V ONLCD = 0 10 µA
Quiescent Current from OUT V FB = V FBLCD = 1.35V 30 µA
Shutdown Quiescent Current V ON = V ONLCD = 0 1 µA
MAIN OUTPUT
V OUT rising, V FB = 1.35V 2.4
OUT Undervoltage Lockout
V OUT falling, V FB = 1.35V 1.95
V
Fixed-Mode Output Voltage V FB
≤ 45mV 3.14 3.47 V
Adjustable-Mode FB Regulation
Voltage
1.20 1.30 V
FB Input Bias Current V FB = 1.35V 50 nA