Rainbow Electronics MAX1708 - Manual (Page 3)

MAX1708
High-Frequency, High-Power, Low-Noise,
Step-Up DC-DC Converter
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ELECTRICAL CHARACTERISTICS (continued)
(V OUT = V CLK = +3.6V, ONA = ONB = FB = GND, T A = 0°C to +85°C, unless otherwise noted. Typical values are at T A = +25°C.)
ELECTRICAL CHARACTERISTICS
(V
OUT
= V
CLK
= +3.6V, ONA = ONB = FB = GND, T
A
= -40°C to +85°C, unless otherwise noted.) (Note 9)
PARAMETER CONDITIONS MIN TYP MAX UNITS
ONA, ONB, 3.3/5, 1.2V < V
OUT <5.5V 0.8 ✕ V OUT
Input High Level
CLK, 2.7 V< V OUT < 5.5V 0.8 ✕ V OUT
V
Logic Input Current ONA, ONB, CLK, 3.3/5 = 0, 5.5V -1 1 µA
Internal Oscillator Frequency 520 600 680 kHz
Maximum Duty Cycle 82 88 94 %
External Clock Frequency
Range
350 1000 kHz
CLK Pulse Width (Note 8) 100 ns
CLK Rise/Fall Time (Note 8) 50 ns
PARAMETER CONDITIONS MIN MAX UNITS
3.3/5 = GND, I
SW = 0.5A 3.24 3.45
Output Voltage
V FB < 0.1V, V IN = +2.4V
(Note 1) 3.3/5 = OUT, I
SW = 0.5A 4.90 5.22
V
FB Regulation Voltage I SW = 0.5A 1.20 1.28 V
FB Input Current (V FB ) V FB = +1.5V 200 nA
Load Regulation Measured between 0.5A < I SW < 1.5A (Note 2) -0.60 %/A
Soft-Start Pin Current SS/LIM = 1V 3.2 5.2 µA
OUT Leakage Current in
Shutdown
V ONB = 3.6V 2 µA
OUT Supply Current V FB = 1.5V (Note 6) 300 µA
N-Channel Switch
On-Resistance
80 m Ω
SS/LIM = open 4.5 7.5
N-Channel Current Limit
SS/LIM = 150k Ω to GND 1.8 4.0
A
Reference Voltage I REF = 0 1.24 1.28 V