Rainbow Electronics MAX1760 - Manual (Page 2)

MAX1760
0.8A, Low-Noise, 1MHz,
Step-Up DC-DC Converter
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(CLK/SEL = ON = FB = PGND = GND, ISET = REF, OUT = POUT, V OUT = 3.6V, T A = 0°C to +85°C. Typical values are at T A =
+25°C, unless otherwise noted.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ON, OUT, CLK/SEL to GND .....................................-0.3V to +6V
PGND to GND.....................................................................±0.3V
LX to PGND ............................................-0.3V to (V
POUT + 0.3V)
POUT to OUT ......................................................................±0.3V
REF, FB, ISET, POUT to GND...................-0.3V to (V
OUT + 0.3V)
Continuous Power Dissipation (T A = +70°C)
10-Pin µMAX (derate 5.6mW/°C above +70°C) ...........444mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER CONDITIONS MIN TYP MAX UNITS
DC-DC CONVERTER
Input Voltage Range (Note 1) 0.7 5.5 V
Minimum Startup Voltage (Note 2) I LOAD < 1mA, T A = +25 °C 0.9 1.1 V
Temperature Coefficient of Startup Voltage I LOAD < 1mA -2.3 mV/ °C
Frequency in Startup Mode V OUT = 1.5V 125 500 1000 kHz
Internal Oscillator Frequency CLK/SEL = OUT 0.8 1 1.2 MHz
Oscillator Maximum Duty Cycle (Note 3) 80 86 90 %
External Clock Frequency Range 0.5 1.2 MHz
Output Voltage
V FB < 0.1V, CLK/SEL = OUT, includes load
regulation for 0 < I
LX
< 0.55A
3.17 3.3 3.38 V
FB Regulation Voltage
Adjustable output, CLK/SEL = OUT, includes
load regulation for 0 < I
LX < 0.55A
1.215 1.240 1.270 V
FB Input Leakage Current V FB = 1.35V 0.01 100 nA
Load Regulation
CLK/SEL = OUT, no load to full load
(0 < I
LX < 1.0A)
-1.5 %
Output Voltage Adjust Range 2.5 5.5 V
Output Voltage Lockout Threshold (Note 4) Rising edge 2.00 2.15 2.30 V
ISET Input Leakage Current V ISET = 1.25V ±0.01 ±50 nA
Supply Current in Shutdown V ON = 3.6V 0.1 5 µA
No-Load Supply Current (Note 5) CLK/SEL = GND 100 185 µA
No-Load Supply Current Forced PWM Mode CLK/SEL = OUT 2.5 mA
DC-DC SWITCHES
POUT Leakage Current V LX = 0, V OUT = 5.5V 0.1 10 µA
LX Leakage Current V LX = V ON = V OUT = 5.5V 0.1 10 µA
N-channel 0.15 0.28
Switch On-Resistance
P-channel 0.25 0.45
Ω
N-Channel Current Limit 1.0 1.25 1.6 A
P-Channel Turn-Off Current CLK/SEL = GND 20 60 120 mA