MAX1760(2001) データシートの表示（PDF） - Maxim Integrated

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MAX1760
(Rev.:2001)

0.8A, Low-Noise, 1MHz, Step-Up DC-DC Converter

Maxim Integrated 

0.8A, Low-Noise, 1MHz,

Step-Up DC-DC Converter

ABSOLUTE MAXIMUM RATINGS

ON, OUT, CLK/SEL to GND .....................................-0.3V to +6V

PGND to GND.....................................................................±0.3V

LX to PGND ............................................-0.3V to (VPOUT + 0.3V)

POUT to OUT ......................................................................±0.3V

REF, FB, ISET, POUT to GND...................-0.3V to (VOUT + 0.3V)

Continuous Power Dissipation (TA = +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

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.

ELECTRICAL CHARACTERISTICS

(CLK/SEL = ON = FB = PGND = GND, ISET = REF, OUT = POUT, VOUT = 3.6V, TA = 0°C to +85°C. Typical values are at TA =

+25°C, unless otherwise noted.)

PARAMETER

DC-DC CONVERTER

Input Voltage Range (Note 1)

Minimum Startup Voltage (Note 2)

Temperature Coefficient of Startup Voltage

Frequency in Startup Mode

Internal Oscillator Frequency

Oscillator Maximum Duty Cycle (Note 3)

External Clock Frequency Range

CONDITIONS

ILOAD < 1mA, TA = +25°C

ILOAD < 1mA

VOUT = 1.5V

CLK/SEL = OUT

MIN TYP MAX UNITS

0.7

5.5

V

0.9

1.1

V

-2.3

mV/°C

125

500 1000 kHz

0.8

1

1.2 MHz

80

86

90

%

0.5

1.2 MHz

Output Voltage

VFB < 0.1V, CLK/SEL = OUT, includes load

regulation for 0 < ILX < 0.55A

3.17

3.3

3.38

V

FB Regulation Voltage

Adjustable output, CLK/SEL = OUT, includes

load regulation for 0 < ILX < 0.55A

1.215 1.240 1.270

V

FB Input Leakage Current

VFB = 1.35V

0.01 100

nA

Load Regulation

CLK/SEL = OUT, no load to full load

(0 < ILX < 1.0A)

-1.5

%

Output Voltage Adjust Range

2.5

5.5

V

Output Voltage Lockout Threshold (Note 4)

ISET Input Leakage Current

Supply Current in Shutdown

No-Load Supply Current (Note 5)

No-Load Supply Current Forced PWM Mode

Rising edge

VISET = 1.25V

V ON = 3.6V

CLK/SEL = GND

CLK/SEL = OUT

2.00 2.15 2.30

V

±0.01 ±50

nA

0.1

5

µA

100 185

µA

2.5

mA

DC-DC SWITCHES

POUT Leakage Current

LX Leakage Current

Switch On-Resistance

VLX = 0, VOUT = 5.5V

VLX = V ON = VOUT = 5.5V

N-channel

P-channel

0.1

10

µA

0.1

10

µA

0.15 0.28

Ω

0.25 0.45

N-Channel Current Limit

P-Channel Turn-Off Current

CLK/SEL = GND

1.0 1.25 1.6

A

20

60

120

mA

2 _______________________________________________________________________________________

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