MAX1760 Просмотр технического описания (PDF) - Maxim Integrated

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MAX1760

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, 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)

Single-Layer Board:

10-Pin µMAX

(derate 5.6mW/°C above +70°C).................................….444mW

10-Pin TDFN-EP (derate 18.5mW/°C above +70°C) .....1482mW

Multilayer Board:

10-Pin µMAX (derate 8.8mW/°C above +70°C) ..........….707mW

10-Pin TDFN-EP (derate 24.4mW/°C above +70°C) .....1951mW

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 = 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

Minimum Startup Voltage

Temperature Coefficient of Startup Voltage

Frequency in Startup Mode

Internal Oscillator Frequency

Oscillator Maximum Duty Cycle

External Clock Frequency Range

Output Voltage

FB Regulation Voltage

FB Input Leakage Current

CONDITIONS

MIN TYP MAX UNITS

(Note 1)

ILOAD < 1mA, TA = +25°C (Note 2)

ILOAD < 1mA

VOUT = 1.5V

CLK/SEL = OUT

(Note 3)

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

regulation for 0 < ILX < 0.55A

Adjustable output, CLK/SEL = OUT, includes

load regulation for 0 < ILX < 0.55A

VFB = 1.35V (TA = +25°C, MAX1760ETB,

MAX1760HETB)

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

3.17

3.3

3.38

V

1.215 1.240 1.270

V

0.01 100

nA

Load Regulation

Output Voltage Adjust Range

Output Voltage Lockout Threshold

ISET Input Leakage Current

Supply Current in Shutdown

No-Load Supply Current

No-Load Supply Current Forced-PWM Mode

DC-DC SWITCHES

POUT Leakage Current

CLK/SEL = OUT, no load to full load

(0 < ILX < 1.0A)

Rising edge (Note 4)

VISET = 1.25V (TA = +25°C, MAX1760ETB,

MAX1760HETB)

V ON = 3.6V, VON = 0V

CLK/SEL = GND (Note 5)

CLK/SEL = OUT

VLX = 0, VOUT = 5.5V (TA = +25°C,

MAX1760ETB, MAX1760HETB)

-1.5

%

2.5

5.5

V

2.00 2.15 2.30

V

±0.01 ±50

nA

0.1

5

µA

100 185

µA

2.5

mA

0.1

10

µA

LX Leakage Current

VLX = VOUT = 5.5V, in shutdown (TA =

+25°C, MAX1760ETB, MAX1760HETB)

0.1

10

µA

2 _______________________________________________________________________________________

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