MAX1765(2000) 데이터 시트보기 (PDF) - Maxim Integrated

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MAX1765
(Rev.:2000)

800mA, Low-Noise, Step-Up DC-DC Converter with 500mA Linear Regulator

Maxim Integrated 

800mA, Low-Noise, Step-Up DC-DC Converter

with 500mA Linear Regulator

ABSOLUTE MAXIMUM RATINGS

ONA, ONB, ONL, TRACK, OUT, INL to GND..............-0.3V, +6V

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

LX to GND ...............................................-0.3V to (POUT + 0.3V)

OUTL to GND ..............................................-0.3V to (INL + 0.3V)

CLK/SEL, REF, FB, FBL, ISET, POUT

to GND...................................................-0.3V to (OUT + 0.3V)

OUTL Short Circuit .....................................................Continuous

Continuous Power Dissipation (TA = +70°C)

16-Pin QSOP (derate 8.3mW/°C above +70°C)...........667mW

16-Pin TSSOP-EP (derate 19mW/°C above +70°C) ....1500mW

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

(VOUT = VPOUT = VINL = VONA = VONL = 3.6V, CLK/SEL = FBL = ONB = TRACK = PGND = GND, ISET = REF (bypassed with

0.22µF), LX = open, OUTL = open (bypassed with 4.7µF), TA = 0°C to +85°C, unless otherwise noted. Typical values are at

TA = +25°C.)

PARAMETER

DC-DC CONVERTER

Input Voltage Range

INL Voltage Range

Minimum Startup Voltage

Temperature Coefficient of

Startup Voltage

FB Regulation Voltage

FB Input Leakage Current

Output Voltage Adjust Range

Load Regulation

OUT Voltage in Track Mode

Frequency in Startup Mode

Startup to Normal Mode

Transition Voltage

ISET Input Leakage Current

Supply Current in Normal Mode

(Note 3)

SYMBOL

CONDITIONS

(Note 1)

(Note 1)

ILOAD < 1mA, TA = +25°C, Figure 2

ILOAD < 1mA

VFB

CLK/SEL = OUT, 0 < ILX < 0.55A

VFB = 1.35V

CLK/SEL = OUT, 0 < ILOAD < 800mA

VOUTL > 2.0V, INL = POUT

fLX

VOUT = 1.5V

Rising edge only (Note 2)

VISET = 1.25V

CLK/SEL = ONL = GND, no load

MIN TYP MAX UNITS

0.7

5.5

V

2.3

5.5

V

0.9

1.1

V

-2

mV/°C

1.215 1.250 1.275

V

0.01 100

nA

2.5

5.5

V

-1

%

VOUTL VOUTL VOUTL

V

+ 0.4 + 0.5 + 0.6

125

1000 kHz

2.00 2.15 2.30

V

0.01

50

nA

100 200

µA

Supply Current in Low-Noise

PWM Mode (Note 3)

Supply Current in Shutdown

CLK/SEL = OUT,

no load

VFB = 1.5V

FB = GND (LX switching)

ONA = ONL = GND, ONB = OUT

130 200

µA

2.5

mA

1

10

µA

2 _______________________________________________________________________________________

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