MAX8566(2005) Просмотр технического описания (PDF) - Maxim Integrated

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MAX8566
(Rev.:2005)

High-Efficiency, 10A, PWM Internal-Switch Step-Down Regulator

Maxim Integrated 

High-Efficiency, 10A, PWM

Internal-Switch Step-Down Regulator

ABSOLUTE MAXIMUM RATINGS

EN/SS, EN, IN, SYNC, SKIP, VDD,

LSS, PWRGD to GND ..........-0.3V to +4V (4.5V nonswitching)

SYNCOUT, SS, COMP, FB, REFIN,

FREQ to GND .........................................-0.3V to (VDD + 0.3V)

LX Current (Note 1) .................................................-12A to +12A

BST to LX .................................-0.3V to +4V (4.5V nonswitching)

PGND to GND .......................................................-0.3V to +0.3V

Continuous Power Dissipation (TA = +85°C)

32-Pin Thin QFN (derate 33.3mW/°C above +70°C) .....2666.7W

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

Note 1: LX has internal clamp diodes to PGND and IN. Applications that forward bias these diodes should take care not to exceed

the IC’s package power-dissipation limits.

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

(VIN = VDD = VEN = 3.3V, VFB = 0.5V, VSYNC = 0V, TA = 0°C to +85°C, typical values are at TA = +25°C, unless otherwise noted.)

PARAMETER

IN/VDD

IN and VDD Voltage Range

LSS Voltage Range

IN Supply Current

VDD Supply Current

Total Shutdown Current into IN

and VDD

VDD Undervoltage-Lockout

Threshold

BST

Shutdown Supply Current

PWM COMPARATOR

Comparator Propagation Delay

COMP

Clamp Voltage, High

Slew Rate

Shutdown Resistance

ERROR AMPLIFIER

FB Regulation Voltage

Error-Amplifier Common-Mode

Input Range

CONDITIONS

Quiescent current, VFB = 0.7V

fS = 1MHz, no load

Quiescent current, VFB = 0.7V

fS = 1MHz, VLSS = VDD

VIN = VDD = VLSS = (VBST - VLX) = TA = +25°C

3.6V, VEN = 0V

TA = 0°C to +85°C

LX starts/stops switching, 2µs

deglitch

VDD rising

VDD falling

VIN = VDD = VBST = 3.6V, VLX =

3.6V or 0V, VEN = 0V

TA = +25°C

TA = 0°C to +85°C

10mV overdrive

VIN = 2.3V to 3.6V, VFB = 0.7V

From COMP to GND, VEN = 0V

VCOMP = 1V to 2V, VDD = 2.5V and 3.3V

VDD = 2.3V to 2.6V

VDD = 2.6V to 3.6V

MIN TYP MAX UNITS

2.3

3.6

V

2.3

3.6

V

0.7

2.2

mA

14

1.8

4

mA

16

50

µA

3

2.0

2.2

V

1.72 1.90

10

µA

0.05

20

ns

1.80

2.0

2.15

V

0.75

1.4

V/µs

30

100

Ω

0.594 0.6 0.606

V

0

VDD -

1.65

V

0

VDD -

1.7

Error-Amplifier Maximum Output

Current

0.8

mA

2 _______________________________________________________________________________________

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