MAX8654ETX Ver la hoja de datos (PDF) - Maxim Integrated

Número de pieza

componentes Descripción

Fabricante

MAX8654ETX

12V, 8A 1.2MHz Step-Down Regulator

Maxim Integrated 

12V, 8A 1.2MHz

Step-Down Regulator

ABSOLUTE MAXIMUM RATINGS

SYNC, VL, PWRGD to GND...................................-0.3V to +4.5V

SYNCOUT, COMP, SS, FB,

REFIN, ILIM, FREQ to GND .....................-0.3V to (VVL + 0.3V)

VDL to PGND............................................................-0.3V to +6V

VP, IN, EN to GND..................................................-0.3V to +16V

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

BST to LX .………………………………………………-0.3V to +6V

BST to GND ……………………………………..-0.3V to (VIN + 6V)

EN to VP and IN………………………………-0.3V to (VIN + 0.3V)

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

Continuous Power Dissipation (TA = +70°C)

36-Pin TQFN (derate 35.7mW/°C above +70°C) .........2857.1mW

Operating Temperature Range ...........................-40°C to +85°C

Junction Temperature ......………………………………….+150°C

Storage Temperature Range .............................-65°C to +150°C

Thermal Resistance Junction to Exposed Pad (EP)...........3°C/W

Lead Temperature (soldering, 10s) .................................+300°C

Soldering Temperature (reflow) .......................................+260°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 = VEN = VVP = 12V, VVDL = 5V, VVL = 3.3V, VSYNC = 0V, VFB = 0.5V, TA = -40°C to +85°C, typical values are at TA = +25°C,

unless otherwise noted.)

PARAMETER

IN/VP

IN and VP Voltage Range

VDL Voltage Range

VL Output Voltage

VDL Output Voltage

IN + VP Supply Current

VL Supply Current

VDL Supply Current

IN + VP Shutdown Current

VL Undervoltage Lockout

Threshold

VDL and IN Undervoltage

Lockout Threshold

BST

BST Shutdown Supply Current

PWM COMPARATOR

CONDITIONS

VP = VDL

IVL = 5mA

IVDL = 50mA

Not switching, no load

fS = 500kHz, no load,

L = 1.5µH

VIN = 12V

VIN = 4.5V

fS = 500kHz, VVL = 3.8V from separate supply

fS = 500kHz, VVDL = 5.5V from separate supply

VP = VIN = 13.2V, VEN = VVDL = VVL = unconnected

LX starts/stops switching,

VVL rising

2µs rising/falling edge deglitch

VVL falling

LX starts/stops switching,

VIN rising

3µs rising/falling edge deglitch

VIN falling

VEN = 0V, VIN = VVP = VBST = VVDL = 5V

MIN TYP MAX UNITS

4.5

14

V

4.5

5.5

V

3.3

V

5

V

2.7

45

mA

28

1.6

mA

25

mA

10

20

µA

3

3.1

V

2.8

2.9

4.4

V

3.8

10

µA

PWM Comparator Propagation

Delay

COMP

COMP Clamp Voltage, High

COMP Slew Rate

COMP Shutdown Resistance

5mV overdrive

From COMP to GND, VEN = 0V

16

ns

1.8

V

7

V/µs

7

Ω

2 _______________________________________________________________________________________

Share Link: