MAX8664 datasheet(2/26 Pages) MAXIM

2 / 26 page

Low-Cost, Dual-Output, Step-Down

Controller with Fast Transient Response

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ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VIN = 12V, ROSC/EN12 to GND = 56.1kΩ, REFIN2 = VCC, TA = -40°C to +85°C, unless otherwise noted. Typical values are at

TA = +25°C.) (Note 2)

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.

IN to GND ...........................................................…-0.3V to +30V

VL to GND...................................................................-0.3 to +8V

IN, BST_ to VL ........................................................-0.3V to +30V

VCC, FB_, PWRGD to GND.......................................-0.3V to +6V

VL to VCC ....................................................................-2V to +8V

PGND to GND .......................................................-0.3V to +0.6V

DL_ to PGND...............................................-0.3V to (VVL + 0.3V)

DH_ to PGND............................................-0.3V to (VBST_+ 0.3V)

BST_ to GND.............................................................-0.3V to 38V

BST_ to LX ................................................................-0.3V to +8V

LX_ to PGND .................-1V (-2.5V for < 50ns transient) to +30V

DH_ to LX_................................................-0.3V to (VBST_+ 0.3V)

ILIM_ to GND ...............................................-0.3V to (VIN + 0.3V)

ILIM_ to LX_............................................................-0.6V to +30V

OSC/EN12, REFIN2 to GND .....................-0.3V to (VVCC + 0.3V)

VL Continuous Current ..............................................125mARMS

VCC Continuous Current..............................................10mARMS

Continuous Power Dissipation (TA = +70°C) (Note 1)

20-Pin QSOP (derate 11.0mW/°C above +70°C).........884mW

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

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

SUPPLY VOLTAGES

7.2

28.0

IN Supply Voltage

IN = VL = VCC

4.5

5.5

VL Output Voltage

7.2V < VIN < 28V, 0 < IVL < 60mA

6.10

6.6

6.75

VCC Output Voltage

7.2V < VIN < 28V, 0 < ICC < 5mA

4.5

5.0

5.5

Rising

3.4

3.5

3.6

VCC Undervoltage Lockout

(UVLO)

Hysteresis

350

VIN = 12V, IIN

0.095

0.2

Standby Supply Current

OSC/EN12 not

connected

VCC = VIN = VVL = 5V, IIN + IVL + IVCC

0.08

0.2

VIN = 12V, IIN

1.4

2.5

Operating Supply Current

No switching,

VFB_ = 0.65V

VCC = VIN = VVL = 5V, IIN + IVL+ IVCC

1.1

1.8

REGULATOR SPECIFICATIONS

TA = 0°C to +85°C

0.5955

0.600

0.6045

Reference Accuracy

TA = -40°C to +85°C

0.5930

0.600

0.6070

TA = 0°C to +85°C

0.5952

0.600

0.6048

VREFIN2 = VVCC

TA = -40°C to +85°C

0.5925

0.600

0.6075

FB_ Regulation Accuracy

VREFIN2 = 1.000V

0.995

1.000

1.005

REFIN2 to Internal Reference

Switchover Threshold

Not to be switched during operation

VVCC -

0.7

VVCC -

0.3

REFIN2 Maximum Program Voltage

1.3

REFIN2 Disable Threshold

FB Input Bias Current

VFB = 0.5V

REFIN2 Bias Current

VREFIN2 = 0.65V

FB Propagation Delay

FB rising to DH falling

Note 1: Package mounted on a multilayer PCB.

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