MAX8523EEE datasheet(2/10 Pages) MAXIM

2 / 10 page

High-Speed, Dual-Phase Gate Driver for

Multiphase, Step-Down Converters

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

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.

BST_ to PGND_ ......................................................-0.3V to +26V

LX_ to PGND_............................................................-1V to +14V

DH_ to PGND_..........................................-0.3V to (BST_ + 0.3V)

DH_ to LX_................................................................-0.3V to +7V

BST_ to LX_ ..............................................................-0.3V to +7V

DL_ to PGND_.............................................-0.3V to (PV_ + 0.3V)

PV_ to PGND_ ..........................................................-0.3V to +7V

PGND2 to PGND1 .................................................-0.3V to +0.3V

VCC to PGND1..........................................................-0.3V to +7V

DLY to PGND1............................................-0.3V to (VCC + 0.3V)

PWM_ to PGND1 ........................................-0.3V to (PV2 + 0.3V)

VCC to PV1_..............................................................-7V to +0.3V

DH_, DL_ Continuous Current .......................................±200mA

Continuous Power Dissipation (TA = +70°C)

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

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

ELECTRICAL CHARACTERISTICS

(VVCC = VPV1 = VPV2 = VBST1 = VBST2 = VDLY = 5V, VPGND1 = VPGND2 = VLX1 = VLX2 = 0V; TA = 0°C to +85°C, unless otherwise

noted. Typical values are at TA = +25°C.)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

UNDERVOLTAGE PROTECTION

Supply Voltage Range

4.5

6.5

VCC rising

3.25

3.5

3.8

UVLO

VCC falling

3.0

3.5

DLY = VCC

100

µA

IVCC

Dynamic, RDLY = 50k

Ω

0.5

PWM_ = GND

µA

IPV_

PWM_ = VCC

1.2

PWM_ = GND

0.1

µA

IBST_

PWM_ = VCC

1.2

IBST1 + IPV1 + IBST2 + IPV2

250kHz

DRIVER SPECIFICATIONS

PWM_ = PGND1, VBST = 4.5V

0.65

1.2

DH_ Driver Resistance

PWM_ = VCC, VBST_ = 4.5V

0.8

1.35

Ω

PWM_ = PGND1, VPV_ = 4.5V

0.95

1.6

DL_ Driver Resistance

PWM_ = VCC, VPV = 4.5V

0.5

0.9

Ω

DH_ Rise Time

PWM_ = VCC, VBST = 5V, 3nF load

DH_ Fall Time

PWM_ = PGND1, VBST = 5V, 3nF load

9.5

DL_ Rise Time

PWM_ = VCC, VPV = 5V, 3nF load

8.5

DL_ Fall Time

PWM_ = PGND1, VPV = 5V, 3nF load

6.5

DH_ Propagation Delay

PWM_falling, VBST = 5V

DL_ Propagation Delay

PWM_rising, VBST = 5V

PWM_ INPUT

Input Current

VPWM_ = 0V or 6.5V

0.01

µA

Input Voltage High

2.5

Input Voltage Low

0.8

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