MAX1830EEE datasheet(2/13 Pages) MAXIM

2 / 13 page

3A, 1MHz, Low-Voltage, Step-Down Regulators with

Synchronous Rectification and Internal Switches

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VIN = VCC = +3.3V, FBSEL = GND, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°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.

VCC, IN, SHDN to GND ............................................-0.3V to +6V

IN to VCC.............................................................................±0.3V

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

COMP, FB, TOFF, FBSEL, REF to GND .....-0.3V to (VCC + 0.3V)

LX Current (Note 1) ...............................................................5.1A

REF Short Circuit to GND Duration ............................Continuous

ESD Protection .....................................................................±2kV

Continuous Power Dissipation (TA = +70°C)

16-Pin QSOP (derate 14mW/°C above +70°C;

part mounted on 1in2 of 1oz copper) .............................1.12W

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

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

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

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

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Input Voltage

VIN, VCC

3.0

5.5

FBSEL = VCC

2.487

2.525

2.563

FBSEL =

unconnected

1.492

1.515

1.538

FBSEL = REF

(MAX1830)

1.791

1.818

1.845

VIN = +3V to +5.5V,

ILOAD = 0 to 3A,

VFB = VOUT

FBSEL = GND

1.084

1.100

1.117

Preset Output Voltage

VOUT

VIN = +3.7V to +5.5V,

ILOAD = 0 to 3A,

VFB = VOUT

FBSEL = REF

(MAX1831)

3.283

3.333

3.383

Adjustable Output Voltage Range

VCC = VIN = +3V to +5.5V, ILOAD = 0,

FBSEL = GND

VREF

VIN

AC Load Regulation Error

DC Load Regulation Error

0.4

Dropout Voltage

VDO

VCC = VIN = +3V, ILOAD = 3A

150

330

Reference Voltage

VREF

1.089

1.100

1.111

Reference Load Regulation

∆VREF

IREF = -1µA to +10µA

0.5

Current-Limit Threshold

ILIMIT

4.0

4.8

5.4

Maximum Output RMS Current

IOUT(RMS) (Note 4)

3.4

Idle Mode Current Threshold

IIM

0.2

0.6

1.0

VIN = 4.5V

PMOS Switch On-Resistance

RON, P

ILX = 0.5A

VIN = 3V

110

VIN = 4.5V

NMOS Switch On-Resistance

RON, N

ILX = 0.5A

VIN = 3V

100

Ω

Switching Frequency

(Note 2)

MHz

No-Load Supply Current

IIN + ICC

VFB = 1.2V

325

750

µA

Note 1: LX has internal clamp diodes to PGND and IN. Applications that forward bias the diode should take care not to exceed the IC’s

package power dissipation.

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