MAX17000A datasheet(2/32 Pages) MAXIM

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Complete DDR2 and DDR3 Memory

Power-Management Solution

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VIN = 12V, VCC = VDD = VSHDN = VREFIN = 5V, VCSL = 1.8V, STDBY = SKIP = AGND, TA = 0°C to +85°C, unless otherwise noted.

Typical values are at TA = +25°C.) (Note 1)

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.

TON to PGND1 .......................................................-0.3V to +28V

VDD to PGND1..........................................................-0.3V to +6V

VCC to VDD ............................................................-0.3V to +0.3V

OVP to AGND ...........................................................-0.3V to +6V

SHDN, STDBY, SKIP to AGND .................................-0.3V to +6V

REFIN, FB, PGOOD1,

PGOOD2 to AGND ................................-0.3V to (VCC + 0.3V)

CSH, CSL to AGND ....................................-0.3V to (VCC + 0.3V)

DL to PGND1..............................................-0.3V to (VDD + 0.3V)

BST to PGND1...........................................................-1V to +34V

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

DH to LX ....................................................-0.3V to (VBST + 0.3V)

BST to VDD .............................................................-0.3V to +26V

VTTI to PGND2 .........................................................-0.3V to +6V

VTT to PGND2 ............................................-0.3V to (VTTI + 0.3V)

VTTS to AGND............................................-0.3V to (VCC + 0.3V)

VTTR to AGND ..........................................-0.3V to (VCSL + 0.3V)

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

Continuous Power Dissipation (TA = +70°C)

24-Pin, 4mm x 4mm Thin QFN

(derated 27.8mW/°C above +70°C) ..........................2222mW

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

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

PWM CONTROLLER

VIN

Input Voltage Range

VCC, VDD

4.5

5.5

FB = AGND

1.485

1.500

1.515

FB = VCC

1.782

1.800

1.818

Output-Voltage Accuracy

VCSL

VIN = 4.5V to 26V,

SKIP = VCC

FB = Adj

0.99

1.000

1.01

Output-Voltage Range

VCSL

2.7

Load Regulation Error

VCSH - VCSL = 0 to 18mV,

SKIP = VCC

0.1

Line Regulation Error

VDD = 4.5V to 5.5V, VIN = 4.5V to 26V

0.25

Soft-Start Ramp Time

tSSTART

Rising edge of

SHDN

1.4

2.1

Soft-Stop Ramp Time

tSSTOP

Falling edge of

SHDN

2.8

Soft-Stop Threshold

RTON = 96.75k

(600kHz),

167ns nominal

-15

+15

RTON = 200k

(300kHz),

333ns nominal

-10

+10

On-Time Accuracy (Note 2)

tON

VIN = 12V,

VCSL = 1.2V

RTON = 303.25k

(200kHz), 500ns nominal

-15

+15

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