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MAX17480GTL

AMD 2-/3-Output Mobile Serial VID Controller

Maxim Integrated 

AMD 2-/3-Output Mobile Serial

VID Controller

ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 2, VIN = 12V, VCC = VDD = VIN3 = SHDN = PGD_IN = 5V, VDDIO = 1.8V, OPTION = GNDS_ = AGND = PGND,

FBDC_ = FBAC_ = OUT3 = CSP_ = CSN_ = 1.2V, all DAC codes set to the 1.2V code, TA = 0°C to +85°C, unless otherwise noted.

Typical values are at TA = +25°C.)

PARAMETER

SYMBOL

CONDITIONS

Combined-Mode Detection

Threshold

Maximum Duty Factor

DMAX

Minimum On-Time

tONMIN

SMPS1 AND SMPS2 CURRENT LIMIT

GNDS1, GNDS2, detection after REFOK,

latched, cleared by cycling SHDN

Current-Limit Threshold

Tolerance

VLIMIT

VCSP_ - VCSN_ = 0.052 x (VREF - VILIM),

(VREF - VILM) = 0.2V to 1.0V

Zero-Crossing Threshold

Idle Mode™ Threshold

VZX

VIMIN

VGND_ - VLX_, skip mode

VCSP_ - VCSN_, skip mode, 0.15 x VLIMIT

CS_ Input Leakage Current

CSP_ and CSN_, TA = +25°C

CS_ Common-Mode Input Range

CSP_ and CSN_

SMPS1 AND SMPS2 DROOP, CURRENT BALANCE, AND TRANSIENT RESPONSE

AC Droop and Current Balance

Amplifier Transconductance

Gm(FBAC_)

IFBAC_/(
VCS_), VFBAC_ = VCSN_ = 1.2V,

VCSP_ - VCSN_ = 0 to +40mV

AC Droop and Current Balance

Amplifier Offset

No-Load Positive Offset

IFBAC_/Gm(FBAC_)

OPTION = 2V or GND

Transient Detection Threshold

Measured at FBDC_ with respect to

steady-state FBDC_ regulation voltage,

10mV hysteresis (typ)

SMPS3 INTERNAL 4A STEP-DOWN CONVERTER

OUT3 Load Regulation

OUT3 Line Regulation

RDROOP3

0 to 100% duty cycle

OUT3 Input Current

LX3 Leakage Current

IOUT3

ILX3

TA = +25°C

SHDN = GND, VLX3 = GND or 5.5V,

VIN3 = 5.5V, TA = +25°C

Internal MOSFET On-Resistance

RON(NH3) High-side n-channel

RON(NL3) Low-side n-channel

LX3 Peak Current Limit

ILX3PK

ILIM3 = VCC

ILIM3 = GND

LX3 Idle-Mode Trip Level

LX3 Zero-Crossing Trip Level

ILX3MIN

IZX3

Percentage of ILX3PK

Skip mode

Maximum Duty Factor

DMAX

Minimum On-Time

tONMIN

MIN TYP MAX UNITS

0.7

0.8

0.9

V

90

92

%

150

ns

-3

+3

mV

1

mV

-2

+2

mV

-0.2

+0.2

µA

0

2

V

1.94 2.00 2.06

mS

-1.5

+1.5

mV

+12.5

mV

-47

-41

-33

mV

4

-100

-20

4.75

3.75

84

5.5

5

-5

75

40

5.25

4.25

25

20

87

7

+100

+20

150

75

6

5

150

mV/A

mV

nA

µA

m

A

%

mA

%

ns

Idle Mode is a trademark of Maxim Integrated Products, Inc.

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