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MAX17080

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 = VSHDN = VPGD_IN = 5V, VDDIO = 1.8V, VOPTION = VGNDS_ = VAGND = VPGND,

VFBDC_ = VFBAC_ = VOUT3 = VCSP_ = VCSN_ = 1.2V, all DAC codes set to the 1.2V code, TA = -40°C to +105°C, unless otherwise

noted. Typical values are at TA = +25°C.) (Note 5)

PARAMETER

SYMBOL

CONDITIONS

Switching Frequency Accuracy

fOSC1,

fOSC2,

fOSC3

ROSC = 143k
(fOSC1 = fOSC2 = 300kHz

nominal, fOSC3 = 600kHz nominal)

ROSC = 71.4k
(fOSC1 = fOSC2 = 600kHz

nominal, fOSC3 = 1.2MHz nominal) to

432k
(fOSC1 = fOSC2 = 99kHz nominal,

fOSC3 = 199kHz nominal)

SMPS1 AND SMPS2 CONTROLLERS

GNDS_ Input Range

VGNDS_ Separate mode

GNDS_ Gain

AGNDS_

Separate:
VOUT_/
VGNDS_, -200mV 

VGNDS_  +200mV; combined;

VOUT/
VGNDS_, -200mV  VGNDS_  +200mV

MIN

-7.5

-10

-200

0.95

TYP

MAX

+7.5

UNITS

%

+10

+200 mV

1.05

V/V

Combined-Mode Detection

Threshold

GNDS1, GNDS2, detection after REFOK,

latched, cleared by cycling SHDN

Maximum Duty Factor

DMAX

Minimum On-Time

tONMIN

SMPS1 AND SMPS2 CURRENT LIMIT

Current-Limit Threshold

Tolerance

VLIMIT

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

(VREF - VILM) = 0.2V to 1.0V

Idle-Mode Threshold Tolerance

VIMIN VCSP_ - VCSN_, skip mode, 0.15 x VLIMIT

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_ = 0mV to +40mV

AC Droop and Current Balance

Amplifier Offset

IFBAC_/Gm(FBAC_)

0.7

90

-3

-2

0

1.94

-1.5

0.9

V

%

150

ns

+3

mV

+2

mV

2

V

2.06

mS

+2.0

mV

Transient Detection Threshold

Measured at FBDC_ with respect to

steady-state FBDC_ regulation voltage,

-47

5mV hysteresis (typ)

-28

mV

SMPS3 INTERNAL 3A STEP-DOWN CONVERTER

OUT3 Load Regulation

RDROOP3

Internal MOSFET On-Resistance

RON(NH3) High-side n-channel

RON(NL3) Low-side n-channel

LX3 Peak Current Limit

ILX3PK ILIM3 = VCC, skip mode

Maximum Duty Factor

DMAX

Minimum On-Time

tONMIN

4.5

8.5

mV/A

200

m

100

3.5

4.5

A

84

%

150

ns

8 _______________________________________________________________________________________

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