MAX17480 Maxim Integrated Products, MAX17480 Datasheet - Page 8

• Manufacturer Part Number: MAX17480
• Description: AMD 2-/3-Output Mobile Serial VID Controller
• Manufacturer: Maxim Integrated Products

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AMD 2-/3-Output Mobile Serial
VID Controller
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 2, V
FBDC_ = FBAC_ = OUT3 = CSP_ = CSN_ = 1.2V, all DAC codes set to the 1.2V code, T
noted. Typical values are at T
8
SMPS1 AND SMPS2 CONTROLLERS
GNDS_ Input Range
GNDS_ Gain
Combined-Mode Detection
Threshold
Maximum Duty Factor
Minimum On-Time
SMPS1 AND SMPS2 CURRENT LIMIT
Current-Limit Threshold
Tolerance
Idle-Mode Threshold Tolerance
CS_ Common-Mode Input Range
SMPS1 AND SMPS2 DROOP, CURRENT BALANCE, AND TRANSIENT RESPONSE
AC Droop and Current Balance
Amplifier Transconductance
AC Droop and Current Balance
Amplifier Offset
Transient Detection Threshold
SMPS3 INTERNAL 4A STEP-DOWN CONVERTER
OUT3 Load Regulation
Internal MOSFET On-Resistance
LX3 Peak Current Limit
Maximum Duty Factor
Minimum On-Time
_______________________________________________________________________________________
PARAMETER
IN
= 12V, V
A
= +25°C.) (Note 5)
CC
G
= V
SYMBOL
R
R
R
A
V
t
m(FBAC
t
DROOP3
V
ON(NH3)
I
D
ONMIN
ON(NL3)
D
ONMIN
V
LX3PK
GNDS_
GNDS_
LIMIT
DD
IMIN
MAX
MAX
= V
_
)
IN3
Separate mode
Separate: V
V
GNDS1, GNDS2, detection after REFOK,
latched, cleared by cycling
V
(V
V
CSP_ and CSN_
V
I
Measured at FBDC_ with respect to
steady-state FBDC_ regulation voltage,
10mV hysteresis (typ)
High-side n-channel
Low-side n-channel
ILIM3 = V
FBAC
V
GNDS
CSP
CSP
I
CSP
FBAC
REF
= SHDN = PGD_IN = 5V, V
OUT
_ - V
_ - V
_ - V
_/G
- V
/ V
_ +200mV; combined;
_/( V
ILM
m(FBAC
CSN
CSN
CSN
GNDS_,
CC,
) = 0.2V to 1.0V
CS
OUT
_ = 0.052 x (V
_, skip mode, 0.15 x V
_ = 0 to +40mV
skip mode
_), V
CONDITIONS
_
-200mV V
_/ V
)
FBAC
GNDS
_ = V
_
,
GNDS_
REF
-200mV
CSN
DDIO
- V
_ = 1.2V,
ILIM
+200mV
LIMIT
= 1.8V, OPTION = GNDS_ = AGND = PGND,
),
A
= -40°C to +105°C, unless otherwise
-200
0.95
1.94
4.75
MIN
-1.5
0.7
-47
90
84
-3
-2
0
4
TYP
+200
MAX
+2.0
1.05
2.06
150
150
150
0.9
-33
+3
+2
75
2
7
6
UNITS
mV/A
m
mV
V/V
mV
mV
mS
mV
mV
ns
ns
%
%
V
V
A