MAX17480GTL 데이터 시트보기 (PDF) - Maxim Integrated
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MAX17480GTL Datasheet PDF : 48 Pages
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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 = -40°C to +105°C, unless otherwise
noted. Typical values are at TA = +25°C.) (Note 5)
PARAMETER
SYMBOL
SMPS1 AND SMPS2 CONTROLLERS
GNDS_ Input Range
VGNDS_
GNDS_ Gain
AGNDS_
CONDITIONS
Separate mode
Separate: VOUT_/VGNDS_, -200mV
VGNDS_ +200mV; combined;
VOUT/ VGNDS_, -200mV VGNDS_ +200mV
MIN
-200
0.95
TYP MAX UNITS
+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_ = 0 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
10mV hysteresis (typ)
-33
mV
SMPS3 INTERNAL 4A 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
4.75
84
7
mV/A
150
m
75
6
A
%
150
ns
8 _______________________________________________________________________________________
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