MAX17480
AMD 2-/3-Output Mobile Serial
VID Controller
_______________________________________________________________________________________ 3
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Shutdown Supply Currents (V
DD
) SHDN = GND, T
A
= +25°C 0.01 1 µA
Shutdown Supply Current (V
DDIO
) SHDN = GND, T
A
= +25°C 0.01 1 µA
Shutdown Supply Current (IN3) SHDN = GND, T
A
= +25°C 0.01 1 µA
INTERNAL DACs, SLEW RATE, PHASE SHIFT
DAC codes from
0.8375V to 1.5500V
-0.5 +0.5 %
DAC codes from
0.5000V to 0.8250V
-5 +5
DC Output Voltage Accuracy
(Note 1)
V
OUT
Measured at FBDC_
for the core SMPSs;
measured at OUT3
for the NB SMPS;
30% duty cycle, no
load, ILIM3 = V
CC
,
V
OUT3
= V
DAC3
+
12.5mV (Note 3)
DAC codes from
12.5mV to 0.4875V
-10 +10
mV
OUT3 Offset 12.5 mV
50 %
SMPS1 to SMPS2 Phase Shift SMPS2 starts after SMPS1
180 Degrees
SMPS3 to SMPS1 and SMPS2
Phase Shift
SMPS3 starts after SMPS1 or SMPS2 25 %
R
TIME
= 143k, SR = 6.25mV/µs -10 +10
During
transition
R
TIME
= 35.7k to 357k,
SR = 25mV/µs to 2.5mV/µs
-15 +15
%
Slew-Rate Accuracy
Startup 1 mV/µs
FBAC_ Input Bias Current I
FBAC
_CSP_ = CSN_, T
A
= +25°C -3 +3 µA
FBDC_ Input Bias Current I
FBDC
_T
A
= +25°C -250 +250 nA
R
OSC
= 143k (f
OSC1
= f
OSC2
= 300kHz
nominal, f
OSC3
= 600kHz nominal)
-7 +7
Switching Frequency Accuracy
f
OSC1,
f
OSC2,
f
OSC3
R
OSC
= 71.4k (f
OSC1
= f
OSC2
= 600kHz
nominal, f
OSC3
= 1.2MHz nominal) to
432k (f
OSC1
= f
OSC2
= 99kHz nominal,
f
OSC3
= 199kHz nominal)
-9 +9
%
SMPS1 AND SMPS2 CONTROLLERS
DC Load Regulation
Either SMPS, PWM mode, droop disabled;
zero to full load
-0.1 %
Line Regulation Error Either SMPS, 4V < V
IN
< 26V 0.03 %/V
GNDS_ Input Range V
GNDS_
Separate mode -200 +200 mV
GNDS_ Gain A
GNDS_
Separate: V
OUT
_/V
GNDS
_
,
-200mV V
GNDS
_
+200mV; combined: V
OUT
/V
GNDS_,
-200mV V
GNDS_
+200mV
0.95 1.00 1.05 V/V
GNDS_ Input Bia s Current I
GNDS
_T
A
= +25°C -2 +2 µA
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 2, V
IN
= 12V, V
CC
= V
DD
= V
IN3
= SHDN = PGD_IN = 5V, V
DDIO
= 1.8V, OPTION = GNDS_ = AGND = PGND,
FBDC_ = FBAC_ = OUT3 = CSP_ = CSN_ = 1.2V, all DAC codes set to the 1.2V code, T
A
= 0°C to +85°C, unless otherwise noted.
Typical values are at T
A
= +25°C.)
(13 paginas)
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