Rainbow Electronics MAX17480 - Manual (Page 3)

MAX17480
AMD 2-/3-Output Mobile Serial
VID Controller
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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 Bias 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.)