Rainbow Electronics MAX17480 - Manual (Page 10)

MAX17480
AMD 2-/3-Output Mobile Serial
VID Controller
10 ______________________________________________________________________________________
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
= -40°C to +105°C, unless otherwise
noted. Typical values are at T
A
= +25 °C.) (Note 5)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Data Setup Time t SU;DAT 10 ns
SVC Low Period t LOW 160 ns
SVC High Period t HIGH Measured from 10% to 90% of V DDIO 60 ns
SVC/SVD Rise and Fall Time t
R
, t
F
Input filters on SVD and SVC suppress
noise spike less than 50ns
40 ns
INPUTS AND OUTPUTS
Logic-Input Levels SHDN, rising edge, hysteresis = 225mV 0.8 2.0 V
High, OPTION, ILIM3
V
CC
-
0.4
3.3V, OPTION 2.75 3.85
2V, OPTION 1.65 2.35
Input Logic Levels
Low, OPTION, ILIM3 0.4
V
PGD_IN Logic-Input Threshold PGD_IN, rising edge, hysteresis = 65mV
0.3 x
V DDIO
0.7 x
V DDIO
V
Note 3: When the inductor is in continuous conduction, the output voltage has a DC regulation level lower than the error-comparator
threshold by 50% of the ripple. In discontinuous conduction, the output voltage has a DC regulation level higher than the
error-comparator threshold by 50% of the ripple. The core SMPSs have an integrator that corrects for this error. The NB
SMPS has an offset determined by the ILIM3 pin, and a -6.5mV/A load line.
Note 4: Production testing limitations due to package handling require relaxed maximum on-resistance specifications for the TQFN
package.
Note 5: Specifications to T A = -40 °C to +105°C are guaranteed by design, not production tested.
SVC
t HD;STA
t HD;DAT t SU;DAT t SU;STO
t BUF
t LOW
t
HIGH
t R
t F
V IH
V
IL
SVD
Figure 1. Timing Definitions Used in the Electrical Characteristics