Rainbow-electronics MAX17480 Manual do Utilizador Página 2
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MAX17480
AMD 2-/3-Output Mobile Serial
VID Controller
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
(Note 1)
ELECTRICAL CHARACTERISTICS
(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.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
V
DD,
V
IN3,
V
CC
, V
DDIO
to AGND ..............................-0.3V to +6V
PWRGD to AGND .....................................................-0.3V to +6V
SHDN to AGND ........................................................-0.3V to +6V
GNDS1, GNDS2, THRM, VRHOT to AGND..............-0.3V to +6V
CSP_, CSN_, ILIM12 to AGND .................................-0.3V to +6V
SVC, SVD, PGD_IN to AGND ...................................-0.3V to +6V
FBDC_, FBAC_, OUT3 to AGND ..............................-0.3V to +6V
OSC, TIME, OPTION, ILIM3 to AGND........-0.3V to (V
CC
+ 0.3V)
BST1, BST2 to AGND .............................................-0.3V to +36V
BST1, BST2 to V
DD
.................................................-0.3V to +30V
BST3 to AGND...................................(V
DD
- 0.3V) to (V
LX3
+ 6V)
LX1 to BST1..............................................................-6V to +0.3V
LX3 RMS Current (Note 2) .....................................................±4A
LX2 to BST2..............................................................-6V to +0.3V
LX3 to PGND (Note 2) ..............................................-0.6V to +6V
DH1 to LX1 ..............................................-0.3V to (V
BST1
+ 0.3V)
DH2 to LX2 ..............................................-0.3V to (V
BST2
+ 0.3V)
DL1 to PGND..............................................-0.3V to (V
DD
+ 0.3V)
DL2 to PGND..............................................-0.3V to (V
DD
+ 0.3V)
Continuous Power Dissipation (T
A
= +70°C)
40-Pin TQFN (derate 22.2mW/°C above +70°C) .......1778mW
Operating Temperature Range .........................-40°C to +105°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
INPUT SUPPLIES
V
IN
Drain of external high-side MOSFET 4 26
V
BIAS
V
CC
, V
DD
4.5 5.5
V
IN3
2.7 5.5
Input Voltage Range
V
DDIO
1.0 2.7
V
V
CC
Undervoltage-Lockout
Threshold
V
UVLO
V
CC
rising, 50mV typical hysteresis,
latched, UV fault
4.10 4.25 4.45 V
V
CC
Power-On Reset Threshold
Falling edge, typical hysteresis = 1.1V,
faults cleared and DL_ forced high when
V
CC
falls below this level
1.8 V
V
DDIO
Undervoltage-Lockout
Threshold
V
DDIO
rising, 100mV typical hysteresis,
latched, UV fault
0.7 0.8 0.9 V
V
IN3
Undervoltage-Lockout
Threshold
V
IN3
rising, 100mV typical hysteresis 2.5 2.6 2.7 V
Quiescent Supply Current (V
CC
) I
CC
Skip mode, FBDC_ and OUT3 forced
above their regulation points
5 10 mA
Quiescent Supply Currents (V
DD
) I
DD
Skip mode, FBDC_ and OUT3 forced
above their regulation points, T
A
= +25°C
0.01 1 µA
Quiescent Supply Current (V
DDIO
) I
DDIO
10 25 µA
Quiescent Supply Current (IN3) I
IN3
Skip mode, OUT3 forced above its
regulation point
50 200 µA
Shutdown Supply Current (V
CC
) SHDN = GND, T
A
= +25°C 0.01 1 µA
Note 1: Absolute Maximum Ratings measured with 20MHz scope bandwidth.
Note 2: LX3 has clamp diodes to PGND and IN3. If continuous current is applied through these diodes, thermal limits must be observed.
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