IC PWR SUPPLY DDR 28-TQFN

MAX8632ETI+T

Manufacturer Part NumberMAX8632ETI+T
DescriptionIC PWR SUPPLY DDR 28-TQFN
ManufacturerMaxim Integrated Products
MAX8632ETI+T datasheet
 


Specifications of MAX8632ETI+T

ApplicationsController, DDRVoltage - Input2 ~ 28 V
Number Of Outputs1Voltage - Output1.8V, 2.5V, 0.7 ~ 5.5 V
Operating Temperature-40°C ~ 85°CMounting TypeSurface Mount
Package / Case28-TQFN Exposed PadOutput Voltage1.8 V, 2.5 V, 0.7 V to 5.5 V
Output Current15 AInput Voltage2 V to 28 V
Mounting StyleSMD/SMTMaximum Operating Temperature+ 85 C
Minimum Operating Temperature- 40 CLead Free Status / RoHS StatusLead free / RoHS Compliant
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Integrated DDR Power-Supply Solution for
Desktops, Notebooks, and Graphic Cards
ABSOLUTE MAXIMUM RATINGS
V
to GND .............................................................-0.3V to +30V
IN
V
AV
, VTTI to GND .........................................-0.3V to +6V
DD,
DD
SHDN, REFIN to GND ..............................................-0.3V to +6V
SS, POK1, POK2, SKIP, ILIM, FB to GND ................-0.3V to +6V
STBY, TON, REF, UVP/OVP to GND ........-0.3V to (AV
OUT, VTTR to GND ..................................-0.3V to (AV
DL to PGND1..............................................-0.3V to (V
DH to LX ....................................................-0.3V to (V
LX to BST..................................................................-6V to +0.3V
LX to GND .................................................................-2V to +30V
VTT to GND...............................................-0.3V to (V
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.
ELECTRICAL CHARACTERISTICS
= STBY = V
(V
= +15V, V
= AV
= V
SHDN
IN
DD
DD
= GND, PGND1 = PGND2 = LX = GND, TON = OPEN, V
are at T
= +25°C.) (Note 1)
A
PARAMETER
SYMBOL
MAIN PWM CONTROLLER
Input Voltage Range
V
DD
Output Adjust Range
V
Output Voltage Accuracy
(Note 2)
Soft-Start Ramp Time
On-Time
Minimum Off-Time
t
OFF_MIN
V
Quiescent Supply Current
IN
V
Shutdown Supply Current
IN
AV
Quiescent Supply Current
I
DD
AVDD
AV
+ V
Shutdown Supply
DD
DD
Current
AV
Undervoltage-Lockout
DD
Threshold
V
Quiescent Supply Current
I
DD
2
_______________________________________________________________________________________
VTTS to GND............................................-0.3V to (AV
PGND1, PGND2, TP0 to GND ...............................-0.3V to +0.3V
REF Short Circuit to GND ...........................................Continuous
Continuous Power Dissipation (T
+ 0.3V)
28-Pin 5mm x 5mm Thin QFN (derate 35.7mW/°C
DD
+ 0.3V)
above +70°C).................................................................2.86W
DD
+ 0.3V)
Operating Temperature Range ...........................-40°C to +85°C
DD
+ 0.3V)
Junction Temperature ......................................................+150°C
BST
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
+ 0.3V)
VTTI
= V
= 5V, V
= V
BST
ILIM
OUT
REFIN
= V
, T
= -40°C to +85°C, unless otherwise noted. Typical values
VTTS
VTT
A
CONDITIONS
V
IN
, AV
DD
OUT
FB = OUT
FB = GND
FB = V
DD
Rising edge of SHDN to full current limit
t
SS
TON = GND (600kHz)
V
= 15V,
IN
TON = REF (450kHz)
V
= 1.5V
t
ON
OUT
TON = open (300kHz)
(Note 3)
TON = AV
DD
(Note 3)
I
IN
SHDN = GND
All on (PWM, VTT, and VTTR on)
STBY = GND (only VTTR and PWM on)
SHDN = GND
Rising edge of V
IN
Hysteresis
Set V
= 0.8V
VDD
FB
DD
= +70°C)
A
= 2.5V, UVP/OVP = TP0 = FB = SKIP
= V
VTTI
MIN
TYP
MAX
2
28
4.5
5.5
0.7
5.5
0.693
0.7
0.707
2.47
2.5
2.53
1.78
1.8
1.82
1.7
170
194
219
213
243
273
316
352
389
(200kHz)
461
516
571
200
300
450
25
40
1
5
2.5
5
1
2
20
4.05
4.25
4.40
50
1
5
+ 0.3V)
UNITS
V
V
V
ms
ns
ns
µA
µA
mA
µA
V
mV
µA