MAX8550 Maxim Integrated Products, MAX8550 Datasheet - Page 4

• Manufacturer Part Number: MAX8550
• Description: (MAX8550 / MAX8551) Integrated DDR Power-Supply Solutions
• Manufacturer: Maxim Integrated Products

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ELECTRICAL CHARACTERISTICS (continued)
(V
= GND, PGND1 = PGND2 = LX = GND, TON = OPEN, V
are at T
Integrated DDR Power-Supply Solutions for
Desktops, Notebooks, and Graphic Cards
Dual Mode is a trademark of Maxim Integrated Products, Inc.
4
MOSFET DRIVERS
DH Gate-Driver On-Resistance
DL Gate-Driver On-Resistance in
High State
DL Gate-Driver On-Resistance in
Low State
Dead Time (Additional to
Adaptive Delay)
INPUTS AND OUTPUTS
Logic Input Threshold
(SHDN_, STBY, SKIP (Note 4))
Logic Input Current
(SHDN_, STBY, SKIP (Note 4))
Dual-Mode™ Input Logic
Levels (FB)
Input Bias Current (FB)
Four-Level Input Logic Levels
(TON, OVP/UVP (Note 4))
Logic Input Current
(TON, OVP/UVP (Note 4))
OUT Input Resistance
OUT Discharge-Mode
On-Resistance
DL Turn-On Level During
Discharge Mode
(Measured at OUT)
IN
_______________________________________________________________________________________
= +15V, V
A
= +25°C.) (Note 1)
PARAMETER
DD
= AV
DD
= V
SHDNA
SYMBOL
= V
SHDNB
= V
V
DH falling to DL rising
DL falling to DH rising
Rising edge
Hysteresis
Low (2.5V output)
High (1.8V output)
High
Floating
REF
Low
FB = GND
FB = AV
FB adjustable mode
(Note 4)
(Note 4)
BST
BST
- V
= V
VTTS
LX
DD
ILIM
= 5V
= V
= 5V, V
CONDITIONS
VTT
, T
OUT
A
= -40°C to +85°C, unless otherwise noted. Typical values
= V
REFIN
= V
VTTI
= 2.5V, UVP/OVP = STBY = FB = SKIP
AV
MIN
1.20
3.15
1.65
-0.1
400
2.1
0.4
90
70
-1
-3
DD
-
TYP
225
175
135
800
0.5
1.7
0.3
10
30
30
1
1
MAX
1600
+0.1
2.20
0.05
3.85
2.35
350
270
0.5
+1
+3
25
4
4
3
UNITS
mV
kΩ
µA
µA
µA
ns
Ω
Ω
Ω
Ω
V
V
V
V
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