MAX8745 Maxim Integrated Products, MAX8745 Datasheet - Page 6

• Manufacturer Part Number: MAX8745
• Description: (MAX8744 / MAX8745) Main Power-Supply Controllers
• Manufacturer: Maxim Integrated Products

ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1, V
no load, T
High-Efficiency, Quad Output, Main Power-
Supply Controllers for Notebook Computers
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6
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V
no load, T
INPUT SUPPLIES (Note 1)
V
V
V
V
Quiescent Power Consumption
MAIN SMPS CONTROLLERS
3.3V Output Voltage in Fixed
Mode
5V Output Voltage in Fixed Mode
Feedback Voltage in Adjustable
Mode
Output Voltage Adjust Range
FB3, FB5 Dual Mode Threshold
Operating Frequency (Note 1)
Maximum Duty Factor
Tri-Level Input Logic
Input Leakage Current
IN
IN
IN
IN
_______________________________________________________________________________________
Input Voltage Range
Operating Supply Current
Standby Supply Current
Shutdown Supply Current
A
A
PARAMETER
PARAMETER
= -40°C to +85°C, unless otherwise noted.) (Note 3)
= 0°C to +85°C, unless otherwise noted. Typical values are at T
IN
IN
= 12V, both SMPS enabled, FSEL = REF, SKIP = GND, ILIM = LDO5, FBA = LDO5, I
= 12V, both SMPS enabled, FSEL = REF, SKIP = GND, ILIM = LDO5, FBA = LDO5, I
SYMBOL
I
I
IN(SHDN)
IN(STBY)
V
SYMBOL
D
V
V
f
OUT3
V
OSC
I
P
OU5
MAX
FB_
IN
IN
Q
LDO5 in regulation
IN = LDO5, V
LDO5 switched over to CSL5, either SMPS on
V
I
V
Both SMPS on, FB3 = FB5 = LDO5; SKP =
GND, V
V
P
V
0 < V
V
0 < V
V
duty factor = 20% to 80% (Note 2)
Either SMPS
FSEL = GND
FSEL = REF
FSEL = LDO5
SHDN
IN
IN
OUTA
IN
IN
IN
IN
SKIP, FSEL
SKIP, FSEL forced to GND or LDO5
SHDN forced to GND or 26V
= 6V to 26V, both SMPS off, includes
= 6V to 26V
+ P
= 6V to 26V, SKIP = FB3 = LDO5,
= 6V to 26V, SKIP = FB5 = LDO5,
= 6V to 26V, FB3 or FB5
CSH3
CSH5
= 15V,
CSL3
CSL3
- V
- V
+ P
= 3.5V, V
CSL5
CSL3
CSL5
CONDITIONS
CSL5
CONDITIONS
< 4.4V
< 50mV (Note 2)
< 50mV (Note 2)
CSL5
A
= 5.3V,
= +25°C.)
High
REF
GND
V
MIN
- 0.4
1.65
3.255
4.925
1.974
LDO5
MIN
170
270
425
-1
-1
5.4
4.5
2.0
3V
97
TYP
REF
REF
= I
= I
MAX
V
2.35
3.375
5.105
2.046
LDO5
MAX
- 0.4
0.5
26.0
LDO5
+1
+1
120
LDO5
230
330
575
5.5
4.5
5.5
40
20
= I
= I
UNITS
OUTA
UNITS
OUTA
mW
kHz
µA
µA
µA
µA
%
V
V
V
V
V
V
V
=
=