參數(shù)資料
型號： MAX1777-MAX1999
廠商： Maxim Integrated Products, Inc.
英文描述： High-Efficiency, Quad Output, Main Power- Supply Controllers for Notebook Computers
中文描述： 高效率，四路輸出，主電源用于筆記本電腦控制器
文件頁數(shù)： 6/32頁
文件大?。?/td> 497K
代理商： MAX1777-MAX1999
M
High-Effic ienc y, Quad Output, Main Power-
S upply Controllers for Notebook Computers
6
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1 and Figure 2, no load on LDO5, LDO3, OUT3, OUT5, and REF, V+ = 12.0.V, ON3 = ON5 = V
CC
, V
SHDN
= 5V,
T
A
= -40°C to +85°C
, unless otherwise noted.) (Note 1)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
LDO5 Bootstrap Switch Threshold
Falling edge of OUT5, rising edge at OUT5 regulation
point
4.43
4.69
V
LDO5 Bootstrap
Switch Resistance
LDO5 to OUT5, V
OUT5
= 5V
3.2
LDO3 Output Voltage
ON3 = ON5 = GND, 6V < V+ < 24V, 0 < I
LDO3
< 100mA
Falling edge of OUT3, rising edge at OUT3 regulation
point
3.27
3.43
V
LDO3 Bootstrap Switch Threshold
2.80
3.02
V
LDO3 Bootstrap
Switch Resistance
LDO3 to OUT3, V
OUT3
= 3.2V
3.5
REF Output Voltage
REF Load Regulation
REF Sink Current
V+ Operating Supply Current
V+ Standby Supply Current
V+ Shutdown Supply Current
No external load
0 < I
LOAD
< 50μA
REF in regulation
LDO5 switched over to OUT5, 5V SMPS
V+ = 6V to 24V, both SMPSs off, includes I
SHDN
V+ = 4.5V to 24V
1.975
2.025
10
V
mV
μA
μA
μA
μA
10
50
300
15
Quiescent Power Consumption
Both SMPSs on, FB3 = FB5 =
SKIP
= GND, V
OUT3
=
3.5V, V
OUT5
= 5.3V
4.5
mW
FAULT DETECTION
Overvoltage Trip Threshold
FB3 or FB5 with respect to nominal regulation point
+8
+14
%
PGOOD Threshold
FB3 or FB5 with respect to nominal output, falling edge,
typical hysteresis = 1%
-12
-7
%
PGOOD Output Low Voltage
PGOOD Leakage Current
I
SINK
= 4mA
High state, forced to 5.5V
0.3
1
V
μA
Output Undervoltage
Shutdown Threshold
FB3 or FB5 with respect to nominal output voltage
65
75
%
Output Undervoltage
Shutdown Blanking Time
From ON_ signal
10
40
ms
INPUTS AND OUTPUTS
Feedback Input Leakage Current
V
FB3
= V
FB5
= 2.2V
Low level
High level
Low level
Float level
High level
Low level
High level
-200
+200
0.6
nA
PRO
Input Voltage
1.5
V
0.8
2.3
1.7
2.4
SKIP
Input Voltage
V
0.8
TON Input Voltage
2.4
V
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