參數(shù)資料
型號(hào)： MAX1711
廠商： Maxim Integrated Products, Inc.
英文描述： High-Speed, Digitally Adjusted Step-Down Controllers for Notebook CPUs
中文描述： 高速、數(shù)字可調(diào)、降壓型控制器，用于筆記本電腦
文件頁(yè)數(shù)： 4/28頁(yè)
文件大?。?/td> 299K
代理商： MAX1711
M
High-S peed, Digitally Adjusted
S tep-Down Controllers for Notebook CPUs
4
_______________________________________________________________________________________
%
V
10
2.20
15
2.30
V
BATT
= 4.5V to 28V, for all
D/A codes, includes load
regulation error
V
CC,
V
DD
Battery voltage, V+
Measured at V
CC
, FB forced above the regulation point
V
CC
= 4.5V to 5.5V, no external REF load
With respect to unloaded output voltage (MAX1710)
(MAX1711)
Overvoltage Trip Threshold
(Note 2)
V
BATT
= 24V,
FB = 2V
(Note 2)
With respect to unloaded output voltage (MAX1710)
(MAX1711)
%
V
CONDITIONS
65
0.75
75
0.85
Output Undervoltage
Protection Threshold
μA
V
950
2.02
Quiescent Supply Current (V
CC
)
Reference Voltage
ns
500
Minimum Off-Time
380
470
260
320
175
225
%
-1.5
1.5
DC Output Voltage Accuracy
TON = REF (400kHz)
TON = open (300kHz)
TON = V
CC
(200kHz)
4.5
5.5
V
2
28
Input Voltage Range
TON = GND (550kHz)
ns
140
180
On-Time
UNIT
MIN
TYP
MAX
PARAMETER
1.98
LX to PGND, ILIM tied to V
CC
mV
85
115
Current-Limit Threshold
(Positive Direction, Fixed)
LX to PGND
mV
35
160
65
240
Current-Limit Threshold
(Positive Direction, Adjustable)
R
LIM
= 100k
R
LIM
= 400k
Rising edge, hysteresis = 20mV, PWM disabled below
this level
4.1
4.4
V
CC
Undervoltage Lockout
Threshold
V
D0–D4,
SHDN
,
SKIP
,
OVP
D0–D4,
SHDN
,
SKIP
,
OVP
SHDN
,
SKIP
,
OVP
D0–D4, each forced to GND
V
V
2.4
Logic Input High Voltage
Logic Input Low Voltage
Logic Input Current
Logic Input Pull-Up Current
0.8
1
10
μA
μA
-1
3
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1, V
BATT
=15V, V
CC
= V
DD
= 5V,
SKIP
= GND,
T
A
= -40°C to +85°C,
unless otherwise noted.) (Note 3)
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V
BATT
= 15V, V
CC
= V
DD
= 5V,
SKIP
= GND,
T
A
=
0°C to +85°C
, unless otherwise noted.)
PARAMETER
CONDITIONS
TON logic input high level
TON logic input upper-mid-range level
TON logic input lower-mid-range level
TON logic input low level
TON only, forced to GND or V
CC
V
V
V
V
V
CC
- 0.4
3.15
1.65
TON V
CC
Level
TON Float Voltage
TON Reference Level
TON GND Level
TON Logic Input Current
3.85
2.35
0.5
3
μA
-3
UNIT
MIN
TYP
MAX
%
-1.7
1.7
DAC codes from 1.32V to 2V
DAC codes from 0.925V to
1.275V
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