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參數(shù)資料
| 型號： | MAX1714 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | High-Speed Step-Down Controller for Notebook Computers |
| 中文描述： | 高速、降壓型控制器，用于筆記本電腦 |
| 文件頁數(shù)： | 4/24頁 |
| 文件大?。?/td> | 443K |
| 代理商： | MAX1714 |
M
High-Speed Step-Down Controller
for Notebook Computers
4
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1, 4A components from Table 1, V+ = 15V, V
CC
= V
DD
= +5V,
SKIP
= AGND,
T
A
= -40°C to +85°C
, unless other-
wise noted.) (Notes 1, 5)
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, 4A components from Table 1, V+ = +15V, V
CC
= V
DD
= +5V,
SKIP
= AGND,
T
A
=
0°C to +85°C
, unless otherwise
noted.) (Note 1)
CONDITIONS
TON V
CC
Level
TON Float Voltage
TON Reference Level
TON AGND Level
Forced to AGND or V
CC
TON Input Current
V
V
V
V
V
CC
- 0.4
3.15
1.65
3.85
2.35
0.5
3
μA
-3
UNITS
MIN
TYP
MAX
PARAMETER
TON = V
CC
(200kHz)
Reference Voltage
1.98
2.02
V
V
CC
= 4.5V to 5.5V, no external REF load
With respect to error comparator threshold
(MAX1714A only)
PARAMETER
MIN
2
4.5
0.985
2.462
TYP
MAX
28
5.5
1.015
2.538
UNITS
TON = unconnected (300kHz)
On-Time
140
175
260
380
180
225
320
470
500
750
ns
TON = AGND (600kHz)
TON = REF (450kHz)
Input Voltage Range
V
Error Comparator Threshold
(DC Output Voltage Accuracy)
(Note 3)
V
Minimum Off-Time
Quiescent Supply Current (V
CC
)
FB = AGND
FB = V
DD
ns
μA
FB = OUT
3.25
3.35
Logic Input Current
-1
1
μA
SHDN
,
SKIP
Logic Input Low Voltage
0.8
V
SHDN
,
SKIP
Logic Input High Voltage
V
2.4
V
SHDN
,
SKIP
V
CC
Undervoltage Lockout
Threshold
4.1
4.4
Rising edge, hysteresis = 20mV, PWM disabled below
this level
Output Undervoltage
Protection Threshold
65
75
CONDITIONS
%
160
240
With respect to error comparator threshold
V
ILIM
= 2.0V
V
ILIM
= 0.5V
Current-Limit Threshold
(Positive Direction, Adjustable)
35
65
V+ = 24V,
V
OUT
= 2V
(Note 4)
(Note 4)
FB forced above the regulation point
mV
Overvoltage Trip Threshold
PGND - LX
Current-Limit Threshold (Positive
Direction, Fixed)
Battery voltage, V+
V
CC,
V
DD
85
115
mV
PGND - LX, ILIM = V
CC
V+ = 4.5V to 28V,
SKIP
= V
CC
10
15
%
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