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參數(shù)資料
| 型號(hào)： | MAX786 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Dual-Output Power-Supply Controller for Notebook Computers(具有25μA關(guān)斷的,3.3V/5V筆記本型電腦電源) |
| 中文描述： | 雙輸出電源控制器，用于筆記本電腦 |
| 文件頁數(shù)： | 3/24頁 |
| 文件大小： | 301K |
| 代理商： | MAX786 |
M
Dual-Output Power-S upply
Controller for Notebook Computers
_________________________________________________________________________________________________
3
Note 1:
Since the reference uses VL as its supply, its V+ line regulation error is insignificant.
Note 2:
The main switching outputs track the reference voltage. Loading the reference reduces the main outputs slightly according
to the closed-loop gain (AV
CL
) and the reference voltage load-regulation error. AV
CL
for the +3.3V supply is unity gain.
AV
CL
for the +5V supply is 1.54.
PARAMETER
CONDITIONS
MIN
12
200
VH -0.5
TYP
20
500
MAX
30
1000
UNITS
μA
μA
V
V
μA
Q1, Q2 Source Current
Q1, Q2 Sink Current
Q1, Q2 Output High Voltage
Q1, Q2 Output Low Voltage
Quiescent VH Current
OSCILLATOR AND INPUTS/OUTPUTS
VH = 15V, V
OUT
= 2.5V
VH = 15V, V
OUT
= 2.5V
I
SOURCE
= 5μA, VH = 3V
I
SINK
= 20μA, VH = 3V
VH = 18V, D1 = D2 = 5V, no external load
0.4
10
4
Oscillator Frequency
SYNC = 3.3V
SYNC = 0V, 5V
270
170
200
200
300
200
330
230
kHz
SYNC High Pulse Width
SYNC Low Pulse Width
SYNC Rise/Fall Time
Oscillator SYNC Range
ns
ns
ns
kHz
Not tested
200
350
240
89
92
Maximum Duty Cycle
SYNC = 3.3V
SYNC = 0V or 5V
92
95
%
Input Low Voltage
SHDN
, ON3, ON5, SYNC
0.8
V
Input High Voltage
SHDN
, ON3, ON5
SYNC
2.4
V
VL -0.5
Input Current
DL3/DL5 Sink/Source Current
DH3/DH5 Sink/Source Current
DL3/DL5 On-Resistance
DH3/DH5 On-Resistance
SHDN
, ON3, ON5 V
IN
= 0V, 5V
V
OUT
= 2V
BST3-LX3 = BST5-LX5 = 4.5V, V
OUT
= 2V
High or low
High or low, BST3-LX3 = BST5-LX5 = 4.5V
±1
μA
A
A
1
1
7
7
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 15V, GND = PGND = 0V, I
= I
= 0mA,
SHDN
= ON3 = ON5 = 5V, other digital input levels are 0V or +5V,
T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
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