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參數(shù)資料
| 型號： | MAX786 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Dual-Output Power-Supply Controller for Notebook Computers(具有25μA關斷的,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)： | 2/24頁 |
| 文件大?。?/td> | 301K |
| 代理商： | MAX786 |
M
Dual-Output Power-S upply
Controller for Notebook Computers
2
________________________________________________________________________________________________
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(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.)
ABSOLUTE MAXIMUM RATINGS
V+ to GND ................................................................-0.3V, +36V
PGND to GND .......................................................................±2V
VL to GND...................................................................-0.3V, +7V
BST3, BST5 to GND..................................................-0.3V, +36V
LX3 to BST3................................................................-7V, +0.3V
LX5 to BST5................................................................-7V, +0.3V
Inputs/Outputs to GND
(D1, D2,
SHDN
, ON5, REF, SS5, CS5,
FB5, SYNC, CS3,FB3, SS3, ON3)...............-0.3V, (VL + 0.3V)
VH to GND ..................................................................-0.3V, 20V
Q1, Q2 to GND ...............................................-0.3V, (VH + 0.3V)
DL3, DL5 to PGND..........................................-0.3V, (VL + 0.3V)
DH3 to LX3 .................................................-0.3V, (BST3 + 0.3V)
DH5 to LX5 .................................................-0.3V, (BST5 + 0.3V)
REF, VL Short to GND................................................Momentary
REF Current........................................................................20mA
VL Current..........................................................................50mA
Continuous Power Dissipation (T
= +70°C)
SSOP (derate 9.52mW/°C above +70°C)....................762mW
Operating Temperature Ranges
MAX786CAI/MAX786_CAI.................................0°C to +70°C
MAX786EAI/MAX786_EAI...............................-40°C to +85°C
Lead Temperature (soldering, 10sec) ............................+300°C
MAX786S
MAX786R
MAX786
FB3 Output Voltage
3.46
3.65
2.5
3.75
V
0mV < (CS3-FB3) < 70mV, 6V < V + < 30V
(includes load and line regulation)
3.32
3.50
3.60
REF Load Regulation
V+ Shutdown Current
V+ Standby Current
30
25
70
75
40
110
mV
μA
μA
0mA < I
< 5mA (Note 2)
–———N= D1 = D2 = ON3 = ON5 = 0V, V+ = 30V
D1 = D2 = ON3 = ON5 = 0V, V+ = 30V
PARAMETER
VL Output Voltage
VL Fault Lockout Voltage
VL/FB5 Switchover Voltage
REF Output Voltage
REF Fault Lockout Voltage
MIN
TYP
MAX
4.5
3.6
4.2
3.24
2.4
5.5
4.2
4.7
3.36
3.2
UNITS
Current-Limit Voltage
SS3/SS5 Source Current
SS3/SS5 Fault Sink Current
INTERNAL REGULATOR AND REFERENCE
V
V
V
V
V
80
2.5
2
100
4.0
120
6.5
mV
μA
mA
Line Regulation
0.03
%/V
Load Regulation
%
3.17
3.35
3.46
Input Supply Range
5.5
30
V
FB5 Output Voltage
4.80
5.08
5.20
V
CONDITIONS
ON5 = ON3 = 0V, 5.5V < V+ < 30V, 0mA < I
L
< 25mA
Falling edge, hysteresis = 1%
Rising edge of FB5, hysteresis = 1%
No external load (Note 1)
Falling edge
CS3-FB3 or CS5-FB5
Either controller (V+ = 6V to 30V)
Either controller (CS_ -FB_ = 0mV to 70mV)
0mV < (CS5-FB5) < 70mV, 6V < V + < 30V
(includes load and line regulation)
Quiescent Power Consumption
(both PWM controllers on)
5.5
8.6
mW
D1 = D2 = 0V, FB5 = CS5 = 5.25V,
FB3 = CS3 = 3.5V
V+ Off Current
COMPARATORS
30
60
μA
FB5 = CS5 = 5.25V, VL switched over to FB5
D1, D2 Trip Voltage
D1, D2 Input Current
1.61
1.69
±100
V
Falling edge, hysteresis = 1%
D1 = D2 = 0V, 5V
nA
3.3V AND 5V STEP-DOWN CONTROLLERS
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