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參數(shù)資料
| 型號： | MP2482DN |
| 廠商： | MONOLITHIC POWER SYSTEMS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 9 A SWITCHING REGULATOR, 600 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | MS-012BA, SOIC-8 |
| 文件頁數(shù)： | 4/11頁 |
| 文件大?。?/td> | 350K |
| 代理商： | MP2482DN |
MP2482 – 5A, 30V, 420KHZ STEP-DOWN CONVERTER
MP2482 Rev.1.2
www.MonolithicPower.com
2
10/22/2009
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
2009 MPS. All Rights Reserved.
PACKAGE REFERENCE
SW
BST
VCC
GND
IN
EN/SYNC
PG
FB
1
2
3
4
8
7
6
5
TOP VIEW
EXPOSED PAD
ON BACKSIDE
Part Number*
Package
Temperature
MP2482DN
SOIC8E
–40
°C to +85°C
* For Tape & Reel, add suffix –Z (e.g. MP2482DN–Z)
For RoHS Compliant Packaging, add suffix –LF
(e.g. MP2482DN–LF–Z)
ABSOLUTE MAXIMUM RATINGS (1)
Supply Voltage VIN....................................... 32V
VSW.........................-0.3V(-5V for < 10ns) to 33V
VBS ....................................................... VSW + 6V
All Other Pins................................. –0.3V to +6V
Junction Temperature...............................150
°C
Lead Temperature ....................................260
°C
Storage Temperature ..............–65
°C to +150°C
Recommended Operating Conditions
(2)
Supply Voltage VIN........................... 4.5V to 30V
Operating Temperature .............–40
°C to +85°C
Thermal Resistance
(3)
θJA
θJC
SOIC8E .................................. 50 ...... 10...
°C/W
Notes:
1) Exceeding these ratings may damage the device.
2) The device is not guaranteed to function outside of its
operating conditions.
3) Measured on JESD51-7, 4-layer PCB.
ELECTRICAL CHARACTERISTICS
VIN = 12V, TA = +25°C, unless otherwise noted.
Parameters
Symbol Condition
Min
Typ
Max
Units
Feedback Voltage
VFB
4.5V
≤ VIN ≤ 30V
0.788
0.808
0.828
V
Feedback Current
IFB
VFB = 0.8V
10
nA
Switch On Resistance
(4)
RDS(ON)
50
m
Switch Leakage
VEN = 0V, VSW = 0V
0
10
μA
Current Limit
(4)
7.5
9
A
Oscillator Frequency
fSW
VFB = 0.6V
240
420
600
kHz
Fold-back Frequency
VFB = 0V
25
115
205
kHz
Maximum Duty Cycle
VFB = 0.6V
85
90
%
Minimum On Time
tON
100
ns
Under Voltage Lockout Threshold Rising
3.9
4.1
4.3
V
Under Voltage Lockout Threshold Hysteresis
880
mV
EN Input Low Voltage
0.4
V
EN Input High Voltage
1.5
V
VEN = 2V
2
EN Input Current
VEN = 0V
0
μA
Sync Frequency Range (Low)
FSYNCL
300
kHz
Sync Frequency Range (High)
FSYNCH
1.5
MHz
Enable Turnoff Delay
TOFF
5.0
μs
Supply Current (Shutdown)
VEN = 0V
0
μA
Supply Current (Quiescent)
VEN = 2V, VFB = 1V
0.9
1.1
mA
Thermal Shutdown
150
°C
Power Good Control
Power Good Threshold Rising
0.69
0.74
0.79
V
Power Good Threshold Hysteresis
40
mV
PG Pin Level
VPG
PG Sink 4mA
0.4
V
Note:
4) Guaranteed by design.
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