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MP2487 データシート(PDF) 3 Page - Monolithic Power Systems

部品番号 MP2487
部品情報  55V, 1A High Power LED Driver
PDF  13 Pages
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メーカー  MPS [Monolithic Power Systems]
ホームページ  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP2487 データシート(HTML) 3 Page - Monolithic Power Systems

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MP2487 – 55V, 1A, HIGH-POWER LEDS DRIVER
MP2487 Rev. 1.0
www.MonolithicPower.com
3
9/22/2011
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
VIN = 12V, VEN = 2.5V, VCOMP = 1.4V, TA= +25°C, unless otherwise noted.
Specifications over temperature are guaranteed by design and characterization.
Parameter
Symbol Condition
Min
Typ
Max
Units
Feedback Voltage
VFB
4.5V < VIN < 55V
188
200
212
mV
Upper Switch On Resistance
(5)
RDS(ON) VBST – VSW = 5V
220
mΩ
Upper Switch Leakage
VEN = 0V, VSW = 0V
0.1
μA
Current Limit
At Maximum Duty Cycle
1.3
1.5
A
Error Amp Voltage Gain
AVEA
400
V/V
Error Amp Transconductance
GEA
ICOMP = ±3µA
350
µA/V
Error Amp Min Source current
VFB = 175mV
10
µA
Error Amp Min Sink current
VFB = 225mV
-10
µA
VIN UVLO Threshold
VIN rising
2.7
3.0
3.3
V
VIN UVLO Hysteresis
0.4
V
Soft-Start Time
(5)
20mV < VFB < 190mV
0.18
ms
Oscillator Frequency
fs
RFREQ = 495kΩ
150
200
250
kHz
Minimum Switch On Time
(5)
100
ns
Shutdown Supply Current
VEN < 0.3V
12
25
µA
Quiescent Supply Current
No load, VFB = 240mV
130
µA
Thermal Shutdown
Hysteresis = 20
°C
150
°C
Minimum Off Time
(5)
100
ns
Minimum On Time
(5)
100
ns
EN Up Threshold
1.3
1.5
1.7
V
EN Threshold Hysteresis
300
mV
Note:
5) Guaranteed by design.



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