MP2488 – 2A, 200kHz, 55V HIGH-POWER LEDS DRIVER
ELECTRICAL CHARACTERISTICS
VIN = 12V, VEN = 2.5V, VCOMP = 1.4V, TA= +25C, unless otherwise noted.
Specifications over temperature are guaranteed by design and characterization.
Parameter
Symbol Condition
Min Typ Max Units
Feedback Voltage
Upper Switch On Resistance (5)
Upper Switch Leakage
Current Limit
Error Amp Voltage Gain
Error Amp Transconductance
Error Amp Min Source current
Error Amp Min Sink current
VIN UVLO Threshold
VIN UVLO Hysteresis
Soft-Start Time (5)
Oscillator Frequency
Minimum Switch On Time (5)
Shutdown Supply Current
Quiescent Supply Current
Thermal Shutdown
Minimum Off Time (5)
Minimum On Time (5)
EN Up Threshold
EN Threshold Hysteresis
VFB
RDS(ON)
4.5V < VIN < 55V
VBST – VSW = 5V
VEN = 0V, VSW = 0V
AVEA
GEA
ICOMP = ±3µA
VFB = 175mV
VFB = 225mV
VIN rising
20mV < VFB < 190mV
fs
RFREQ = 495kΩ
VEN < 0.3V
No load, VFB = 240mV
Hysteresis = 20C
188 200 212 mV
220
mΩ
0.1
μA
2.6 3.2
A
400
V/V
350
µA/V
10
µA
-10
µA
2.7 3.0 3.3
V
0.4
V
0.18
ms
150 200 250 kHz
100
ns
12 25 µA
130
µA
150
C
100
ns
100
ns
1.3 1.5 1.7
V
300
mV
Note:
5) Guaranteed by design.
MP2488 Rev. 1.0
www.MonolithicPower.com
3
6/20/2011
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