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Teilenummer | EMD2080 |
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Beschreibung | Constant Current LED Lighting Driver | |
Hersteller | Elite Semiconductor | |
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Gesamt 11 Seiten ESMT/EMP
Preliminary
EMD2080
Constant Current LED Lighting Driver
With PWM Dimming Control
General Description
The EMD2080 was designed with high efficiency step
up DC/DC converter with constant current source
for driving lighting LEDs. Wide input voltage range
makes the application more flexible. LED dimming
can be achieved with pulse width modulation
dimming on DIM pin. The EMD2080 switches at
1.2MHz and allows using small inductor and both of
input/output capacitors. An internal compensation
can reduce external component.
Features
g Supply Voltage: 6V ~ 30V
g Driving Current:
n Up to 500mA @VIN=12V, VOUT=22.4V
g Over Voltage Protection: 36V
g Shutdown Current < 1μA
g Reference Voltage 0.245V
g Internal Soft Start and Compensation
g 1.4A Internal power MOSFET Switch
g Thermal Shutdown Protection
The EMD2080 include current limit, over voltage and
thermal shutdown protection. The EMD2080 is
available in MSOP-10 package.
Applications
g Mood and Accent Lighting
g Automotive Lighting
g Ambient Lighting
g RGB LED Driver
Typical Application
Fig. 1
Elite Semiconductor Memory Technology Inc. /Elite MicroPower Inc. Publication Date: Feb. 2012
Revision: 0.3
1/11
ESMT/EMP
Preliminary
Typical Performance Characteristics
VIN = 12V, unless otherwise specified
OVP Waveform
EMD2080
Start-up Waveform
1.22
1.20
1.18
1.16
1.14
1.12
1.10
1.08
-40
Fosc vs. Temperature
-15 10 35 60
Temperature(℃)
Vfb vs. Temperature
0.26
0.255
0.25
0.245
0.24
0.235
0.23
85 -40 -25 -10 5 20 35 50 65 80 95 110 125
Temperature(℃)
0.75
0.70
0.65
0.60
0.55
0.50
0.45
0.40
0.35
-40
RDS-on vs. Temperature
-15 10 35 60
Temperature (℃)
200Hz
20
PWM Duty vs. ILEDs
500Hz 1k 2k 32k 100k
200k
15
10
5
0
85 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
Duty Cycle (%)
Elite Semiconductor Memory Technology Inc. /Elite MicroPower Inc. Publication Date: Feb. 2012
Revision: 0.3
6/11
6 Page | ||
Seiten | Gesamt 11 Seiten | |
PDF Download | [ EMD2080 Schematic.PDF ] |
Teilenummer | Beschreibung | Hersteller |
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