MC34845BEPR2 Freescale Semiconductor, MC34845BEPR2 Datasheet - Page 11

• Manufacturer Part Number: MC34845BEPR2
• Description: IC LED DVR BACKLIGHT 6CH 24QFN
• Manufacturer: Freescale Semiconductor
• Type: Backlight, White LED, Color LEDr

Specifications of MC34845BEPR2

• Topology: PWM, Step-Up (Boost)
• Number Of Outputs: 6
• Internal Driver: Yes
• Type - Primary: Backlight
• Frequency: 270kHz ~ 330kHz
• Voltage - Supply: 5 V ~ 21 V
• Voltage - Output: 8 V ~ 60 V
• Mounting Type: Surface Mount
• Package / Case: 24-QFN Exposed Pad
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 30mA
• Internal Switch(s): Yes
• Efficiency: 90%
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Analog Integrated Circuit Device Data
Freescale Semiconductor
-0.500%
-0.500%
-1.000%
-1.000%
-1.500%
-1.500%
-2.000%
-2.000%
100.0
2.000%
2.000%
1.500%
1.500%
1.000%
1.000%
0.500%
0.500%
0.000%
0.000%
90.0
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.0
Figure 6. Typical System Efficiency vs Duty Cycle (FPWM=25kHz)
0
1
1
Figure 7. Typical ILED Dimming Linearity (FPWM=25kHz)
10
Chablis ILED Dimming Linearity (FPWM=25kHz)
Chablis ILED Dimming Linearity (FPWM=25kHz)
TYPICAL PERFORMANCE CURVES
20
30
40
Vin=9V
Fs = 600kHz
L=10uH, 68mOhm (IHLP2525CZER100M01)
Schottky 5A, 100V (PDS5100HDICT-ND)
COUT = 2x2.2µF
FPWM=25kHz
Load = 9 LEDs, 20mA/channel
VLED = 27.8V, ±0.5V /channel
% Duty cycle
% Duty cycle
Duty Cycle (%)
10
10
50
60
70
(-) Mismatch @ 25°C
(-) Mismatch @ 25°C
(+) Mismatch @ 25°C
(+) Mismatch @ 25°C
80
TYPICAL PERFORMANCE CURVES
90
100
100
100
INTRODUCTION
34845
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