NCP5009DMR2 ON Semiconductor, NCP5009DMR2 Datasheet - Page 11

• Manufacturer Part Number: NCP5009DMR2
• Description: IC LED DRVR WHT BCKLT 10MICROSMD
• Manufacturer: ON Semiconductor
• Type: Backlight, White LEDr

Specifications of NCP5009DMR2

• Topology: PWM, Step-Up (Boost)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Backlight
• Type - Secondary: White LED
• Frequency: 5MHz
• Voltage - Supply: 2.7 V ~ 6 V
• Voltage - Output: 15V
• Mounting Type: Surface Mount
• Package / Case: 10-MSOP, Micro10™, 10-uMAX, 10-uSOP
• Operating Temperature: -25°C ~ 85°C
• Current - Output / Channel: 75mA
• Internal Switch(s): Yes
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Efficiency: -
• Other names: NCP5009DMR2OSTR

DC/DC Converter Operation
depicted in Figure 21, the load being supplied by the pulsed
current coming from the external inductor L1. The current
The DC/DC converter operates with a boost structure
I
I
peak_ref
valley_ref
POR
+
−
U4
GND
V
bat
+
U2
−
GND
V
bat
U5
Figure 21. Basic DC/DC Boost Structure
NCP5008, NCP5009
U3
U6
http://onsemi.com
GND
V
11
bat
U1
+
−
is monitored by the internal sense resistor Rsense to Set and
Reset the flip−flop U3 and U6 according to the comparators
U2 and U4 output state.
U7
Rsense
1R8
GND
GND
Q1
2.2 mF/16 V
V
L1
L2
bat
GND
C2
V
bat
L1
22 mH
D5
MBR0520
D4
LED
D3
LED
D2
LED
D1
LED