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NCP5005GEVB
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P23
NCP5005
http://onsemi.com
19
0.00
1.00
2.00
3.00
4.00
5.00
6.00
7.00
8.00
9.00
10.00
0
20
40
60
80
100
120
DC (%)
Figure 35. Output Current as a Function of the Operating Condition
I
out
(mA)
Digital EN
Analog PWM
NCP5005 I
out
= f(PWM) @ f = 10 kHz
T
able 1. Recommended Passive Parts
Part
Manufacturer
Description
Part Number
Ceramic Capacitor 1.0
m
F/16 V
MURA
T
A
GRM42 − X7R
GRM42−6X7R−105K16
Ceramic Capacitor 1.0
m
F/25 V
MURA
T
A
GRM42 – X5R
GRM
Ceramic Capacitor 4.7
m
F/6.3 V
MURA
T
A
GRM40 – X5R
GRM40−X5R−475K6.3
Inductor 22
m
H
CoilCraft
1008PS − Shielded
1008PS−223MC
Inductor 22
m
H
CoilCraft
Power W
afer
LPQ4812−223KXC
Inductor 22
m
H
WUR
TH
Power Choke
744031220
Inductor 22
m
H
TDK
Power Inductor
VLP4614T−220MR40
NCP5005
http://onsemi.com
20
T
ypical LEDs Load Mapping
Since
the output power is voltage battery limited (see
Figure 5),
one shall arrange the LED to cope with a specific
need.
In particular
, since the power cannot extend 600 mW
under
realistic
battery
supply
, powering ten LED can be
achieved by a series/parallel combination as depicted in
Figure 36.
Figure 36. Examples of Possible LED Arrangements
D1
LED
D2
LED
D3
LED
D4
LED
D5
LED
D6
LED
D7
LED
D8
LED
D9
LED
D10
LED
Load
75 mA
7.0 V
(T
yp.)
D1
LED
D2
LED
D3
LED
D4
LED
Load
50 mA
14 V (
T
yp.)
D1
LED
D2
LED
Load
60 mA
10.5 V (T
yp.)
D3
LED
D4
LED
D5
LED
D6
LED
D7
LED
D8
LED
D9
LED
D5
LED
D6
LED
D7
LED
D8
LED
D10
LED
D1
1
LED
D12
LED
D13
LED
D14
LED
D15
LED
GND
R1
3.9
W
Sense
Resistor
T
est conditions:
V
bat
= 3.6 V
L
out
= 22
m
H
C
out
= 1.0
m
F
GND
R1
2.7
W
Sense
Resistor
GND
R1
3.3
W
Sense
Resistor
NCP5005
http://onsemi.com
21
Figure 37. NCP5005 Demo Board Schematic Diagram
L1
D1
MBR0530
R1
51R
GND
Z1
TP3
TP2
FB
GND
C1
C2
GND
GND
1
2
3
S1
ENABLE
GND
GND
EN
FB
D2
L
W E67C
D3
L
W E67C
D4
L
W E67C
D5
L
W E67C
TP4
GND
1
2
JP3
JUMP_6
1
2
JP2
JUMP_6
Note:
Use Jumper JP2 to JP3 to adjust the number of LED in the operating string
FB
3
GND
2
EN
4
1
5
U1
NCP5005
J1
VBA
T
J2
GROUND
JP1
Isense
C3
GND
V
bat
V
bat
V
bat
V
out
V
out
I
out
V
out
V
SW
1
m
F/10 V
1
m
F/6.3 V
1
m
F/25 V
22
m
H
Figure 38. NCP5005 Demo Board T
op Silkscreen
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P23
NCP5005GEVB
Mfr. #:
Buy NCP5005GEVB
Manufacturer:
ON Semiconductor
Description:
LED Lighting Development Tools NCP5005 EVAL BRD
Lifecycle:
New from this manufacturer.
Delivery:
DHL
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Ups
TNT
EMS
Payment:
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