© Semiconductor Components Industries, LLC, 2007
July, 2007 - Rev. 2
1 Publication Order Number:
NCP5603/D
NCP5603
High Efficiency Charge Pump
Converter
The NCP5603 is an integrated circuit dedicated to the medium
power White LED applications. The power conversion is achieved by
means of a charge pump structure, using two external ceramic
capacitors, making the system extremely tiny. The device supplies a
constant voltage to the load from a low battery voltage source. It is
particularly suited for the High Efficiency LED used in low cost, low
power applications, with high extended battery life.
Features
Wide Battery Supply Voltage Range: 2.7 < V
CC
< 5.5 V
Automatic Operating Mode 1X, 1.5X and 2X Improves Efficiency
Dimmable Output Current
Up to 350 mA Output Pulsed Current
Selectable Output Voltage
High Efficiency Up To 90%
Supports 2.5 kV ESD, Human Body Model
Supports 200 V Machine Model ESD
Low 40 mA Short Circuit Current
Pb-Free Package is Available
Applications
High Power LED
Back Light Display
High Power Flash
http://onsemi.com
DFN10, 3x3
MN SUFFIX
CASE 485C
5603 = Specific Device Code
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G = Pb-Free Package
MARKING
DIAGRAM
5603
ALYWG
G
3
C2P
V
bat
2
C1P
V
out
8
GND
9
10
C1N
(Top View)
1
Fsel
4
Vsel
5
7
C2N
6
EN
PIN CONNECTIONS
Device Package Shipping
ORDERING INFORMATION
NCP5603MNR2 DFN10 3000/ Tape & Reel
NCP5603MNR2G
DFN10
(Pb-Free)
For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
3000/ Tape & Reel
(Note: Microdot may be in either location)
NCP5603
http://onsemi.com
2
V
bat
C1P
3
2
9
C1
1 mF/16 V
C1N
EN/PWM
6
Fsel
4
Vsel
5
GND
8
GND
V
bat
NCP5603
C2N
C2P
C2
7
10
V
out
D1
LWT67C
R1
10 W
D2
LWT67C
R2
D3
LWT67C
R3
D4
LWT67C
R4
Figure 1. Typical Application
U1
4.7 mF/16 V
C3
GND
1
1 mF/16 V
GND
GND
C4
1 mF/16 V
VSEL
FSEL
PWM
10 W
10 W
10 W
NCP5603
http://onsemi.com
3
Figure 2. Block Diagram
LOGIC AND ANALOG
CONTROL
4
5
6
V
bat
Thermal Shutdown
LEVEL SHIFTER AND MOSFET DRIVE
POWER SWITCHES
V
bat
+
-
GND
V
bat
GND
BANDGAP
GND
1
V
out
V
out
2
C1P
9
C1N
7
C2N
10
C2P
3
V
bat
V
bat
Fsel
Vsel
EN
8
GND

NCP5603MNR2

Mfr. #:
Manufacturer:
ON Semiconductor
Description:
LED Lighting Drivers 4.5V/5.0V Hi Eff.
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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