Product Brief
CP2140 V1.0
LED Driver Series
4-Channel Low-Dropout Constant-Current Parallel LED Driver with
PWM Dimming Control
General Description
The CP2140, a 4-channel low-dropout constant-current parallel LED
driver, can be used to drive white LED, red LED, blue LED or any color
LED whose forward operating voltage is lower than the battery voltage.
The unique Auto-Mirror
TM
technology is introduced in CP2140, which
can guarantee a constant LED current in various operating conditions.
With the PWM signal on the EN pin, the brightness of LED can be
adjusted by the duty cycle. Without any external components, it is
available in MSOP-8L package and is ideally suitable for portable
device applications.
MSOP-8L
-40
℃
~85℃
Features
No external component required
20mA full scale current per channel
Only 100mV dropout voltage needed at 20mA per channel
LED current matching:
±2%
(typical)
PWM dimming control is supported (0~100kHz)
Over 90% efficiency can be reached
No EMI and switch noise
Thermal shutdown protection
Supply voltage range: 2.7~5.5V
Shutdown current Less than 0.1µA
RoHS compliant and 100% lead(Pb)-free
Applications
Mobile phones
Digital still camera
MP3 players
PDA
GPS receivers
Pin Configuration
MSOP-8 L Package
( Top View)
PGND
EN
VIN
AGND
1
2
3
4
8
7
6
5
LED4
LED3
LED2
LED1
MSOP-8 L Marking
XY
LVG
XY- Manufacture Date Code
LVG - CP2140MM
Copyright ©2007 Chiphomer Technology Limited
1
Product Brief
CP2140 V1.0
LED Driver Series
4-Channel Low-Dropout Constant-Current Parallel LED Driver with
PWM Dimming Control
Typical Application Circuits
Contact with Chiphomer
4F, Building D, 1618 Yishan Road Shanghai, 201103, P.R.C.
Tel: (86)21-64014543 64058488
Fax: (86)21-64050030
Sale: sales@chiphomer.com
Technical support: support@chiphomer.com
Web site: www.chiphomer.com
Shenzhen Office:
10D, Building 2, Dushi Yangguang Garden CheGongMiao, Futian District, Shenzhen, 518048,
P.R.C.
Tel: (86)755-82046706 82047789
Fax: (86)755-8204670
Copyright ©2007 Chiphomer Technology Limited
2