900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf






Micro Bridge Technology

PT4402 Datasheet Preview

PT4402 Datasheet

3/4 Channel Parallel White/Blue LED Drivers

No Preview Available !

PT4401/2
3/4 Channel Parallel White/Blue LED Drivers
„ GENERAL DESCRIPTION
The PT4401/2 is a series of White/Blue LED drivers, with PT4401 capable of driving three LEDs and PT4402 driving
four LEDs. There is no external component needed, which helps to simplify the system design and lower the system cost
significantly. The circuit is optimized to provide over 90% efficiency. The PT4401/2 is ideal to drive white LEDs used for
Li-ion battery powered LCD displays. The LED brightness can be adjusted in real time through a PWM signal at the EN pin.
The target end applications are small color LCD displays in mobile phones, smart phone, digital cameras, PDA etc. PT4401
is available in SOT-23-6 package and PT4402 in MSOP-8 package, respectively.
„ FEATURES
„ APPLICATIONS
z No external component required
z Fixed 20mA or 15mA sinking current
z Individual current sink circuit for each output to prevent short/open
circuit on LEDs
z PTC LED current for luminosity compensation
z 3 channels (PT4401/SOT23-6) and 4 channels (PT4402/MSOP-8)
available
z PWM tuned LED brightness through EN pin
z Supply voltage range 2.7V~6.0V
z 0.1uA standby current
z Mobile phone
z PDAs
z MP3s
„ TYPICAL APPLICATION
VDD
VDD LED1
LED2
GND ... ...
EN LEDn
Micro Bridge Technology Co.,Ltd.
www.micro-bridge.com
Page 1




Micro Bridge Technology

PT4402 Datasheet Preview

PT4402 Datasheet

3/4 Channel Parallel White/Blue LED Drivers

No Preview Available !

„ ORDERING INFORMATION
PT4401/2
3/4 Channel Parallel White/Blue LED Drivers
„ PIN CONFIGURATION
„ PIN DESCRIPTIONS
Pin No.
SOT-23-6 MSOP8
13
24
1
32
4~6 5~8
Symbol
Description
VDD
GND
PGND
EN
LED1~3/4
Power Supply
Ground
Power Ground
Enable Input Logic, Enable High
Output Pins. Connected to LED’s Cathode.
„ ABSOLUTE MAXIMUM RATINGS „ RECOMMANDED OPERATING RANGE
Symbol
VDD
VLEDN
VEN
PD1
PD2
Tjun
TSTG
TSOLDER
PARAMETER
VDD Supply Voltage
VLED Output Voltage
VEN Pin Input Voltage
Maximum Power
Dissipation, SOT-23-6
Maximum Power
Dissipation, MSOP8
Junction Temperature
Storage Temperature
Soldering Temperature
VALUE
-0.3~6.5V
-0.3~ VIN V
-0.3~5.5V
586mW
695mW
150
-50~150
260, 10s
Symbol
VDD
VEN
θJA
TOPT
PARAMETER
VALUE
VDD Range
-0.3~6.0V
VEN Range
Thermal Resistance,
SOT-23-6
-0.3~(VIN+0.3)<5.5V
220°C/W
Thermal Resistance, MSOP8
180°C/W
Operation Temp.
-40~85°C
Micro Bridge Technology Co.,Ltd.
www.micro-bridge.com
Page 2


Part Number PT4402
Description 3/4 Channel Parallel White/Blue LED Drivers
Maker Micro Bridge Technology
PDF Download

PT4402 Datasheet PDF






Similar Datasheet

1 PT4401 3/4 Channel Parallel White/Blue LED Drivers
Micro Bridge Technology
2 PT4402 3/4 Channel Parallel White/Blue LED Drivers
Micro Bridge Technology
3 PT4404 Low Dropout Adjustable 350mA Current Regulator
PowTech





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z



Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy