900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf






ANPEC

APW7228B Datasheet Preview

APW7228B Datasheet

4-Channel LED Backlight Controller

No Preview Available !

APW7228B
4-Channel LED Backlight Controller
Features
General Description
4 Channels
5.5V to 30V Input Voltage Supply
Drive up to 68 (17x4) White LEDs
The APW7228B is a high efficiency driver for 4 channels
of LEDs. It contains an adjustable-frequency current-
mode PWM step-up controller, a 5V linear regulator, dim-
(3.5V/160mA Each)
ming control circuit and eight regulated current source
Current Match (Balance) ±1% (Typ.)
circuit.
Current Accuracy ±1% (Typ.)
The APW7228B is capable of driving typically 68 (4x17)
External PWM Input from 100Hz to 50kHz Dim- pieces of 3.5V/160mA LEDs. It contains 4 channels of
ming Frequency
voltage controlled current sources with typical currents
Time Shift PWM Dimming Control
matching of +1%, which compensate for the non-unifor-
Random Channel Selection for Dynamic Opera- mity effect of forward voltages variance in the LED stacks.
tions
Adjustable Switching Frequency
Protections
To minimize the voltage headroom and power loss in the
typical multi-strings operation, the APW7228B features a
dynamic headroom control that monitors the highest LED
- String Open Circuit Detection
forward voltage string and uses its feedback signal for
- String Short Circuit Detection
output regulation.
- Over-Temperature Protection
The APW7228B features extensive protection functions
- Over-Voltage Protection
that include LED strings open and short circuit detections,
Available in TSSOP-16P, SOP-16, DIP-16 and Output Over-Voltage Protection (OVP) and Over-Tempera-
QFN4x4-16A Packages
Lead Free and Green Devices Available
ture Protection (OTP).
The APW7228B is available in TSSOP-16P, SOP-16, DIP-
(RoHS Compliant)
16 and QFN4x4-16A package.
Applications
NB LED Backlight
LCD Monitor Backlight
LCD TV LED Backlight
Simplified Application Circuit
VIN
VOUT
ENA
PWM
APW7228B
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and
advise customers to obtain the latest version of relevant information to verify before placing orders.
Copyright © ANPEC Electronics Corp.
1
Rev. A.9 - Mar., 2013
www.anpec.com.tw




ANPEC

APW7228B Datasheet Preview

APW7228B Datasheet

4-Channel LED Backlight Controller

No Preview Available !

APW7228B
Ordering and Marking Information
APW7228B
Assembly Material
Handling Code
Temperature Range
Package Code
Package Code
R : TSSOP-16P K : SOP-16 J: DIP-16 QA : QFN4x4-16A
Operating Ambient Temperature Range
I : -40 to 85 oC
Handling Code
TR : Tape & Reel
Assembly Material
G : Halogen and Lead Free Device
APW7228B R :
W7228B
XXXXX
XXXXX - Date Code
APW7228B K :
W7228B
XXXXX
XXXXX - Date Code
APW7228B J :
W7228B
XXXXX
XXXXX - Date Code
APW7228B QA : W7228B
XXXXX
XXXXX - Date Code
Note: ANPEC lead-free products contain molding compounds/die attach materials and 100% matte tin plate termination finish; which
are fully compliant with RoHS. ANPEC lead-free products meet or exceed the lead-free requirements of IPC/JEDEC J-STD-020D for
MSL classification at lead-free peak reflow temperature. ANPEC defines “Green” to mean lead-free (RoHS compliant) and halogen
free (Br or Cl does not exceed 900ppm by weight in homogeneous material and total of Br and Cl does not exceed 1500ppm by
weight).
Pin Configuration
ISEN 1 1
ISEN 2 2
GND 3
ISEN 3 4
ISEN 4 5
ISET 6
OVP 7
RT 8
TSSOP -16 P
16 PWM
15 SSTCMP
14 STATUS
13 VIN
12 VREF
11 LDR
10 ISW
9 ENA
Copyright © ANPEC Electronics Corp.
2
Rev. A.9 - Mar., 2013
www.anpec.com.tw



Part Number APW7228B
Description 4-Channel LED Backlight Controller
Maker ANPEC
Total Page 3 Pages
PDF Download

APW7228B Datasheet PDF





Similar Datasheet

1 APW7228B 4-Channel LED Backlight Controller
ANPEC





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