APW7128
30V, 1.2MHz, White LED Driver
Features
•
•
•
•
•
•
•
•
•
•
•
•
•
Wide Input Voltage Range from 2.7V to 21V
High Current-Limit up to 3.5A
0.5V Reference Voltage with ± 3%
System Accuracy
50mΩ Integrated N-FET
Fixed 1.2MHz Switching Frequency
High Efficiency up to 95%
Open-LED Protection
Under Voltage Lockout Protection
ALS Control Input Pin
Over Temperature Protection
Low Shutdown Current: <1uA
3mm x 3mm DFN-10 Package
Lead Free and Green Devices Available
(RoHS Compliant)
General Description
The APW7128 is the high power and high efficiency
boost converter with an integrated 30V FET ideal for LCD
panel backlighting applications. 30V output voltage al-
lows for 8 high-power LEDs in series, and 3.5A inductor
current limit allows for more LED strings connected in
parallel. The low 0.5V feedback voltage offers higher
efficiency in WLED driver applications. The wide input
range from 2.7V to 21V made APW7128 a perfect solu-
tion for various applications such as LCD monitor and
portable devices. The OVP pin monitors the output volt-
age to protect IC during open load and FB pin short cir-
cuit operations. The APW7128 provides the ALS pin to
simplify the interface to an ambient light sensor for auto-
matic dimming. The APW7128 is available in the ther-
mally enhanced DFN-10 lead 3mm x 3mm package.
Pin Configuration
FB 1
10 ALS
9 GND
Metal
LX Pad
(Bottom)
8 BP
7 VIN
6 LX
Applications
•
Display Backlighting
- Automotive
- LCD Monitors
- Notebook Displays
Portable Displays
COMP 2
OVP 3
EN 4
PGND 5
•
APW7128
DFN3x3-10 Top View
Ordering and Marking Information
APW7128
Assembly Material
Handling Code
Temperature Range
Package Code
APW
7128
XXXXX
Package Code
QA: DFN3x3-10
Operating Ambient Temperature Range
I : -40 to 85
°
C
Handling Code
TR : Tape & Reel
Assembly Material
L : Lead Free Device
G : Halogen and Lead Free Device
XXXXX - Date Code
APW7128 QA:
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-020C 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).
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.
Rev. A.1 - Apr., 2008
1
www.anpec.com.tw
ANPEC [ ANPEC ELECTRONICS COROPRATION ]
