APW7128_10 Datasheet, PDF (1/16 Pages) Anpec Electronics Coropration – 30V, 1.2MHz, White LED Driver

APW7128
30V, 1.2MHz, White LED Driver
Features
General Description
• 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: <1µA
• 3mmx3mm DFN-10 Package
• Lead Free and Green Devices Available
(RoHS Compliant)
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 allows 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 solution for various appli-
cations such as LCD monitor and portable devices. The
OVP pin monitors the output voltage to protect IC during
open load and FB pin short circuit operations. The
APW7128 provides the ALS pin to simplify the interface to
an ambient light sensor for automatic dimming. The
APW7128 is available in the thermally enhanced DFN-10
lead 3mmx3mm package.
Applications
Pin Configuration
• Display Backlighting
- Automotive
- LCD Monitors
- Notebook Displays
• Portable Displays
Ordering and Marking Information
FB 1
COMP 2
OVP 3
EN 4
PGND 5
APW7128
Metal
LX Pad
(Bottom)
DFN3x3-10
(Top View)
10 ALS
9 GND
8 BP
7 VIN
6 LX
APW7128
Assembly Material
Handling Code
Temperature Range
Package Code
Package Code
QA : DFN3x3-10
Operating Ambient Temperature Range
I : -40 to 85 ^oC
Handling Code
TR : Tape & Reel
Assembly Material
G : Halogen and Lead Free Device
APW7128 QA:
APW
7128
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).
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.2 - Aug., 2010
www.anpec.com.tw