APW7128 Datasheet, PDF (1/15 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: <1uA
• 3mm x 3mm DFN-10 Package
• Lead Free and Green Devices Available
(RoHS Compliant)
Applications
• Display Backlighting
- Automotive
- LCD Monitors
- Notebook Displays
• Portable Displays
Ordering and Marking Information
APW7128
Assembly Material
Handling Code
Temperature Range
Package Code
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
COMP 2
OVP 3
EN 4
PGND 5
Metal
LX Pad
(Bottom)
10 ALS
9 GND
8 BP
7 VIN
6 LX
APW7128
DFN3x3-10 Top View
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
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-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.
1
Rev. A.1 - Apr., 2008
www.anpec.com.tw