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ANPEC

APW8745 Datasheet Preview

APW8745 Datasheet

High Input Voltage PWM Converter

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APW8745
High Input Voltage PWM Converter With Low Iq
Features
General Description
Adjustable Output Voltage from +0.8V to +12V
- 0.8V Reference Voltage
- +1%Accuracy over Temperature
Operates from An Input Battery Voltage Range of
+2.7V to +28V
15A Peak Output Current
Power-On-Reset Monitoring on VCC pin
Excellent line and load transient responses
PFM mode for increased light load efficiency
Programmable PWM Frequency from 100kHz to
1000kHz
Integrated 18mΩ at VCC=5V N-Channel MOSFET
For High Side
Integrated 5mΩ at VCC=5V N-Channel MOSFET
For Low Side
Integrated Bootstrap Forward P-CH MOSFET
External Adjustable Soft-Start and Soft-Stop
Support Low Power Mode
Power Good Monitoring
70% Under-Voltage Protection
125% Over-Voltage Protection
Current-Limit Protection
- Using Sense Low-Side MOSFET’s RDS(ON)
Over-Temperature Protection
TQFN-22A 4mmx4mm package
Lead Free and Green Device Available (RoHS Co-
mpliant)
The APW8745 is a synchronous, step-down converter
with integrated 18mΩ N-channel High-Side MOSFET and
5mΩ Low-Side MOSFET. The APW8745 steps down high
voltage to generate low-voltage chipset or RAM supplies in
notebook computers.
The APW8745 provides excellent transient response and
accurate DC voltage output in either PFM or PWM Mode.
In Pulse Frequency Mode (PFM), the APW8745 provides
very high efficiency over light to heavy loads with loading-
modulated switching frequencies.
The APW8745 is equipped with accurate current-limit,
output under-voltage, and output over-voltage protections,
perfect for various applications. A Power-On-Reset function
monitors the voltage on VCC to prevent wrong operation
during power-on. The APW8745 has external adjustable
soft-start and built-in an integrated output discharge meth-
od for soft stop. A soft-start ramps up the output voltage
with programmable timing to reduce the start-up current.
A soft-stop function actively discharges the output capaci-
tors.
The APW8745 is available in TQFN4x4-22A (Power PAK).
Applications
Notebook
● Mother Board
● Table PC
● Hand-Held Portable
● AIO PC
Set-top boxes
● LCD TV
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise cus-
tomers to obtain the latest version of relevant information to verify before placing orders.
CopyrightANPEC Electronic Corp.
1
Rev. A.2 - Nov., 2019
www.anpec.com.tw




ANPEC

APW8745 Datasheet Preview

APW8745 Datasheet

High Input Voltage PWM Converter

No Preview Available !

APW8745
Simplified Application Circuit
VCC
EN
RPOK
POK
VIN
H/L
LPM
LX
CSS
SS
VIN
LOUT VOUT
COUT
APW8745
Ordering and Marking Information
APW8745
Assembly Material
Handling Code
Temperature Range
Package Code
Package Code
QB: TQFN4x4-22A
Operating Ambient Temperature Range
I : -40 to 85 °C
Handling Code
TR : Tape & Reel
Lead Free Code
L : Lead Free Device G : Halogen and Lead Free Device
APW8745 QB :
APW8745
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
POK 1
EN 2
LPM 3
VIN
AGND 4
FB 5
TON 6
17 LX
16 LX
15 PGND
LX
14 PGND
13 PGND
12 PGND
TDFN 4x4 -22 (TOP VIEW)
= Exposed and Thermal Pad
CopyrightANPEC Electronic Corp.
2
Rev. A.2 - Nov., 2019
www.anpec.com.tw



Part Number APW8745
Description High Input Voltage PWM Converter
Maker ANPEC
Total Page 3 Pages
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APW8745 Datasheet PDF





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