PWM Controller. APW8733 Datasheet

APW8733 Controller. Datasheet pdf. Equivalent

Part APW8733
Description Dual-Phase COT Buck PWM Controller
Feature APW8733 Dual-Phase COT Buck PWM Controller with Dynamic Voltage Features General Description • Hi.
Manufacture ANPEC
Datasheet
Download APW8733 Datasheet




APW8733
APW8733
Dual-Phase COT Buck PWM Controller with Dynamic Voltage
Features
General Description
High Input Battery Voltages Range from 1.8V to The APW8733 is a dual-phase PWM control IC which
25V Input Power
provides a precision voltage regulation system for ad-
Multiform Purpose Input Voltage Collocation: VCC vanced graphic card and motherboard applications. The
= 5V / VIN = 5.5V ~ 19V for NB MXM application
integration of dual-phase power MOSFET drivers into the
Built in VREF voltage = 2.0V +1% with all controller IC and reduces the number of external parts for
temperature range
a cost and space saving power management solution.
External reference input with PWM VID Dynamic The APW8733 uses a constant on time architecture
voltage control
control, and results in excellent transient response and
Integrated Bootstrap Forward P-CH MOSFET
accurate DC voltage output in either PFM or PWM Mode.
Built in Adjustable Frequency by TON : 100KHz ~ In Pulse Frequency Mode (PFM), the APW8733 provides
800KHz range
very high efficiency over light to heavy loads with loading
modulated switching frequencies. In PWM Mode, the con-
Built in Constant On Time PWM Control with verter works nearly at constant frequency for low-noise
Current Sharing Operation
requirements. The device uses the voltage across the
Built in External Soft-Start & Soft-Stop functions low side RDS(ON) for current sensing achieves high
for output voltage
efficiency. The device integrates adjustable load line volt-
Support Single and Two phases PWM Control by age positioning (droop) and adopts low side RDS(ON) for
LGATE2 & PSI voltage setting
channel-current balance. The APW8733 also implement
Built in Programmable OCP function by Sensing a VID control operation in which the feedback voltage is
Low Side MOSFET
regulated and tracks external input reference voltage. This
Built in UVP (50%), OVP(145%) & Thermal controller protection features include over-temperature
Shutdown functions on PWM Channel
(OTP), over-voltage (OVP), under-voltage (UVP) and over-
Built in PGOOD indicator for output voltage
current protections (OCP). The device also provides a
power-on-reset function and a external programmable
Built in POR Control Scheme Implemented at 4. soft-start to prevent wrong operation and limit the input
25V ~ 4.45V range
surge current during power-on or start-up. The APW8733
Shutdown Control byEN using an External MOSFET is available in TQFN 3x3-20 packages.
TQFN 3x3-20 Package
Applications
VGA
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 - Jan., 2016
1
www.anpec.com.tw



APW8733
APW8733
Simplified Application Circuit
5.0V
PSI VCC
VREF
REFIN UGATE1
REFADJ
CLK
VID LGATE1
OUT
VCC
PGOOD
UGATE2
VSNS
LGATE2
VIN
VOUT
Ordering and Marking Information
APW8733
Assembly Material
Handling Code
Temperature
Range
Package Code
Package Code
QB: TQFN3x3-20
Operating Ambient Temperature Range
I : -40 to 85oC
Handling Code
TR : Tape & Reel
Assembly Material
G : Halogen and Lead Free Device
APW
APW8733 QB: 8733
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 Greento 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).
Copyright © ANPEC Electronics Corp.
Rev. A.1 - Jan., 2016
2
www.anpec.com.tw







@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)