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ANPEC

APW8822E Datasheet Preview

APW8822E Datasheet

System Power PWM Controller

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APW8822E
System Power PWM Controller for Notebook Computers with Charge Pump
Features
Simplified Application Circuit
Wide Input voltage Range from 6V to 25V
Provide 5 Independent Outputs with ±1.0% Accu-
racy Over-Temperature
- PWM1 Controller with Adjustable (2V to 5.5V) Out-
put
- PWM2 Controller with Adjustable (2V to 5.5V) Out-
put
- 100mA Low Dropout Regulator (LDO5) with Fixed
5V Output
- 100mA Low Dropout Regulator (LDO3) with Fixed
3.3V Output
- 270kHz Clock Signal for 15V Charge Pump (Used General Description
VOUT1 as Its Power Supply)
The APW8822E integrates dual step-down, constant-on-
Excellent Line/Load Regulations about ±1.5% Over- time, synchronous PWM controllers (that drives dual N-
Temperature Range
channel MOSFETs for each channel) and two low drop-
Built in POR Control Scheme Implemented
out regulators as well as various protections into a chip.
Constant On-Time Control Scheme with Frequency The PWM controllers step down high voltage of a battery
Compensation for PWM Mode
to generate low-voltage for NB applications. The output
Selectable Switching Frequency in PWM Mode
of PWM1 and PWM2 can be adjusted from 2V to 5.5V by
Built-in Digital Soft-Start for PWM Outputs and Soft- setting a resistive voltage-divider from VOUTx to GND.
Stop for PWM Outputs and LDO Outputs
The linear regulators provide 5V and 3.3V output for
Integrated Bootstrap Forward P-CH MOSFET
standby power supply. The linear regulators provide up
High Efficiency over Light to Full Load Range to 100mA output current. When the PWMx output voltage
(PWMs)
is higher than LDOx bypass threshold, the related LDOx
Built-in Power Good Indicators (PWMs)
regulator is shut off and its output is connected to VOUTx
Independent Enable Inputs (PWMs, LDO)
by internal switchover MOSFET. It can save power
70% Under-Voltage and 125% Over-Voltage Protec- dissipation. The charge pump circuit with 270kHz clock
tions (PWM)
Adjustable Current-Limit Protection (PWMs)
driver uses VOUT1 as its power supply to generate ap-
proximately 15V DC voltage.
- Using Sense Low-Side MOSFET’s R
DS(ON)
Over-Temperature Protection
The APW8822E provides excellent transient response
and accurate DC output voltage in either PFM or PWM
3mmx3mm Thin QFN-20 (TQFN3x3-20) package Mode. In Pulse-Frequency Mode (PFM), the APW8822E
Lead Free and Green Device Available (RoHS provides very high efficiency over light to heavy loads
Compliant)
with loading-modulated switching frequencies. The
Forced-PWM Mode works nearly at constant frequency
for low-noise requirements. The unique ultrasonic
mode maintains the switching frequency above 25KHz,
which eliminates noise in audio application.
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 - Jun., 2014
www.anpec.com.tw




ANPEC

APW8822E Datasheet Preview

APW8822E Datasheet

System Power PWM Controller

No Preview Available !

APW8822E
General Description (Cont.)
The APW8822E is equipped with accurate sourcing
and current-limit, output under-voltage output over-
voltage protections, being perfect for NB applications. A
1.4ms (typ.) digital soft-start can reduce the start-up
current. A soft-stop function actively discharges the
output capacitors by the discharge device. The
APW8822E has individual enable controls for each
PWM channels. Pulling both EN1/2 pin low shuts down
the all of outputs unless LDO3 output. The LDO3 and
LDO5 of APW8822E are always on standby power.
The APW8822E is available in a TQFN3x3-20 package.
Applications
Notebook and Sub-Notebook Computers
Portable Devices
DDR1, DDR2, and DDR3 Power Supplies
3-Cell and 4-Cell Li+ Battery-Powered Devices
Graphic Cards
Game Consoles
Telecommunications
Ordering and Marking Information
APW8822E
APW
APW8822E QB : 8822E
XXXXX
Assembly Material
Handling Code
Temperature Range
Package Code
Package Code
QB: TQFN3x3-20
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
XXXXX - Date Code
DEVICE NUMBER
ENABLE FUNCTION
SKIP MODE
ALWAYS ON-LDO
APW8822E
EN1/EN2
Auto-skip
LDO3 & LDO5
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).
Copyright © ANPEC Electronics Corp.
2
Rev. A.1 - Jun., 2014
www.anpec.com.tw



Part Number APW8822E
Description System Power PWM Controller
Maker ANPEC
Total Page 3 Pages
PDF Download

APW8822E Datasheet PDF





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