APW8822/A/B/C
System Power PWM Controller for Notebook Computers with Charge Pump
Features
•
•
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
Simplified Application Circuit
V
IN
6V~25V
V
LDO5
V
OUT1
Q1
L1
PWM1
Q2
Charge Pump
C1
D1
D2
C2
D3 C3
PWM2
Q4
ENILIM1 EN LDO ENILIM2
LDO5
LDO3
V
LDO3
V
OUT2
Q3
L2
D4
C4
V
CP
General Description
The APW8822/A/B/C integrates dual step-down, constant-
on-time, synchronous PWM controllers (that drives dual
N-channel MOSFETs for each channel) and two low drop-
out regulators as well as various protections into a chip.
The PWM controllers step down high voltage of a battery
to generate low-voltage for NB applications. The output
of PWM1 and PWM2 can be adjusted from 2V to 5.5V by
setting a resistive voltage-divider from VOUTx to GND.
The linear regulators provide 5V and 3.3V output for
standby power supply. The linear regulators provide up
to 100mA output current. When the PWMx output voltage
is higher than LDOx bypass threshold, the related LDOx
regulator is shut off and its output is connected to VOUTx
by internal switchover MOSFET. It can save power
dissipation. The charge pump circuit with 270kHz clock
driver uses VOUT1 as its power supply to generate ap-
proximately 15V DC voltage.
The APW8822/A/B/C provides excellent transient
response and accurate DC output voltage in either PFM
or PWM Mode. In Pulse-Frequency Mode (PFM), the
APW8822/A/B/C provides very high efficiency over light
to heavy loads 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.
•
•
•
•
•
•
•
•
•
•
•
•
•
•
VOUT1 as Its Power Supply)
Excellent Line/Load Regulations about ±1.5% Over-
Temperature Range
Built in POR Control Scheme Implemented
Constant On-Time Control Scheme with Frequency
Compensation for PWM Mode
Selectable Switching Frequency in PWM Mode
Built-in Digital Soft-Start for PWM Outputs and Soft-
Stop for PWM Outputs and LDO Outputs
Integrated Bootstrap Forward P-CH MOSFET
High Efficiency over Light to Full Load Range
(PWMs)
Built-in Power Good Indicators (PWMs)
Independent Enable Inputs (PWMs, LDO)
70% Under-Voltage and 125% Over-Voltage Protec-
tions (PWM)
Adjustable Current-Limit Protection (PWMs)
- Using Sense Low-Side MOSFET’ R
DS(ON)
s
Over-Temperature Protection
3mmx3mm Thin QFN-20 (TQFN3x3-20) package
Lead Free and Green Device Available (RoHS
Compliant)
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.2 - Nov., 2012
1
www.anpec.com.tw
APW8822/A/B/C
General Description (Cont.)
The APW8822/A/B/C is equipped with accurate sourc-
ing 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
APW8822/A/B 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 APW8822A/C are always on standby power.
The APW8822/A/B/C 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
APW8822
APW8822A
APW8822B
APW8822C
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
Assembly Material
Handling Code
Temperature Range
Package Code
APW8822 QB :
APW
8822
XXXXX
APW
8822A
XXXXX
XXXXX - Date Code
APW8822A QB :
XXXXX - Date Code
APW8822B QB :
APW
8822B
XXXXX
XXXXX - Date Code
APW8822C QB :
APW
8822C
XXXXX
XXXXX - Date Code
DEVICE NUMBER
APW8822QBI
APW8822AQBI
APW8822BQBI
APW8822CQBI
ENABLE FUNCTION
EN1/EN2
ENLDO/ENILIM1/ENILIM2
EN1/EN2
EN1/EN2
SKIP MODE
Auto-skip
Auto-skip
Ultra-sonic
Auto-skip
ALWAYS ON-LDO
LDO3
LDO3 & LDO5
LDO3
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.
Rev. A.2 - Nov., 2012
2
www.anpec.com.tw
APW8822/A/B/C
Pin Configuration
UGATE1
PHASE1
BOOT1
VCLK
UGATE1
16
15
14
Bottom View
APW8822A
13
12
11
6
NC
7
POK
8
PHASE2
9
BOOT2
10
UGATE2
LGATE1
BYP
LDO5
VIN
LGATE2
PHASE1
18
ENLDO
BOOT1
17
VCLK
19
EN1
20
ILIM1
FB1
LDO3
FB2
ILIM2
1
2
3
4
5
6
EN2
19
18
17
16
15
14
LGATE1
BYP
LDO5
VIN
LGATE2
ENILIM1
FB1
LDO3
FB2
ENILIM
2
1
2
3
4
5
20
APW8822
Bottom View
APW8822B
APW8822C
13
12
11
7
POK
8
PHASE2
9
BOOT2
10
UGATE2
TQFN 3X3-20
Top View
TQFN 3X3-20
Top View
= GND and Thermal Pad (connected to GND plane for better hat dissipation)
Absolute Maximum Ratings
Symbol
V
IN
V
BOOT
V
BOOT-GND
UGATE Voltage (UGATE to PHASE)
V
UG-PHASE
LGATE Voltage (LGATE to GND)
V
LG-GND
PHASE Voltage (PHASE to GND)
V
PHASE
Input Power Voltage (VIN to GND)
(Note 1)
Rating
-0.3 ~ 28
-0.3 ~ 7
<20ns pulse width
>20ns pulse width
<20ns pulse width
>20ns pulse width
<20ns pulse width
>20ns pulse width
-5 ~ 42
-0.3 ~ 35
-5 ~ V
BOOT
+0.3
-0.3 ~ V
BOOT
+0.3
-5 ~ V
LDO5
+0.3
-0.3 ~ V
LDO5
+0.3
-5 ~ 35
-0.3 ~ 28
-0.3 ~ 6
150
-65 ~ 150
260
Unit
V
V
V
Parameter
BOOT Supply Voltage (BOOT to PHASE)
BOOT Supply Voltage (BOOT to GND)
V
V
<20ns pulse width
>20ns pulse width
All Other Pins (LDOx, FBx, VOUTx, LDO5, LDO3, REF, VCLK, EN
LDO, ENILIMx to GND)
Maximum Junction Temperature
Storage Temperature
Maximum Lead Soldering Temperature, 10 Seconds
V
V
o
o
o
T
J
T
STG
T
SDR
C
C
C
Note1: Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are
stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under "recom-
mended operating conditions" is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device
reliability.
Copyright
©
ANPEC Electronics Corp.
Rev. A.2 - Nov., 2012
3
www.anpec.com.tw
APW8822/A/B/C
Thermal Characteristics
(Note 2)
Symbol
θ
JA
θ
JC
Parameter
Thermal Resistance - Junction to Ambient
Thermal Resistance - Junction to Case
Typical Value
95
60
Unit
o
C/W
Note 2:
θ
JA
is measured with the component mounted on a high effective thermal conductivity test board in free air. The thermal pad
of package is soldered directly on the PCB.
Recommended Operating Conditions
Symbol
V
IN
V
OUT1
V
OUT2
C
IN
C
LDO
T
A
T
J
Parameter
PWM1/2 Converter Input Voltage
PWM1 Converter Output Voltage
PWM2 Converter Output Voltage
PWM1/2 Converter Input Capacitor (MLCC)
LDO Output Capacitor (MLCC)
Ambient Temperature
Junction Temperature
Range
6 ~ 25
2 ~ 5.5
2 ~ 5.5
10 ~
1.0 ~
-40 ~ 85
-40 ~ 125
Unit
V
V
V
µF
µF
o
o
C
C
Electrical Characteristics
Refer to the typical application circuits. These specifications apply over V
IN
=12V and T
A
= -40 ~ 85 °C, unless otherwise
specified. Typical values are at T
A
=25°C.
Symbol
INPUT SUPPLY POWER
Supply current1, VOUT1=0V,
EN1=EN2=5V, VFB1 = VFB2 = 2.05V
Supply current2, VOUT1=5V,
EN1=EN2=5V, V
FB1
= V
FB2
= 2.05V,
P
VIN
+P
LDO5
I
VN
VIN Supply Current
Standby current1, VOUT1=0V,
EN1=EN2=0V (For APW8822/B)
Standby current2, VOUT1=0V,
EN1=EN2=0V (For APW8822A/C)
Shutdown current, ENLDO=0V,
ENILIMx=0V (For APW8822A)
UNDER-VOLTAGE LOCK OUT PROTECTION (UVLO)
LDO5 UVLO threshold
Rising Edge
Hysteresis
LDO3 UVLO threshold
Rising Edge
Hysteresis
4.1
-
3.0
-
4.2
0.1
3.15
0.8
4.3
-
3.3
-
V
V
V
V
-
0.86
1.2
mA
Parameter
Test Conditions
Min.
APW8822
Typ.
Max.
Unit
-
5
7
mW
-
-
80
µA
-
-
180
20
245
40
Copyright
©
ANPEC Electronics Corp.
Rev. A.2 - Nov., 2012
4
www.anpec.com.tw
APW8822/A/B/C
Electrical Characteristics
Refer to the typical application circuits. These specifications apply over V
IN
=12V and T
A
= -40 ~ 85 °C, unless otherwise
specified. Typical values are at T
A
=25°C.
Symbol
Parameter
Test Conditions
Min.
UNDER-VOLTAGE LOCK OUT PROTECTION (UVLO)
Rising threshold1, LDO3 enable
Rising threshold1_A/C, LDO3 &
LDO5 enable (For APW8822A/C)
Rising threshold2, LDO5 enable
VIN POR threshold
Falling threshold2, PWMx shutdown
with soft stop.
When PWMx soft stop is complete,
LDO5 will begin to shutdown
Falling threshold1, LDOx shutdown
with soft stop
VOUT1, VOUT2
T
A
= -40
o
C to 85
o
C
V
FBX
=2.0V, T
A
=25
o
C
ENx High to V
OUT
95% Regulation,
LDO5=5V
ENx low to V
FBX
<0.1V
V
IN
=20V, PWM1=5V
V
IN
=20V, PWM2=3.33V
-
-
-
3.8
3.8
5.1
-
-
-
V
V
V
APW8822
Typ.
Max.
Unit
-
5.0
-
V
-
3.7
-
V
PWM CONTROLLERS
Output Voltage Adjust Range
V
FB
I
FB
T
SS
FBx Reference Voltage
FBx input current
Soft-Start Ramp Time
Soft-Stop Time
F
SW1
F
SW2
PWM1 Switching Frequency
PWM2 Switching Frequency
UGATEx Minimum Off-Time
LOW DROUPUT LINEAR REGULATORS (LDO5/LDO3)
LDO5 Output Voltage
LDO3 Output Voltage
V
THBYP5
LDO5 Bypass Threshold for
VOUT1-to-LDO5 Switch On
VOUT1-to-LDO5 Switch On Resistance
LDOx Current Limit
LDOx Discharge On Resistance
CHARGE PUMP CLOCK
V
CLKH
V
CLKL
F
CLK
High level voltage
Low level voltage
Clock frequency
I
VCLK
=-10mA, LDO5=5V, T
A
=25
o
C
I
VCLK
=10mA, LDO5=5V, T
A
=25 C
T
A
=25
o
C
-
o
2
1.98
-20
-
-
240
280
200
-
2.0
-
1.4
1.7
300
355
350
5.5
2.02
20
-
-
360
430
500
V
V
nA
ms
ms
kHz
ns
VOUT1=GND, 6V<V
IN
<25V,
0<I
LDO5
<100mA
VOUT2=GND, 6V<V
IN
<25V,
0<I
LDO3
<100mA
VOUT1 Regulation Voltage Rising
Hysteresis
VOUT1=5V, 50mA
VOUTx=GND, LDOx = GND
I
LDOX
=5mA
4.8
3.2
4.55
0.15
5.0
3.33
4.7
0.25
1.5
250
50
5.2
3.46
4.85
0.3
3
350
100
V
V
V
Ω
mA
Ω
-
150
-
-
4.92
0.06
270
-
-
-
V
kHz
PWM1/2 PROTECTIONS
Over Voltage Protection Threshold
Over Voltage Fault Propagation Delay
Current Limit Current Source
V
FBX
Rising
Delta voltage=10mV
V
ILIMx
=1V, T
A
= 25
o
C
On the basis of 25
o
C
5
120
-
9
-
125
3
10
4500
130
-
11
-
%
µs
µA
ppm/
o
C
Copyright
©
ANPEC Electronics Corp.
Rev. A.2 - Nov., 2012
www.anpec.com.tw
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