APW7153/A/B
3A 5V 2MHz Synchronous Buck Converter
Features
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
High Efficiency up to 95%
- PFM/PWM Mode Operation
Adjustable Output Voltage from 0.8V to VIN
Integrated 110mΩ High/Low Side MOSFET
Programmable Switching Frequency: 300kHz to
2MHz
Low Dropout Operation: 100% Duty Cycle
Stable with Low ESR Capacitors
Power-On-Reset Detection on VDD and PVDD
Integrate Soft-Start and Soft-Off
Over-Temperature Protection
Over-Voltage Protection
Under-Voltage Protection
High/Low Side Current-Limit
Power Good Indicator (APW7153A/B)
Enable/Shutdown Function
Small TDFN3x3-10 and SOP-8P Packages
Lead Free and Green Devices Available
(RoHS Compliant)
General Description
APW7153/A/B is a 3A synchronous buck converter with
integrated 110mΩ power MOSFETs. The APW7153/A/B
is designed with a current-mode control scheme; it can
convert wide input voltage of 2.6V to 5.5V to the output
voltage adjustable from 0.8V to 5.5V to provide excellent
output voltage regulation.
The APW7153/A/B is equipped with an PFM/PWM mode
operation. At light load, the IC operates in the PFM mode
to reduce the switching losses. At heavy load, the IC works
in PWM. At PWM mode, the switching frequency is set by
the external resistor.
The APW7153/A/B is also equipped with Power-on-reset,
soft-start, soft-stop, and whole protections (under-voltage,
over-voltage, over-temperature and current-limit) into a
single package.
This device, available TDFN3x3-10 and SOP-8P provides
a very compact system solution external components and
PCB area.
Simplified Application Circuit
V
IN
Applications
•
•
•
•
•
LCD Minitor/TV
Set-Top Box
DSL, Switch HUB
Notebook Computer
Portable Instrument
APW7153/A/B
V
DD
P
VDD
V
OUT
Pin Configuration
APW7153
SHDN/RT 1
GND 2
LX 3
PGND 4
9
Expose
Pad
8 COMP
SHDN/RT 1
GND 2
7 FB
LX 3
6 VDD
LX 4
5 PVDD
PGND 5
APW7153
11
Expose
Pad
10 COMP
9 FB
8 VDD
7 PVDD
6 PVDD
APW7153A
EN/RT 1
GND 2
LX 3
LX 4
PGND 5
11
Expose
Pad
APW7153B
11
Expose
Pad
10 COMP
9 FB
8 POK
7 VDD
6 PVDD
10 COMP
SHDN/RT 1
GND 2
9 FB
LX 3
8 POK
LX 4
7 VDD
PGND 5
6 PVDD
SOP-8P
(Top View)
9
TDFN3X3-10
(Top View)
TDFN3X3-10
(Top View)
TDFN3X3-10
(Top View)
The pin 2 and 4 must be connected to the pin 9 (Exposed Pad)
11 The pin 2 and 5 must be connected to the pin 11 (Exposed Pad)
S
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.6 - Aug., 2012
1
www.anpec.com.tw
APW7153/A/B
Ordering and Marking Information
APW7153/A/B
Assembly Material
Handling Code
Temperature Range
Package Code
APW
7153
XXXXX
APW7153
XXXXX
APW
7153A
XXXXX
APW
7153B
XXXXX
Package Code
QB : TDFN3x3-10 KA : SOP-8P
Operating Ambient Temperature Range
I : -40 to 85
o
C
Handling Code
TR : Tape & Reel
Assembly Material
G : Halogen and Lead Free Device
XXXXX - Date Code
APW7153/A/B QB:
APW7153 KA:
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).
Absolute Maximum Ratings
Symbol
V
VDD
, V
PVDD
V
LX
Input Supply Voltage
LX to GND Voltage
(Note 1)
Rating
-0.3 ~ 6
>20ns pulse width
<20ns pulse width
-1 ~V
PVDD
+0.3
-3 ~V
PVDD
+3
-0.3 ~ 6
-0.3 ~ +0.3
Internally Limited
150
-65 ~ 150
260
Unit
V
V
V
V
V
W
o
o
o
Parameter
SHDN/RT, FB, COMP, POK to GND Voltage
PGND
P
D
T
J
T
STG
T
SDR
PGND to GND Voltage
Power Dissipation
Junction Temperature
Storage Temperature
Maximum Lead Soldering Temperature, 10 Seconds
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.
Thermal Characteristics
Symbol
θ
JA
Parameter
Junction-to-Ambient Resistance in Free Air
(Note 2)
Typical Value
TDFN3x3-10
SOP-8P
50
80
10
20
Unit
o
C/W
θ
JC
Junction-to-Case Resistance in Free Air
(Note 3)
TDFN3x3-10
SOP-8P
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 exposed pad
of TDFN3x3-10 and SOP-8P is soldered directly on the PCB.
Note 3: The case temperature is measured at the center of the exposed pad on the underside of the TDFN3x3-10 and SOP-8P
packages.
Copyright
©
ANPEC Electronics Corp.
Rev. A.6 - Aug., 2012
2
www.anpec.com.tw
APW7153/A/B
Recommended Operating Conditions
(Note 4)
Symbol
V
VDD
V
PVDD
V
OUT
I
OUT
T
A
T
J
Parameter
Control and Driver Supply Voltage
Input Supply Voltage
Converter Output Voltage
Converter Output Current
Ambient Temperature
Junction Temperature
Range
2.6~ 5.5
1. 5~5.5
0.8~5.5
0~3
-40 ~ 85
-40 ~ 125
Unit
V
V
V
A
o
o
C
C
Note 4: Refer to the typical application circuit.
Electrical Characteristics
Unless otherwise specified, these specifications apply over V
VDD
=V
PVDD
=3.3V, T
A
= -40 ~ 85
o
C. Typical values are at T
A
=25
o
C.
Symbol
SUPPLY CURRENT
I
VDD
VDD Supply Current
V
FB
=1V
SHDN/RT=VDD
SHDN/RT=GND
-
-
-
460
-
-
-
1
10
µA
µA
µA
Parameter
Test Conditions
Min.
APW7153/A/B
Typ.
Max.
Unit
I
VDD_SDH
VDD Shutdown Supply Current
I
VDD_SDL
VDD Shutdown Supply Current
POWER-ON-RESET (POR)
VDD POR Voltage Threshold
VDD Debounce Time
VDD POR Hysteresis
PVDD POR Voltage Threshold
PVDD POR Debounce
PVDD POR Hysteresis
REFERENCE VOLTAGE
V
REF
Reference Voltage
V
IN
Rising
2.3
-
0.1
1.5
-
-
2.4
100
0.2
1.6
10
50
2.5
-
0.3
1.7
-
-
V
µs
V
V
µs
mV
Regulated on FB APW7153/B
pin
APW7153A
T
J
=25°C, I
OUT
=10mA, V
DD
=5V
I
OUT
=10mA~3A, V
DD
=2.6~5V
-
-
-0.5
-0.8
0.8
0.5
-
-
-
-
+0.5
+0.8
V
%
%
Output Voltage Accuracy
OSCILLATOR AND DUTY CYCLE
F
OSC
Oscillator Frequency
Oscillator Frequency
Maximum Converter’ Duty
s
Minimum on Time
POWER MOSFET
High Side P-MOSFET Resistance
Low Side N-MOSFET Resistance
High/Low Side MOSFET Leakage
Current
0.3
R
T
=332kΩ
0.8
-
-
-
1
100
90
2
1.2
-
-
MHz
MHz
%
ns
I
LX
=0.5A, T
A
=25°C
I
LX
=0.5A, T
A
=25°C
-
-
-
110
110
-
160
160
10
mΩ
mΩ
µA
Copyright
©
ANPEC Electronics Corp.
Rev. A.6 - Aug., 2012
3
www.anpec.com.tw
APW7153/A/B
Electrical Characteristics (Cont.)
Unless otherwise specified, these specifications apply over V
VDD
=V
PVDD
=3.3V, T
A
= -40 ~ 85
o
C. Typical values are at T
A
=25
o
C.
Symbol
Parameter
Test Conditions
Min.
CURRENT-MODE PWM CONVERTER
Gm
Error Amplifier Transconductance
Error Amplifier DC Gain
Current Sense Transresistance
T
D
Dead Time
(Note 5)
COMP=NC
-
-
-
-
550
80
500
20
-
-
-
-
µA/V
dB
mΩ
ns
APW7153/A/B
Typ.
Max.
Unit
PROTECTIONS
I
LIM
T
OTP
High Side MOSFET Current-Limit
Over-Temperature Trip Point
(Note 5)
Over-Temperature Hysteresis
Over-Voltage Protection Threshold
Under-Voltage Protection Threshold
Low Side MOSFET Current-Limit
SOFT-START, ENABLE AND INPUT CURRENTS
Soft-Start Time
V
SHDN
SHDN Shutdown Threshold
V
SHDN
> SHDN shutdown Threshold,
IC shutdown
POK in from Lower
(POK Goes High)
POK Low Hysteresis
(POK Goes High)
POK in from Higher
(POK Goes High)
POK High Hysteresis
(POK Goes Low)
Power Good Pull Low Resistance
Power Good Debounce
1
-
85
-
110
-
-
-
1.5
V
VDD
-0.9
87.5
5
112.5
5
100
0.5
2
V
VDD
-0.4
90
-
115
-
-
-
ms
V
%V
OUT
%V
OUT
%V
OUT
%V
OUT
Ω
ms
From Drain to Source
Peak Current
4.0
-
-
119
44
0.7
4.5
160
50
125
50
-
5.0
-
-
131
56
1.6
A
°C
°C
%V
OUT
%
A
POK Threshold
Note 5: Guarantee by design.
Copyright
©
ANPEC Electronics Corp.
Rev. A.6 - Aug., 2012
4
www.anpec.com.tw
APW7153/A/B
Typical Operating Characteristics
Refer to the application circuit in the section “Typical Application Circuits”, V
IN
=5V, T
A
=25
o
C, unless otherwise specified.
Oscillator Frequency vs. RT Resistance
2
Oscillator Frequency, F
OSC
(MHz)
1.8
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
0
200
400
600
800 1000 1200 1400
RT=1.3M for 300kHz
Efficiency vs. Output Current
100
95
90
Efficiency (%)
RT=330k for 1MHz
85
80
75
70
65
60
55
50
0.01
0.1
1
V
IN
=5V
V
OUT
=1.8V
R
T
=330k
10
RT Resistance, R
RT
(kΩ)
Output Current, I
OUT
(A)
Efficiency vs. Output Current
100
90
Efficiency (%)
85
80
75
70
65
60
55
50
0.01
V
IN
=5V
V
OUT
=3.3V
R
T
=330k
Reference Voltage vs. Supply Voltage
820
Reference Voltage, V
REF
(mV)
815
810
805
800
795
790
785
780
2
2.5
3
3.5
4
4.5
Supply Voltage, V
VDD
(V)
5
5.5
95
0.1
1
Output Current, I
OUT
(A)
10
No Switch Quiescent Current
vs. Supply Voltage
No Switch Quiescent Current, I
VDD
(µA)
450
Peak Current Limit, I
LIM
(A)
6
5
4
3
2
1
0
Peak Current-Limit vs. Supply Voltage
400
350
300
250
200
2
2.5
3
3.5
4
4.5
5
5.5
Supply Voltage, V
VDD
(V)
2.5
3
3.5
4
4.5
5
5.5
Supply Voltage, V
VDD
(V)
Copyright
©
ANPEC Electronics Corp.
Rev. A.6 - Aug., 2012
5
www.anpec.com.tw
京公网安备 11010802033920号
EEWORLD
