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ANPEC

APW7153A Datasheet Preview

APW7153A Datasheet

Synchronous Buck Converter

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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 110mHigh/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)
Applications
General Description
APW7153/A/B is a 3A synchronous buck converter with
integrated 110mpower 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
VIN
LCD Minitor/TV
Set-Top Box
DSL, Switch HUB
Notebook Computer
Portable Instrument
VDD PVDD
APW7153/A/B
VOUT
Pin Configuration
APW7153
APW7153
SHDN/RT 1
GND 2
LX 3
PGND 4
9
Expose
Pad
8 COMP SHDN/RT 1
7 FB
6 VDD
GND 2
LX 3
LX 4
5 PVDD PGND 5
11
Expose
Pad
10 COMP
9 FB
8 VDD
7 PVDD
6 PVDD
SOP-8P
(Top View)
TDFN3X3-10
(Top View)
APW7153A
APW7153B
EN/RT 1
GND 2
LX 3
LX 4
PGND 5
11
Expose
Pad
10 COMP
9 FB
8 POK
7 VDD
6 PVDD
SHDN/RT 1
GND 2
LX 3
LX 4
PGND 5
11
Expose
Pad
10 COMP
9 FB
8 POK
7 VDD
6 PVDD
TDFN3X3-10
(Top View)
TDFN3X3-10
(Top View)
9 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)
ANPEC reserves the right to make changes to improve reliability or manufacturSability 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.6 - Aug., 2012
www.anpec.com.tw




ANPEC

APW7153A Datasheet Preview

APW7153A Datasheet

Synchronous Buck Converter

No Preview Available !

APW7153/A/B
Ordering and Marking Information
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 (Note 1)
Symbol
Parameter
Rating
Unit
VVDD, VPVDD Input Supply Voltage
-0.3 ~ 6
V
VLX
LX to GND Voltage
>20ns pulse width
-1 ~VPVDD+0.3
V
<20ns pulse width
-3 ~VPVDD+3
V
SHDN/RT, FB, COMP, POK to GND Voltage
-0.3 ~ 6
V
PGND
PGND to GND Voltage
-0.3 ~ +0.3
V
PD
TJ
TSTG
TSDR
Power Dissipation
Junction Temperature
Storage Temperature
Maximum Lead Soldering Temperature, 10 Seconds
Internally Limited
W
150
oC
-65 ~ 150
oC
260
oC
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
θJA
θJC
Parameter
Junction-to-Ambient Resistance in Free Air (Note 2)
Junction-to-Case Resistance in Free Air (Note 3)
TDFN3x3-10
SOP-8P
TDFN3x3-10
SOP-8P
Typical Value
50
80
10
20
Unit
oC/W
oC/W
Note 2: θJA 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.
2
Rev. A.6 - Aug., 2012
www.anpec.com.tw



Part Number APW7153A
Description Synchronous Buck Converter
Maker ANPEC
Total Page 3 Pages
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APW7153A Datasheet PDF





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