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ANPEC

APW7104A Datasheet Preview

APW7104A Datasheet

1A Synchronous Buck Regulator

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APW7104A
1.5MHz, 1A Synchronous Buck Regulator
Features
General Description
1A Output Current
Wide 2.7V~6.0V Input Voltage
Fixed 1.5MHz Switching Frequency
Low Dropout Operating at 100% Duty Cycle
Integrate Synchronous Rectifier
0.6V Reference Voltage
Current-Mode Operation with Internal
Compensation
- Stable with Ceramic Output Capacitors
- Fast Line Transient Response
Short-Circuit Protection
Over-Temperature Protection with Hysteresis
Available in SOT-23-5 Packages
Lead Free and Green Devices Available
(RoHS Compliant)
APW7104A is a 1.5MHz high efficiency monolithic syn-
chronous buck regulator. Design with current mode
scheme, the APW7104A is stable with ceramic output
capacitor. Input voltage from 2.7V to 6.0V makes the
APW7104A ideally suited for single Li-Ion battery pow-
ered applications. 100% duty cycle provides low dropout
operation, extending battery life in portable electrical
devices. The internally fixed 1.5MHz operating frequency
allows the using of small surface mount inductors and
capacitors. The synchronous switches included inside
increase the efficiency and eliminate the need of an ex-
ternal Schottky diode.
The APW7104A is available in SOT-23-5 packages.
Applications
Pin Configuration
HD STB
BT Mouse
PND Instrument
Portable Instrument
Simplified Application Circuit
APW7104A
RUN 1
GND 2
SW 3
5 FB
4 VIN
SOT-23-5 (Top View)
VIN
C1
4.7µF
(MLCC)
4 VIN
L1
2.2µH
SW 3
APW7104A
1 RUN FB 5
GND
2
R1
R2
VOUT
C2
10µF
(MLCC)
C3
(option)
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.2 - Nov., 2012
www.anpec.com.tw




ANPEC

APW7104A Datasheet Preview

APW7104A Datasheet

1A Synchronous Buck Regulator

No Preview Available !

APW7104A
Ordering and Marking Information
APW7104A
Assembly Material
Handling Code
Temperature Range
Package Code
Package Code
B : SOT-23-5
Operating Ambient Temperature Range
I : -40 to 85 oC
Handling Code
TR : Tape & Reel
Assembly Material
G : Halogen and Lead Free Device
APW7104A B : W4AX
X - 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 (Note 1)
Symbol
Parameter
Rating
Unit
VIN
Input Bias Supply Voltage (VIN to GND)
-0.3 ~ 7
V
VSW
SW to GND Voltage
> 20ns pulse width
-0.3 ~ VIN+0.3
V
< 20ns pulse width
-3 ~ VIN+3
V
RUN, FB to GND Voltage
-0.3 ~ VIN+0.3
V
PD
Power Dissipation
Maximum Junction Temperature
TSTG
Storage Temperature
TSDR
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
Parameter
Typical Value
Unit
θJA
Junction-to-Ambient Resistance in Free Air (Note 2)
SOT-23-5
250
oC/W
Note 2: θJA is measured with the component mounted on a high effective thermal conductivity test board in free air.
Recommended Operating Conditions (Note 3)
Symbol
Parameter
VIN
Input Bias Supply Voltage (VIN to GND)
VOUT
Converter Output Voltage
IOUT
Converter Output Current
L1
Converter Output Inductor
CIN
Converter Input Capacitor
COUT
Converter Output Capacitor
TA
Ambient Temperature
TJ
Junction Temperature
Note 3: Refer to the typical application circuit
Range
Unit
2.7 ~ 6
V
0.6 ~ VIN
V
0~1
A
1.0 ~ 10
µH
4.7 ~100
µF
4.7 ~100
µF
-40 ~ 85
oC
-40 ~ 125
oC
Copyright © ANPEC Electronics Corp.
2
Rev. A.2 - Nov., 2012
www.anpec.com.tw



Part Number APW7104A
Description 1A Synchronous Buck Regulator
Maker ANPEC
Total Page 3 Pages
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