Step-Up Converter. APW7237 Datasheet

APW7237 Converter. Datasheet pdf. Equivalent

Part APW7237
Description Step-Up Converter
Feature APW7237 1.5MHz, High Efficiency, Step-Up Converter with Internal FET Switch Features General Desc.
Manufacture ANPEC
Datasheet
Download APW7237 Datasheet




APW7237
APW7237
1.5MHz, High Efficiency, Step-Up Converter with Internal FET Switch
Features
General Description
Wide 2.7V to 6V Input Voltage Range
The APW7237 is a fixed switching frequency (1.5MHz
Built-in 0.2N-Channel MOSFET
Built-in Soft-Start
High Efficiency up to 90%
<1µA Quiescent Current During Shutdown
Current-Mode Operation
- Stable with Ceramic Output Capacitors
- Fast Transient Response
Current-Limit Protection
typical), current-mode, step-up regulator with an inte-
grated N-channel MOSFET. The device allows the usage
of small inductors and output capacitors for portable
devices. The current-mode control scheme provides fast
transient response and good output voltage accuracy.
The APW7237 includes under-voltage lockout, current-
limit, and over-temperature shutdown preventing dam-
age in the event of an output overload.
Over-Temperature Protection with Hysteresis
100
Available in a TSOT-23-5A and TDFN2x2-6 Pack-
age 80
Lead Free and Green Devices Available
(RoHS Compliant)
60 VIN=3.3V
Applications
40 VIN=5V
Cell Phone and Smart Phone
PDA, PMP, MP3
Digital Camera
Boost Regulators
20
0
0.01
VOUT=12V
0.1
Supply Voltage (V)
1
Pin Configuration
Simplified Application Circuit
LX 1
GND 2
FB 3
5 VIN
4 EN
TSOT-23-5A
Top View
VIN 1
GND 2
EN 3
6 LX
5 GND
4 FB
TDFN2x2-6
Top View
VIN
5V
C1
4.7µF
ON
OFF
L1
10µH
VIN LX
GND
APW7237
EN FB
VOUT
R1
1.2M
12V
C2
4.7µF
R2
137k
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 - Dec., 2012
1
www.anpec.com.tw



APW7237
APW7237
Ordering and Marking Information
Assembly Material
G : Halogen and Lead Free Device
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
VLX
VEN
TJ
TSTG
TSDR
VIN Pin to GND
LX Pin to GND
EN Pin to GND
Maximum Junction Temperature
Storage Temperature Range
Maximum Lead Soldering Temperature, 10 Seconds
-0.3 to 7
-0.3 to 22
-0.3 to VIN
150
-65 to 150
260
V
V
V
°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
θJA
Parameter
Junction-to-Ambient Resistance in free air (Note 2)
θJC Junction-to-Case Resistance
TSOT-23-5A
TDFN2x2-6
TSOT-23-5A
TDFN2x2-6
Typical Value
220
165
120
20
Unit
oC/W
oC/W
oC/W
oC/W
Note 2: θJA is measured with the component mounted on a high effective thermal conductivity test board in free air.
Copyright © ANPEC Electronics Corp.
Rev. A.2 - Dec., 2012
2
www.anpec.com.tw







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