APW7079 반도체 회로 부품 판매점
Low-Supply-Current Synchronous Step-up DC-DC Converter
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 ANPEC |
APW7079
Low-Supply-Current Synchronous Step-up DC-DC Converter
Features
• 0.9V Typical Start-up Input Voltage
• 11µA Typical No Load Quiescent Current
• PFM Operation
• High Efficiency up to 92%
• Fixed 1.8V, 2.6V, 2.8V, 3V, 3.3V, 3.8V, 4.5V or 5V
Output Voltage
• 600mA Internal Switch Current
• Internal Synchronous Rectifier
• SOT-89 Package
• Lead Free and Green Devices Available
(RoHS Compliant)
Applications
• Toy
• Wireless Mouse
• Portable Instrument
Pin Configuration
SOT 89
General Description
The APW7079 is a compact, PFM mode, and step-up
DC-DC converter with low quiescent current. The inter-
nal synchronous rectifier reduces cost and PCB space
by eliminating the need for an external Schottky diode.
Low on-resistance of the internal switches improves the
efficiency up to 92%. The start-up voltage is guaranteed
below 1V. After start-up, the device can operate with input
voltage down to 0.7V. The APW7079 is suitable for por-
table battery-powered applications. Consuming only 11µA
quiescent current and an optimized control scheme al-
lows the device to operate at very high efficiency over the
entire load current range.
100
90
80
70
60
50
40
30
20
10
0
0.1
Efficiency vs. Output Current
VIN=0.9V
VIN=1.0V
VIN=1.2V
VIN=2.4V
VIN=1.5V
APW7079-30
1 10 100 1000
Top View
Simplified Application Circuit
VIN IIN
L1
22µH
C1
22µF
LX VOUT
GND
IOUT VOUT
C2
47µF
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.4 - Jun., 2009
1
www.anpec.com.tw
APW7079
79
Ordering and Marking Information
APW7079
APW7079-18D: APW7079
XXXXX18
Assembly Material
Handling Code
Temperature Range
Package Code
Voltage Code
XXXXX - Date Code, 18: 1.8V
Package Code
D : SOT-89
Operating Ambient Temperature Range
I : -40 to 85oC
Handling Code
TR : Tape & Reel
Assembly Material
G : Halogen and Lead Free Device
Voltage Code
18: 1.8V 26: 2.6V 28: 2.8V
33: 3.3V 38: 3.8V 45: 4.5V
30: 3.0V
50: 5.0V
APW7079-26D: APW7079 XXXXX - Date Code, 26: 2.6V
XXXXX26
APW7079-28D: APW7079
XXXXX28
XXXXX - Date Code, 28: 2.8V
APW7079-30D: APW7079 XXXXX - Date Code, 30: 3.0V
XXXXX30
APW7079-33D: APW7079 XXXXX - Date Code, 33: 3.3V
XXXXX33
APW7079-33D:
APW7079
XXXXX38
XXXXX - Date Code, 38: 3.8V
APW7079-45D: APW7079 XXXXX - Date Code, 45: 4.5V
XXXXX45
APW7079-50D: APW7079 XXXXX - Date Code, 50: 5.0V
XXXXX50
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-020C 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
VOUT
Output Voltage (VOUT to GND)
-0.3 ~ 6
V
VLX LX to GND Voltage
-0.3 ~ VOUT+1
V
TSTG
Storage Temperature
-65 ~ 150
C
TSDR Maximum Lead Soldering Temperature, 10 Seconds
260 C
Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
Thermal Characteristics
Symbol
Parameter
Typical Value
Thermal Resistance -Junction to Ambient (Note 2)
θJA
SOT-89
180
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, 4)
Unit
oC/W
Symbol
Parameter
VOUT
VIN
VLX
IOUT
TA
Output Voltage (VOUT to GND)
Converter Supply Voltage
LX to GND Voltage
Converter Output Current
Ambient Temperature
TJ Junction Temperature
Note 3: Refer to the typical application circuit
Note 4: Refer to “Application Information” for detail value.
Range
0.7 ~ 5.5
0.3 ~ VOUT+1
-0.3 ~ VOUT+0.3
0 ~ 0.9 x IOUT(MAX)
-40 ~ 85
-40 ~ 125
Unit
V
V
V
A
°C
°C
Copyright © ANPEC Electronics Corp.
Rev. A.4 - Jun., 2009
2
www.anpec.com.tw
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제조업체: ANPEC
( anpec )
APW7079 converter
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[ APW7079.PDF ]
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국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
전력반도체 문의 : 010-3582-2743
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