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PDF A7508 Data sheet ( Hoja de datos )
| Número de pieza | A7508 | |
| Descripción | 1.3MHz MICROPOWER SYNCHRONOUS DC-DC CONVERTER BOOST | |
| Fabricantes | AiT Semiconductor | |
| Logotipo |  |
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AiT Semiconductor Inc.
www.ait-ic.com
A7508
DC-DC CONVERTER BOOST (STEP-UP)
800mA, 1.3MHz MICROPOWER SYNCHRONOUS
DESCRIPTION
The A7508 is a synchronous, fixed frequency,
step-up DC/DC converters delivering high efficiency
in a 6-lead SOT package. Capable of supplying 5V
at 800mA from a Lithium Battery input, the devices
contain an internal NMOS switch and PMOS
synchronous rectifier.
A switching frequency of 1.3MHz minimizes solution
footprint by allowing the use of tiny, low profile
inductors and ceramic capacitors. The current mode
PWM design is internally compensated, reducing
external parts count. The A7508 features automatic
shifting to power saving PFM Mode operation at
light loads. Antiringing control circuitry reduces EMI
concerns by damping the inductor in discontinuous
mode, and the devices feature low shutdown current
of under 1μA.
The A7508 is available in SOT-26 Package
FEATURES
Up to 93% Efficiency
1.3MHz Fixed Frequency Switching
Internal Synchronous Rectifier
2.5V to 5V Output Range
Automatic PFM/PWM Mode Operation
Logic Controlled Shutdown (<1μA)
Antiringing Control Minimizes EMI
Tiny External Components
Available in SOT-26 Package.
APPLICATION
MP3/4 PMP
Digital Camera
LCD Bias Voltage
Handheld Instruments
Wireless Handsets
GPS Receivers
ORDER INFORMATION
TYPICAL APPLICATION
Package Type
Part Number
SOT-26
Note
E6
A7508E6R-XXX
A7508E6VR-XXX
XXX=Output ,ADJ=Adjustable
V: Halogen free Package
R : Tape & Reel
AiT provides all RoHS products
Suffix “ V “ means Halogen free Package
Figure 1. VOUT=3.3V
REV1.1
- DEC 2011 RELEASED, AUG 2014 UPDATED -
Figure 2.VOUT>4.5V
-1-
1 page  
AiT Semiconductor Inc.
www.ait-ic.com
A7508
DC-DC CONVERTER BOOST (STEP-UP)
800mA, 1.3MHz MICROPOWER SYNCHRONOUS
TYPICAL PERFORMANCE CHARACTERISTICS
Figure1. VOUT VS Temperature
(VIN=CE=2.5V,ILOAD=30mA）
Figure2. Oscillation Frequency VS Temperature
(VIN=CE=2.5V,ILOAD=300mA)
Figure3. Load Transient Response
(VIN=CE=2.5V,VOUT=3.3V,ILOAD=0~400mA)
Figure4. Wave form in PWM Mode
(VIN=2.5V,VOUT=3.3V,ILOAD=400mA)
Figure5. Efficiency VS Output Current
REV1.1
- DEC 2011 RELEASED, AUG 2014 UPDATED -
-5-
5 Page 
AiT Semiconductor Inc.
www.ait-ic.com
IMPORTANT NOTICE
A7508
DC-DC CONVERTER BOOST (STEP-UP)
800mA, 1.3MHz MICROPOWER SYNCHRONOUS
AiT Semiconductor Inc. (AiT) reserves the right to make changes to any its product, specifications, to
discontinue any integrated circuit product or service without notice, and advises its customers to obtain the
latest version of relevant information to verify, before placing orders, that the information being relied on is
current.
AiT Semiconductor Inc.'s integrated circuit products are not designed, intended, authorized, or warranted to
be suitable for use in life support applications, devices or systems or other critical applications. Use of AiT
products in such applications is understood to be fully at the risk of the customer. As used herein may
involve potential risks of death, personal injury, or servere property, or environmental damage. In order to
minimize risks associated with the customer's applications, the customer should provide adequate design and
operating safeguards.
AiT Semiconductor Inc. assumes to no liability to customer product design or application support. AiT
warrants the performance of its products of the specifications applicable at the time of sale.
REV1.1
- DEC 2011 RELEASED, AUG 2014 UPDATED -
- 11 -
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet A7508.PDF ] | |
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