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PDF HX3001 Data sheet ( Hoja de datos )
| Número de pieza | HX3001 | |
| Descripción | Synchronous Boost DC/DC Regulator | |
| Fabricantes | HEXIN | |
| Logotipo |  |
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HXH3X0100101
Synchronous Boost DC/DC Regulator
Features
Up to 94% Efficiency
：Low voltage start-up 0.9V
Shut-down current: < 1µA
： ～Input voltage 0.9V 4.4V
： ～Output voltage 2.5V 4.3V (Up to 5V with
Schottky)
ΩLow switch on resistance RDS(ON), Internal
switch: 0.35
1.4MHz fixed frequency switching
Automatic PWM/PFM mode switching
High switch on current: 0.9A
Low profile SOT-23-6 package (lead-free
packaging is now available)
Applications
Description
The HX3001 is high efficiency synchronous,
PWM step-up DC/DC converters optimized to
provide a high efficient solution to medium
power systems. The devices work under the
input voltage between 0.9V and 4.4V with a
1.4MHz fixed frequency switching. These
features minimize overall solution footprint by
allowing the use of tiny, low profile inductors
and ceramic capacitors. Automatic PWM/PFM
mode switching at light load saves power and
improves efficiency.
The HX3001 is capable of supplying an output
voltage between 2.5V and 4.3V, the internal
synchronous switch is desired to provide high
efficiency without Schottky.
Digital cameras and MP3
Palmtop computers / PDAs
Cellular phones
Wireless handsets and DSL modems
PC cards
Portable media players
The devices also featured providing up to
260mA from a single AA cell input or up to
600mA from a 2-cell AA with a 3V/3.3V output.
The HX3001 regulators are available in the
industry standard SOT-23-6 power packages
(or upon request).
Order Information
① ②HX3001 -
SYMBOL
①
②
DESCRIPTION
Denotes Output voltage:
A : Adjustable Output
Denotes Package Types:
F: SOT-23-6
www.szkingfrom.com
TEL:13923795851
1hong
Free Datasheet http://www.datasheet4u.com/
1 page  
HX3001
Application Information
SW (Pin 1): Switch Pin. Connect inductor
between SW and VIN. Keep these PCB trace
lengths as short and wide as possible to reduce
EMI and voltage overshoot.
GND (Pin 2): Signal and Power Ground.
Provide a short direct PCB path between GND
and the (–) side of the output capacitor(s).
FB (Pin 3): Feedback Input to the gm Error
Amplifier. Connect resistor divider tap to this pin.
The output voltage can be adjusted from 2.5V
to 5V by: VOUT = 1.212V • [1 + (R1/R2)]
EN (Pin 4): Logic Controlled Shutdown Input.
EN = High: Normal free running operation,
1.4MHz typical operating frequency. EN = Low:
Shutdown, quiescent current <1µA. Output
capacitor can be completely discharged through
the load or feedback resistors.
VOUT (Pin 5): Output Voltage Sense Input and
Drain of the Internal Synchronous Rectifier
MOSFET. Bias is derived from VOUT. PCB trace
length from VOUT to the output filter capacitor(s)
should be as short and wide as possible.
VIN (Pin 6): Battery Input Voltage. The device
gets its start-up bias from VIN. Once VOUT
exceeds VIN, bias comes from VOUT. Thus, once
started, operation is completely independent
from VIN. Operation is only limited by the output
power level and the battery’s internal series
resistance.
Functional Diagram
www.szkingfrom.com
TEL:13923795851
5hong
.
Free Datasheet http://www.datasheet4u.com/
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet HX3001.PDF ] | |
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