|
|
Número de pieza | AX3604 | |
Descripción | Dual High-Efficiency PWM Step-Down DC-DC Converter | |
Fabricantes | AXElite | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de AX3604 (archivo pdf) en la parte inferior de esta página. Total 15 Páginas | ||
No Preview Available ! AX3604
Dual High-Efficiency PWM Step-Down
DC-DC Converter
GENERAL DESCRIPTION
The AX3604 is a dual high-efficiency Pulse-Width-Modulated (PWM) step-down
DC-DC converter. It is capable of delivering 1A output current over a wide input voltage
range from 2.5V to 5.5V, the AX3604 is ideally suited for portable electronic devices that
are powered from 1-cell Li-ion battery or from other power sources within the range such
as cellular phones, PDAs and other handheld devices.
Two operational modes are available: PWM/Low-Dropout auto-switch and shutdown
modes. Internal synchronous rectifier with low RDS(ON) dramatically reduces conduction
loss at PWM mode. No external Schottky diode is required in practical application.
The AX3604 enters Low-Dropout mode when normal PWM cannot provide regulated
output voltage by continuously turning on the upper PMOS. The AX3604 enter shutdown
mode and consumes less than 0.1μA when EN pin is pulled low.
The switching ripple is easily smoothed-out by small package filtering elements due
to a fixed operation frequency of 1.5MHz. This along with small TDFN-12L (3x3) package
provides small PCB area application. Other features include soft start, lower internal
reference voltage with 2% accuracy, over temperature protection, and over current
protection.
FEATURES
- 2.5V to 5.5V Input Voltage Range
- Adjustable Output Voltage from 0.6V to VIN
- 1A Output Current/per channel
- High Efficiency : up to 95%
- No Schottky Diode Required
- 1.5MHz Fixed-Frequency PWM Operation
- Small 12-Lead TDFN Package
1/15
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.1 Mar.22, 2013
1 page AX3604
ELECTRICAL CHARACTERISTICS
(VIN = 3.6V, VOUT = 2.5V, VREF = 0.6V, L = 2.2uH, CIN = 4.7μF, COUT = 10μF, TA = 25°C,
IMAX= 1A unless otherwise specified)
Characteristics
Symbol
Conditions
Min Typ Max Units
Channel 1 and Channel 2
Input Voltage Range
Under Voltage Lock Out
threshold
Quiescent Current
VIN
UVLO
IQ IOUT=0mA, VFB = VREF + 5%
2.5 - 5.5
-2 -
- 250 350
V
V
μA
Shutdown Current
ISHDN EN=GND
- 0.1 1 μA
Reference Voltage
VREF For Adjustable Output Voltage 0.588 0.6 0.612
Adjustable Output Voltage
Range
VOUT (Note 1)
VREF
VIN
−ΔV
ΔVOUT
VIN = 2.5V to 5.5V,
VOUT = 1.2V, 0A < IOUT < 1A
-3 - +3
ΔVOUT
VIN = 2.5V to 5.5V,
VOUT = 1.3V, 0A < IOUT < 1A
-3 -
3
Output Voltage
Accuracy
Fix
ΔVOUT
VIN = 2.5V to 5.5V,
VOUT = 1.8V, 0A < IOUT < 1A
VIN = VOUT + ΔV to 5.5V
ΔVOUT (Note 2)
-3 -
-3 -
3
3
VOUT = 2.5V, 0A < IOUT < 1A
VIN = VOUT + ΔV to 5.5V
ΔVOUT (Note 2)
-3 - 3
VOUT = 3.3V, 0A < IOUT < 1A
Output Voltage
Accuracy
VIN = VOUT + ΔV to 5.5V
Adjustable ΔVOUT (Note 2)
0A < IOUT < 1A
-3 - 3
FB Input Current
IFB VFB = VIN
-50 - 50
V
V
%
%
%
%
%
%
nA
RDS(ON) of P-MOSFET
RDS(ON)_P IOUT= 200mA
VIN = 2.5V
VIN = 3.6V
- 0.38 -
- 0.28 -
Ω
Ω
RDS(ON) of N-MOSFET
RDS(ON)_N IOUT= 200mA
VIN = 2.5V
VIN = 3.6V
- 0.35 -
- 0.25 -
Ω
Ω
5/15
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.1 Mar.22, 2013
5 Page TYPICAL CHARACTERISTICS
AX3604
11/15
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.1 Mar.22, 2013
11 Page |
Páginas | Total 15 Páginas | |
PDF Descargar | [ Datasheet AX3604.PDF ] |
Número de pieza | Descripción | Fabricantes |
AX3604 | Dual High-Efficiency PWM Step-Down DC-DC Converter | AXElite |
Número de pieza | Descripción | Fabricantes |
SLA6805M | High Voltage 3 phase Motor Driver IC. |
Sanken |
SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
Analog Devices |
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |