|
|
PDF ISL8014A Data sheet ( Hoja de datos )
| Número de pieza | ISL8014A | |
| Descripción | 4A Low Quiescent Current 1MHz High Efficiency Synchronous Buck Regulator | |
| Fabricantes | Intersil Corporation | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de ISL8014A (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
|
No Preview Available !
DATASHEET
4A Low Quiescent Current 1MHz High Efficiency
Synchronous Buck Regulator
ISL8014A
The ISL8014A is a high efficiency, monolithic, synchronous
step-down DC/DC converter that can deliver up to 4A
continuous output current from a 2.8V to 5.5V input supply. It
uses a current control architecture to deliver very low duty
cycle operation at high frequency with fast transient response
and excellent loop stability.
The ISL8014A integrates a pair of low ON-resistance P-Channel
and N-Channel internal MOSFETs to maximize efficiency and
minimize external component count. The 100% duty-cycle
operation allows less than 400mV dropout voltage at 4A
output current. High 1MHz pulse-width modulation (PWM)
switching frequency allows the for use of small external
components and the SYNC input enables multiple ICs to
synchronize out-of-phase to reduce ripple and eliminate beat
frequencies.
The ISL8014A can be configured for discontinuous or forced
continuous operation at light load. Forced continuous
operation reduces noise and RF interference while
discontinuous mode provides high efficiency by reducing
switching losses at light loads.
Fault protection is provided by internal hiccup mode current
limiting during short circuit and overcurrent conditions, an
output overvoltage comparator and over-temperature monitor
circuit. A power-good output voltage monitor indicates when
the output is in regulation.
The ISL8014A is offered in a space saving 4mmx4mm QFN,
lead free package with exposed pad lead frames for low
thermal resistance.
The ISL8014A offers a 1ms power-good (PG) timer at
power-up. When shutdown, ISL8014A discharges the output
capacitor. Other features include internal soft-start, internal
compensation, overcurrent protection, and thermal shutdown.
The ISL8014A is offered in a 16 Ld 4mmx4mm QFN package
with 1mm maximum height. The complete converter occupies
less than 0.4in2 area.
Features
• High efficiency synchronous buck regulator with up to 97%
efficiency
• Power-good (PG) output with a 1ms delay
• 2.8V to 5.5V supply voltage
• 3% output accuracy over-temperature/load/line
• 4A output current
• Pin compatible to ISL8013A
• Start-up with prebiased output
• Internal soft-start - 1ms
• Soft-stop output discharge during disabled
• 35µA quiescent supply current in PFM mode
• Selectable forced PWM mode and PFM mode
• External synchronization up to 4MHz
• Less than 1µA logic controlled shutdown current
• 100% maximum duty cycle
• Internal current mode compensation
• Peak current limiting and hiccup mode short-circuit
protection
• Over-temperature protection
• Small 16 Ld 4mmx4mm QFN
• Pb-Free (RoHS compliant)
Applications
• DC/DC POL modules
• µC/µP, FPGA and DSP power
• Plug-in DC/DC modules for routers and switchers
• Portable instruments
• Test and measurement systems
• Li-ion battery powered devices
• Small form factor (SFP) modules
• Barcode readers
December 16, 2014
FN7525.2
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2009, 2011, 2014. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
1 page  
ISL8014A
Electrical Specifications Unless otherwise noted, all parameter limits are established across the recommended operating conditions and
the typical specification are measured at the following conditions unless otherwise noted: TA = -40°C to +85°C, VIN = 3.6V, EN = VDD. Typical values are
at TA = +25°C. Boldface limits apply across the operating temperature range, -40°C to +85°C. (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN MAX
(Note 7) TYP (Note 7)
UNITS
N-Channel MOSFET ON-resistance
LX Maximum Duty Cycle
VIN = 5V, IO = 200mA
VIN = 2.8V, IO = 200mA
- 50 75
- 70 100
- 100 -
mΩ
mΩ
%
PWM Switching Frequency
LX Minimum On-time
fSW
SYNCH = High
0.80 1.0 1.20
- - 140
MHz
ns
PG
Output Low Voltage
Sinking 1mA
- - 0.3
V
Delay Time (Rising Edge)
0.65 1 1.35
ms
PG Pin Leakage Current
PGOOD Rising Threshold
PG = VIN = 3.6V
Percentage of regulation voltage
- 0.01 0.1
89 92 95
µA
%
PGOOD Falling Threshold
Percentage of regulation voltage
85 88 91
%
PGOOD Delay Time (Falling Edge)
- 15 -
µs
EN, SYNCH
Logic Input Low
- - 0.4
V
Logic Input High
1.4 -
-
V
Synch Logic Input Leakage Current
Enable Logic Input Leakage Current
Thermal Shutdown
ISYNCH
IEN
Pulled up to 5.5V
- 0.1 1
- 0.1 1
- 140 -
µA
µA
°C
Thermal Shutdown Hysteresis
- 25 -
°C
NOTES:
6. Limits established by characterization and are not production tested.
7. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization
and are not production tested.
Submit Document Feedback
5
FN7525.2
December 16, 2014
5 Page 
ISL8014A
Typical Operating Performance Unless otherwise noted, operating conditions are: TA = +25°C, VVIN = 2.5V to 5.5V, EN = VIN,
SYNCH = 0V, L = 1.5µH, C1 = 2x22µF, C2 = 2x22µF, IOUT = 0A to 4A. (Continued)
LX 2V/DIV
IL 2A/DIV
LX 2V/DIV
VOUT 0.5V/DIV
VOUT 1V/DIV
PG 5V/DIV
PG 5V/DIV
FIGURE 31. OUTPUT SHORT CIRCUIT
IL 2A/DIV
FIGURE 32. OUTPUT SHORT CIRCUIT RECOVERY
5.500
5.375
5.250
OCP_3.3VIN
5.125
5.000
4.875
4.750
OCP_5VIN
4.625
4.500
-50
-25
0 25 50
TEMPERATURE (°C)
75
FIGURE 33. OUTPUT CURRENT LIMIT vs TEMPERATURE
100
Submit Document Feedback 11
FN7525.2
December 16, 2014
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet ISL8014A.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| ISL8014 | 4A Low Quiescent Current 1MHz High Efficiency Synchronous Buck Regulator | Intersil Corporation |
| ISL8014A | 4A Low Quiescent Current 1MHz High Efficiency Synchronous Buck Regulator | Intersil Corporation |
| 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 |