|
|
PDF MIC68220 Data sheet ( Hoja de datos )
| Número de pieza | MIC68220 | |
| Descripción | Dual 2A LDO Regulator | |
| Fabricantes | Micrel Semiconductor | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de MIC68220 (archivo pdf) en la parte inferior de esta página. Total 17 Páginas | ||
|
No Preview Available !
MIC68220
Dual 2A LDO Regulator
General Description
The MIC68220 is a dual high peak current LDO regulator
designed specifically for powering applications such as
FPGA core voltages that require high start up current with
lower nominal operating current. Capable of sourcing 2A of
current per channel for start-up, the MIC68220 provides
high power from a small MLF™ leadless package. The
MIC68220 can also implement a variety of power-up and
power-down protocols such as sequencing, tracking, and
ratiometric tracking.
The MIC68220 operates from a wide input range of 1.65V
to 5.5V, which includes all of the main supply voltages
commonly available today. It is designed to drive digital
circuits requiring low voltage at high currents (i.e. PLDs,
DSP, microcontroller, etc.). The MIC68220 incorporates a
delay pin (Delay) for control of power on reset output
(POR) at turn-on and power-down delay at turn-off. In
addition there is a ramp control pin (RC) for either tracking
applications or output voltage slew rate adjustment at turn-
on. This is important in applications where the load is
highly capacitive and in-rush currents can cause supply
voltages to fail and microprocessors or other complex logic
chips to hang up.
The MIC68220’s can be configured in two modes. In
tracking mode, the output voltage of Vout1 drives the RC2
pin so that the Vout2 tracks Vout1 during turn-on and turn-
off. In sequencing mode, POR1 of Vout1 drives the enable
pin (EN2) of Vout2 so that it turns on after the Vout1 and
turns off before (or after) Vout1. This behavior is critical
for power-up and power-down control in multi-output
power supplies. The MIC68220 is fully protected offering
both thermal and current limit protection, and reverse
current protection.
The MIC68220 has a junction temperature range of
-40°C to +125°C and is available in an adjustable Vout1 &
Vout2 version. The MIC68220 is offered in a low profile
4mm x 5mm 20ld MLF® package.
Features
• Stable with 4.7uF ceramic output capacitor
• Input voltage range: 1.65V to 5.5V
• 0.5V reference
• +1.0% initial output tolerance
• 2A maximum output current – peak start up
• 1A Continuous Operating Current
• Tracking on turn-on and turn-off with pin strapping
• Timing Controlled Sequencing On/Off
• Programmable Ramp Control™ for in-rush current
limiting and slew rate control of the output voltage on
Turn-On
• Power-on Reset (POR) supervisor with programmable
delay time
• Single Master can control multiple Slave regulators
with tracking output voltages
• Tiny 4mm x 5mm MLF® package
• Maximum dropout (VIN – VOUT) of 400mV over
temperature at 1A output current
• Adjustable Output Voltages
• Excellent line and load regulation specifications
• Logic controlled shutdown
• Thermal shutdown and current limit protection
Applications
• FPGA/PLD Power Supply
• Networking/Telecom Equipment
• Microprocessor Core Voltage
• High Efficiency Linear Post Regulator
• Sequenced or Tracked Power Supply
MLF and MicroLeadFrame a registered trademarks of Amkor Technology, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
September 2010
M9999-092310-C
1 page  
Micrel
MIC68220
Ordering Information
Part Number
MIC68220YML
Output
Current
2.0A
Voltage
ADJ
Junction
Temperature Range
–40°C to +125°C
Package
PB-Free 20-Pin 4x5 MLF®
Notes
For additional voltage options, contact Micrel Marketing.
MLF® is a GREEN RoHS compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free.
Pin Configuration
20-Pin 4mm x 5mm MLF® (ML)
September 2010
5 M9999-092310-C
5 Page 
Micrel
Functional Characteristics
Enable Turn-On
Line Transient
5V
4V
MIC68220
Time (10µs/div )
VIN = VOUT + 1V
VOUT = 1.8V
COUT = 4.7µF
IOUT = 10mA
CLOAD = 4.7µF
Time (100µs/div )
Load Transient
VIN = VOUT + 1V
VOUT = 1.8V
COUT = 4.7µF
2A
10mA
Time (40µs/div )
September 2010
11 M9999-092310-C
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet MIC68220.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| MIC68220 | Dual 2A LDO Regulator | Micrel Semiconductor |
| 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 |