DataSheet.es    


PDF ISL6506BI Data sheet ( Hoja de datos )

Número de pieza ISL6506BI
Descripción Multiple Linear Power Controller
Fabricantes Intersil 
Logotipo Intersil Logotipo



Hay una vista previa y un enlace de descarga de ISL6506BI (archivo pdf) en la parte inferior de esta página.


Total 8 Páginas

No Preview Available ! ISL6506BI Hoja de datos, Descripción, Manual

NOc1No-T8nO8Rta8REc-CIEtNCOoTuOMErMRMTSMEeIcNELhNDonDEricDEwaDwFl SORwDuRE.ipanPNpttLaeoEArrSWstChiClED.eceMeEontESmteNIG/rtTsNactS
Multiple Linear Power Controller with
ACPI Control Interface
The ISL6506BIBZ complements other power building blocks
(voltage regulators) in ACPI-compliant designs for
microprocessor and computer applications. The IC
integrates the control of the 5VDUAL and 3.3VDUAL rails into
an 8 Ld EPAD SOIC package. The ISL6506BIBZ operating
mode (active outputs or sleep outputs) is selectable through
two digital control pins; S3 and S5.
A completely integrated linear regulator generates the
3.3VDUAL voltage plane from the ATX supply’s 5VSB output
during sleep states (S3, S4/S5). In active states (during S0
and S1/S2), the ISL6506BIBZ uses an external N-Channel
pass MOSFET to connect the outputs directly to the 3.3V
input supplied by an ATX power supply, for minimal losses.
The ISL6506BIBZ powers up the 5VDUAL plane by switching
in the ATX 5V output through an NMOS transistor in active
states, or by switching in the ATX 5VSB through a PMOS (or
PNP) transistor in S3 sleep state. In S4/S5 sleep states, the
ISL6506BIBZ 5VDUAL output is shut down.
The ISL6506BIBZ features a 2A current limit on the internal
3.3V LDO.
September 12, 2013
ISL6506BI
FN7814.2
Features
• Provides 2 ACPI-Controlled Voltages
- 5VDUAL USB/Keyboard/Mouse
- 3.3VDUAL/3.3VSB PCI/Auxiliary/LAN
• Excellent 3.3VDUAL Regulation in S3/S4/S5
- ±2.0% Over-Temperature
- 2A Capability
• Small Size; Very Low External Component Count
• Over-Temperature Shutdown
• Pb-Free Available (RoHS Compliant)
Applications
ACPI-Compliant Power Regulation for Motherboards
- 5VDUAL is shut down in S4/S5 sleep states
Pinout
ISL6506BIBZ
(8 LD EPSOIC)
TOP VIEW
VCC 1
3V3AUX 2
S3 3
S5 4
GND
8 N/C
7 5VDLSB
6 DLA
5 GND
Ordering Information
PART NUMBER
(Notes 1, 2, 3)
PART
MARKING
TEMP. RANGE
(°C)
PACKAGE
(Pb-free)
PKG.
DWG. #
ISL6506BIBZ
6506B IBZ
-40 to +85
8 Ld EPSOIC
M8.15C
NOTES:
1. Add “-T*” suffix for tape and reel. Please refer to TB347 for details on reel specifications.
2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte
tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil
Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
3. For Moisture Sensitivity Level (MSL), please see device information page for ISL6506BI. For more information on MSL please see techbrief TB363.
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 2011, 2013. 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




ISL6506BI pdf
ISL6506BI
initiation of soft-start. The 3.3VDUAL rail is brought up
through the internal standby LDO through an internal digital
soft-start function. Figure 3 shows the 5VDUAL rail initiating a
soft-start at time t2 as well.
At time t4, the system has transitioned into S0 state and the
ATX supplies have begun to ramp-up. With the ISL6506BIBZ
(Figure 2), the 5VDUAL rail will begin to ramp-up from the
5VATX rail through the body diode of the N-MOSFET (Q3). At
time t5, the 12VATX rail has surpassed the 12V POR level.
Time t6 is three soft-start cycles after the 12V POR level has
been surpassed. At time t6, three events occur
simultaneously. The DLA pin is forced to a high impedance
state which allows the 12V rail to enhance the two N-
MOSFETs (Q1 and Q3) that connect the ATX rails to the
3.3VDUAL and 5VDUAL rails. The 5VDLSB pin is actively
pulled high, which will turn the P-MOSFET (Q2) off. Finally,
the internal LDO which regulates the 3.3VAUX rail in sleep
states is put in standby mode.
5VSB
(1V/DIV)
12VATX (2V/DIV)
5VATX (1V/DIV)
3.3VATX (1V/DIV)
3.3VDUAL
(2V/DIV)
5VDUAL
(1V/DIV)
0V
DLA
(10V/DIV)
t0 t1 t2 t3
t4 t5
TIME
t6
FIGURE 2. ISL6506BIBZ SOFT-START INTERVAL IN S4/S5
STATE AND S5 TO S0 TRANSITION
Sleep to Wake State Transitions
Figures 2 and 3, starting at time t4, depict the transitions
from sleep states to the S0 wake state. Figure 2 shows the
transition of the ISL6506BIBZ from the S4/S5 state to the S0
state. Figure 3 shows how the ISL6506BIBZ will transition
from the S3 sleep state into S0 state. For all transitions, t4
depicts the system transition into the S0 state. Here, the ATX
supplies are enabled and begin to ramp up. At time t5, the
12VATX rail has exceeded the POR threshold. Three soft-
start periods after time t5, at time t6, three events occur
simultaneously. The DLA pin is forced to a high impedance
state, which allows the 12V rail to enhance the two N-
MOSFETs (Q1 and Q3) that connect the ATX rails to the
3.3VDUAL and 5VDUAL rails. The 5VDLSB pin is actively
pulled high, which will turn the P-MOSFET (Q2) off. Finally,
the internal LDO which regulates the 3.3VDUAL rail in sleep
states is put in standby mode.
5VSB
(1V/DIV)
5VDUAL
(1V/DIV)
3.3VDUAL
(2V/DIV)
12VATX (2V/DIV)
5VATX (1V/DIV)
3.3VATX (1V/DIV)
0V
5VDLSB
(5V/DIV)
DLA
(10V/DIV)
t0 t1 t2 t3
t4 t5
TIME
t6
FIGURE 3. SOFT-START INTERVAL FOR S3 TO S0
TRANSITION FOR ISL6506BIBZ
Internal Linear Regulator Undervoltage Protection
The undervoltage protection on the internal linear regulator
is only active during sleep states and after the initial soft-start
ramp of the 3.3V linear regulator. The undervoltage trip point
is set at 25% below nominal, or 2.475V.
When an undervoltage is detected, the 3.3V linear regulator
is disabled. One soft-start interval later, the 3.3V linear
regulator is retried with a soft-start ramp. If the linear
regulator is retried 3 times and a fourth undervoltage is
detected, then the 3.3V linear regulator is disabled and can
only be reset through a POR reset.
Internal Linear Regulator Overcurrent Protection
When an overcurrent condition is detected, the gate voltage
to the internal NMOS pass element is reduced, which
causes the output voltage of the linear regulator to be
reduced. When the output voltage is reduced to the
undervoltage trip point, the undervoltage protection is
initiated and the output will shutdown.
Layout Considerations
The typical application employing an ISL6506BIBZ is a fairly
straight forward implementation. Like with any other linear
regulator, attention has to be paid to the few potentially
sensitive small signal components, such as those connected
to sensitive nodes or those supplying critical bypass current.
The power components (pass transistors) and the controller
IC should be placed first. The controller should be placed in
a central position on the motherboard, not excessively far
from the 3.3VDUAL island or the I/O circuitry. Ensure the
3V3AUX connection is properly sized to carry 1A without
exhibiting significant resistive losses at the load end.
Similarly, the input bias supply (5VSB) carries a similar level
of current (for best results, ensure it is connected to its
respective source through an adequately sized trace and is
5 FN7814.2
September 12, 2013

5 Page










PáginasTotal 8 Páginas
PDF Descargar[ Datasheet ISL6506BI.PDF ]




Hoja de datos destacado

Número de piezaDescripciónFabricantes
ISL6506BMultiple Linear Power ControllerIntersil Corporation
Intersil Corporation
ISL6506BIMultiple Linear Power ControllerIntersil
Intersil

Número de piezaDescripciónFabricantes
SLA6805M

High Voltage 3 phase Motor Driver IC.

Sanken
Sanken
SDC1742

12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters.

Analog Devices
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,
permitiéndote verlos en linea o descargarlos en PDF.


DataSheet.es    |   2020   |  Privacy Policy  |  Contacto  |  Buscar