DataSheet26.com

SC1406G PDF даташит

Спецификация SC1406G изготовлена ​​​​«Semtech Corporation» и имеет функцию, называемую «Power Supply Controller for Portable Pentium II & III SpeedStep Processors».

Детали детали

Номер произв SC1406G
Описание Power Supply Controller for Portable Pentium II & III SpeedStep Processors
Производители Semtech Corporation
логотип Semtech Corporation логотип 

28 Pages
scroll

No Preview Available !

SC1406G Даташит, Описание, Даташиты
SC1406G
Power Supply Controller for Portable
Pentium ® II & III SpeedStep™ Processors
POWER MANAGEMENT
Description
Features
The SC1406G PowerStep™ controller is a High Speed,
High Performance Hysteretic Mode PWM controller.
Teamed with the SC1405 Smart™ Driver, it powers ad-
vanced Pentium® II and Pentium® III processors. The
SC1406G features Intel Mobile Voltage Positioning
(IMVP), which increases battery life by reducing the volt-
age at the processor when it is heavily loaded. It also
directly supports Intel’s SpeedStep™ processors for even
longer battery life.
A 5-bit DAC, accurate to 0.85%, sets the output voltage
reference, and implements the 0.925V to 2.00V range
of the mobile Pentium® specifications. The hysteretic
converter uses a comparator without an error amplifier,
and therefore provides the fastest possible transient
response, while avoiding the stability issues inherent to
classical PWM controllers.
u High-speed hysteretic controller provides high effi
ciency over a wide operating load range
u Inherently stable
u Complete CPU power solution with two LDO drivers
u Programmable core voltage for Pentium® II & III pro
cessors
u Native Speed Step® support
Applications
u Laptop and notebook computers
u High performance microprocessor-based systems
u High efficiency distributed power supplies
Two linear regulator controllers, coupled with appropri-
ate external transistors, produce tightly regulated 1.5V
and 2.5V to complete the processor power solution.
The SC1406G also features separate soft-start con-
trols for the converter and the regulators, a TTL-
compatible power good indication, logic enable, and
low battery undervoltage lockout. Programmable
current limiting uses a separate comparator to protect
against overloads and short-circuits.
Conceptual Application Circuit
+V_5
VVIIDD [[44::00]]
PW M
Controller
SSCC11440066GG
IMIMVVPP
CCOONNTTRROOLLLLEERR
LDO
Controller
LDO
Controller
SSCC11440055
SSmmaartrt
MMOOSSFFEETT
DDrirviveerr
3.3V
3.3V
+V_IN
Lo ++VVCCCC__CCPPUU__CCOORREE
Co
0.925V-2.0V
Up to 14A
1.5V
2.5A
++VVCCCC__CCPPUU__IIOO
2.5V
150mA
++VVCCCC__CCPPUU__CCLLKK
Revision 8/3/2000 1 www.semtech.com









No Preview Available !

SC1406G Даташит, Описание, Даташиты
SC1406G
POWER MANAGEMENT
Absolute Maximum Rating
PARAMETER
VCC Supply Voltage
Low Battery Input
Enable
All other I/O pins
Operating Junction Temperature
Lead Temperature (Soldering 10 seconds)
Storage Temperature
Electrical Characteristics
SYMBOL
LBIN
EN
TJ
TL
TSTG
MAXIMUM
UNITS
-0.3 to 7
V
-0.3 to 7
V
-0.3 to 7
V
GND - 0.3 to VCC + 0.3
V
0 to +125
°C
300 °C
-65 to 150
°C
Unless specified: -0 < TA < 100°C; VCC = 3.3V (See test circuit)
PA R A M E T E R
SYMBOL
CONDITIONS
MIN T YP MAX UNITS
Supply (VCC)
Input Supply Voltage Range
3.0 3.3 6.0
Quiescent Current
ICCQ EN is low, 3.0V < VCC < 3.6V
EN is high and the LBIN is in UVLO
10
350
Operating Current
Under Voltage Lock Out
Threshold
ICC
EN is high
4 15
2.7 2.95
Under Voltage Lock Out
Hysteresis
20
Enable Input
Input High
Input Low
3.0 < VCC < 5V
0.7*VCC
0.8
Low Battery Monitor (LBIN)
UVLO Threshold
VTHDC
VLBIN > VTHDC
1.175 1.225 1.275
Input Bias Current
> VTHDC
±0.3
VLBIN < VTHDC
0.6 1.0 10.5
VCORE Power Good Generator: (Note that during the 50µs latency time of any VID code change, the
PWRGD output signal may change state one or more times).
Over-Voltage Threshold
VHCORE
VDAC = 0.9V to 1.675V
1.08*VDAC
1.12*VDAC
Under-Voltage Threshold
VLCORE
0.88*VDAC
0.92*VDAC
Output Voltage, High
IPWRGD = 10µA (source) EN is high
0.95*VCC
Output Voltage, Low
IPWRGD = 10µA (sink), EN is high
0.4
IPWRGD = 10µA (sink), the battery is in
UVLO
0.8
V
µA
mA
V
mV
V
V
V
µA
V
V
V
V
V
ã 2000 Semtech Corp.
2
www.semtech.com









No Preview Available !

SC1406G Даташит, Описание, Даташиты
SC1406G
POWER MANAGEMENT
Electrical Characteristics Continued
Unless specified: -0 < TA < 100°C; VCC = 3.3V (See test circuit)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Core Converter Soft Start Current
Core Converter Soft-Start Current
ISSCORE
Charge (Source) current
0.6 1 1.45 µA
VSSCORE Soft-Start Termination
Discharge (Sink) current
0.30
1
1.90 2.00 2.10
mA
V
VSSCORE Discharge Threshold
150 400
mV
VID DAC
VID Input High Threshold
VID Input Low Threshold
VID Input Pull-Up Current,VID (0-4)
3.0V < VCC < 3.6V
0.7*Vc
VID (0-4) = 00000...11111
6
V
0.8
40 µA
Output Voltage Accuracy
Settling Time*
Input Bias Current
Input Offset Voltage
Hysteresis Setting Current
Output Voltage High
Output Voltage Low
Propagation Delay Time**
Measured at device pins, from the
trip point to 50% of CO transition.
Output Rise/Fall Times**
Measured between 30% and 70%
points of CO transition
IDAC = 0, VID(0-4) = 00000...11111
CDAC = 1000pF
VID is set to change VCORE from
CORE Comparator (CMP, CMPREF, HYS, CO)
VCMP = VCMPREF = 1.3V
-0.85
VCMPREF = 1.3V
ICMPREF
RHYS = open
RHYS = 170kW
±7
RHYS = 17kW
±85
Load Impedance = 100k in
parallel with 10pF, VCC = 3.0V
2.5
Load Impedance = 100k in
parallel with 10pF, VCC = 3.6V
VCMPREF = 1.3V, D VCMP = ± 40mV
(±20mV overdrive)
TA = 25°C
TA = full range
TR CCO = 10pF
VCC = 3.0V
RCO = 100K
+0.85
35
±1.5
±10
±100
±2
±3
±2
±13
±115
0.4
20
30
7 10
%
µs
µA
mV
µA
V
V
ns
ns
ã 2000 Semtech Corp.
3
www.semtech.com










Скачать PDF:

[ SC1406G.PDF Даташит ]

Номер в каталогеОписаниеПроизводители
SC1406PORTABLE PENTIUM II & III POWER SUPPLY CONTROLLERSemtech Corporation
Semtech Corporation
SC1406APORTABLE PENTIUM II & III POWER SUPPLY CONTROLLERSemtech Corporation
Semtech Corporation
SC1406ACTSPORTABLE PENTIUM II & III POWER SUPPLY CONTROLLERSemtech Corporation
Semtech Corporation
SC1406GPower Supply Controller for Portable Pentium II & III SpeedStep ProcessorsSemtech Corporation
Semtech Corporation

Номер в каталоге Описание Производители
TL431

100 мА, регулируемый прецизионный шунтирующий регулятор

Unisonic Technologies
Unisonic Technologies
IRF840

8 А, 500 В, N-канальный МОП-транзистор

Vishay
Vishay
LM317

Линейный стабилизатор напряжения, 1,5 А

STMicroelectronics
STMicroelectronics

DataSheet26.com    |    2020    |

  Контакты    |    Поиск