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부품번호 | PM6670A 기능 |
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기능 | Complete DDR2/3 Memory Power Supplies Controller | ||
제조업체 | ST Microelectronics | ||
로고 | |||
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PM6670A
Complete DDR2/3 memory power supplies controller
Preliminary Data
Features switching
■ Switching section (VDDQ)
– 4.5V to 36V input voltage range
– 0.9V, ±1% voltage reference
– 1.8V (DDR2) or 1.5V (DDR3) fixed output
voltages
– 0.9V to 2.6V adjustable output voltage
– 1.237V ±1% reference voltage available
– Very fast load transient response using
constant-on-time control loop
– No RSENSE current sensing using low side
MOSFETs' RDS(ON)
– Negative current limit
– Latched OVP and UVP
– Soft start internally fixed at 3ms
– Selectable pulse skipping at light load
– selectable No-Audible (33KHz) pulse skip
mode
– Ceramic output capacitors supported
– Output voltage ripple compensation
■ VTT LDO and VTTREF
– 2Apk LDO with foldback for VTT
– Remote VTT sensing
– High-Z VTT output in S3
– Ceramic output capacitors supported
– ±15mA Low noise buffered reference
Applications
■ DDR2/3 memory supply
■ Digital TV system
■ Handheld and PDAs
■ CPU and chipset I/O supplies
■ SSTL18, SSTL15 and HSTL bus termination
Order codes
VFQFPN-24 4x4
Description
The device PM6670A is a complete DDR2/3
power supply regulator designed to meet JEDEC
specifications.
It integrates a Constant On-Time (C.O.T.) buck
controller, a 2Apk sink/source Low Drop Out
regulator and a 15mA low noise buffered
reference.
The C.O.T. architecture assures fast transient
response supporting both electrolytic and ceramic
output capacitors. An embedded integrator
control loop compensates the DC voltage error
due to the output ripple.
The 2Apk sink/source linear regulator provides
the memory termination voltage with fast load
transient response.
The device is full compliant with system sleep
states S3 and S4/S5, providing LDO output high
impedance in Suspend-To-RAM and Tracking
Discharge of all outputs in Suspend-To-Disk.
Part number
Package
Packaging
PM6670A
VFQFPN-24 4x4 (Exposed Pad)
Tube
October 2006
Rev 1
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to
change without notice.
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Pin settings
2 Pin settings
2.1 Connections
Figure 2. Pin connection (through top view)
PM6670A
24
1
VTTGND
VTTSNS
DDRSEL
VTTREF
SGND
AVCC
6
7
PM6670A
19
18
VCC
LGATE
PGND
PG
S3
S5
13
12
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PM6670A
3 Electrical data
Electrical data
3.1
Maximum rating
Table 2. Absolute maximum ratings (1)
Symbol
Parameter
Value
Unit
VAVCC
VVCC
AVCC to SGND
VCC to SGND
PGND, VTTGND to SGND
-0.3 to 6
-0.3 to 6
-0.3 to 0.3
HGATE and BOOT to PHASE
-0.3 to 6
VPHASE
HGATE and BOOT to PGND
PHASE to SGND
LGATE to PGND
CSNS, PG, S3, S5, DSCG, COMP, VSNS,
VOSC, VREF, MODE, DDRSEL to GND
-0.3 to 44
-0.3 to 38
-0.3 to VVCC +0.3
-0.3 to VAVCC + 0.3
V
PTOT
VTTREF, VREF, VTT, VTTSNS to SGND
LDOIN, VTT, VTTREF, LDOIN to VTTGND
Power dissipation @TA = 25°C
-0.3 to VAVCC + 0.3
-0.3 to VAVCC + 0.3
2.3
W
1. Free air operating conditions unless otherwise specified. Stresses beyond those listed under "absolute
maximum ratings" may cause permanent damage to the device. Exposure to absolute maximum rated
conditions for extended periods may affect device reliability.
3.2
Thermal data
Table 3. Thermal data
Symbol
Parameter
RthJA
TSTG
TA
TJ
Thermal resistance junction to ambient
Storage temperature range
Operating ambient temperature range
Junction operating temperature range
Value
42
-40 to 150
-40 to 85
-25 to 125
Unit
°C/W
°C
°C
°C
3.3 Recommended operating conditions
Table 4. Recommended operating conditions
Symbol
Parameter
VIN
VAVCC
VVCC
Input voltage range
IC supply voltage
IC supply voltage
Min Typ Max
4.5 36
4.5 5.5
4.5 5.5
Unit
V
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구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
PM6670 | Complete DDR2/3 memory power supply controller | STMicroelectronics |
PM6670A | Complete DDR2/3 Memory Power Supplies Controller | ST Microelectronics |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |