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부품번호 | PM6680A 기능 |
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기능 | DUAL STEP-DOWN CONTROLLER | ||
제조업체 | ST Microelectronics | ||
로고 | |||
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PM6680A
Dual syncronous step-down controller
with adjustable output voltages plus LDO
Preliminary Data
Features
■ 6V to 36V input voltage range
■ Adjustable output voltages
■ 5V LDO delivers 100mA peak current
■ 1.237V ±1% reference voltage available
externally
■ Current sensing using low side MOSFETs
RDS(on)
■ Accurate current sense with RSENSE
■ Valley current sensing
■ Soft-start internally fixed at 2ms
■ Soft output discharge
■ Latched OVP and UVP
■ Selectable pulse skipping at light loads
■ Selectable minimum frequency (33kHz) in
pulse skip mode
■ 5mW maximum quiescent power
■ Independent power good signals
■ Output voltage ripple compensation
■ Thermal shutdown
Applications
■ Embedded computer system
■ FPGA system power
■ Industrial applications on 24V
■ High performance and high density DC/DC
modules
VFQFPN-32 5X5
Description
PM6680A is a dual step-down controller
specifically designed to provide extremely high
efficiency conversion, with losses current sensing
technique. The constant on-time architecture
assures fast load transient response and the
embedded voltage feed-forward provides nearly
constant switching frequency operation. An
embedded integrator control loop compensates
the DC voltage error due to the output ripple.
Pulse skipping technique increases efficiency at
very light load. Moreover a minimum switching
frequency of 33kHz is selectable to avoid audio
noise issues. The PM6680A provides a selectable
switching frequency, allowing either
200kHz/300kHz, 300kHz/400Khz or
400kHz/500kHz operation of the two switching
sections. The output voltages OUT1 and OUT2
can be adjusted from 0.9V to 5V and from 0.9V to
3.3V respectively.
Order codes
Part number
PM6680A
Package
VFQFPN-32 5X5 (Exposed Pad)
Packaging
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)
1
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PM6680A
3 Electrical data
3.1
Maximum rating
Table 2. Absolute maximum ratings
Symbol
Parameter
VV5SW
VIN
V5SW to PGND
VIN to PGND
Vcc Vcc to PGND
VOUT
OUTx to PGND
HGATE and BOOT, to PHASE
HGATE and BOOT, to PGND
CSENSEx and PHASE
LGATEx to PGND
FB, COMP, SKIP, PGOOD, FSEL, LDO5, EN,
VREF
SHDN
Power dissipation at TA = 25ºC
3.2
Thermal data
Table 3. Thermal data
Symbol
Parameter
RthJA
TSTG
TJ
Thermal resistance junction to ambient
Storage temperature range
Junction operating temperature range
Electrical data
Value
-0.3 to 6
-0.3 to 38
-0.3 to 6
-0.3 to 6
-0.3 to 6
-0.3 to 44
-0.3 to 38
-0.3 to VCC +0.3
-0.3 to VCC +0.3
-0.3 to 6
TBD
Unit
V
V
V
V
V
V
V
V
V
V
W
Value
35
-40 to 150
-25 to 125
Unit
°C/W
°C
°C
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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 |
PM6680 | No Rsense dual step-down controller | STMicroelectronics |
PM6680A | DUAL STEP-DOWN CONTROLLER | ST Microelectronics |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |