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PM6680 데이터시트 PDF




STMicroelectronics에서 제조한 전자 부품 PM6680은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


PDF 형식의 PM6680 자료 제공

부품번호 PM6680 기능
기능 No Rsense dual step-down controller
제조업체 STMicroelectronics
로고 STMicroelectronics 로고


PM6680 데이터시트 를 다운로드하여 반도체의 전기적 특성과 매개변수에 대해 알아보세요.




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PM6680 데이터시트, 핀배열, 회로
PM6680
No Rsense dual step-down controller with adjustable voltages
for notebook system power
Features
6 V to 28 V input voltage range
www.DataSheet4U.comAdjustable output voltages
5V always voltage available deliver 100 mA
peak current
1.237 V ± 1% reference voltage available
Lossless current sensing using low side
MOSFETs RDS(on)
Negative current limit
Soft-start internally fixed at 2ms
Soft output discharge
Latched OVP and UVP
Selectable pulse skipping at light loads
Selectable minimum frequency (33 kHz) in
pulse skip mode
4mW maximum quiescent power
Independent power good signals
Output voltage ripple compensation
Applications
Notebook computers
Tablet PC or slates
Mobile system power supply
3-4 cells Li+ battery powered devices
VFQFPN-32 5X5
Description
PM6680 is a dual step-down controller
specifically designed to provide extremely high
efficiency conversion, with lossless 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 PM6680 provides a selectable
switching frequency, allowing three different
values of switching frequencies for the two
switching sections. The output voltages OUT1
and OUT2 can be adjusted from 0.9 V to 5.5 V
and from 0.9 V to 3.3 V respectively.
Table 1. Device summary
Order codes
Package
PM6680
VFQFPN-32 5mm x 5mm (Exposed pad)
PM6680TR
VFQFPN-32 5mm x 5mm (Exposed pad)
Packaging
Tube
Tape and reel
August 2007
Rev 6
1/49
www.st.com
49




PM6680 pdf, 반도체, 판매, 대치품
List of figures
List of figures
PM6680
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
www.DataSheet4UF.ciogmure 8.
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Figure 34.
Figure 35.
Figure 36.
Figure 37.
Figure 38.
Figure 39.
Figure 40.
Figure 41.
Figure 42.
Simplified application schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Pin connection (Through top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.5V output efficiency vs load current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
1.05V output efficiency vs load current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
PWM no load input battery vs input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Skip no load battery current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
No-audible skip no load battery current vs input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Stand-by mode input battery current vs input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Shutdown mode input battery current vs input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
1.5V switching frequency vs load current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
1.05V switching frequency vs load current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
LDO5 vs output current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
1.5V voltage regulation vs load current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
1.05V voltage regulation vs load current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Voltage reference vs load current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
OUT1, OUT2 and LDO5 power-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
1.5V load transient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
1.05V load transient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
1.5V soft start (0.25load). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
1.05V soft start (0.175load). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
1.5V soft end (No load) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
1.05V soft end (No load) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
1.5V soft end (1Load) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
1.05V soft end (1Load) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
1.5V no-audible skip mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
1.05V no-audible skip mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Functional block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Constant ON time PWM control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Constant on-time block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Circuitry for output ripple compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
PWM and pulse skip mode inductor current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
No audible skip mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
RDSON sensing technique . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Current waveforms in current limit conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Soft start waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Circuitry for output ripple compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Virtual ESR network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
VIN pin filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Inductor current waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Bootstrap circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Current paths, ground connection and driver traces layout . . . . . . . . . . . . . . . . . . . . . . . . 44
Package dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
4/49

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PM6680 전자부품, 판매, 대치품
PM6680
2 Electrical data
Electrical data
2.1
www.DataSheet4U.com
Maximum rating
Table 2. Absolute maximum ratings
Parameter
Value
V5SW, LDO5 to PGND
VIN to PGND
HGATEx and BOOTx, to PHASEx
PHASEx to PGND
CSENSEx , to PGND
CSENSEx to BOOTx
LGATEx to PGND
FBx, COMPx, SKIP, , FSEL,VREF to SGND1,SGND2
PGND to SGND1,SGND2
SHDN,PGOODx, OUTx, VCC, ENx to SGND1,SGND2
Power dissipation at TA = 25ºC
Maximum withstanding voltage range test condition:
CDF-AEC-Q100-002- “Human Body Model”
acceptance criteria: “Normal Performance”
VIN
Other pins
-0.3 to 6
-0.3 to 36
-0.3 to 6
-0.6 (1) to36
-0.6 to 42
-6 to 0.3
-0.3 (2) to LDO5 +0.3
-0.3 to Vcc +0.3
-0.3 to 0.3
-0.3 to 6
2.8
±1000
±2000
1. PHASE to PGND up to -2.5 V for t<10 ns
2. LGATEx to PGND up to -1 V for t<40 ns
Unit
V
V
V
V
V
V
V
V
V
V
W
V
2.2
Thermal data
Table 3. Thermal data
Symbol
Parameter
RthJA
TSTG
TJ
Thermal resistance junction to ambient
Storage temperature range
Junction operating temperature range
Value
35
-40 to 150
-10 to 125
Unit
°C/W
°C
°C
7/49

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구매 문의
일반 IC 문의 : 샘플 및 소량 구매
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전력 반도체 전문업체

상호 : 아이지 인터내셔날

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관련 데이터시트

부품번호상세설명 및 기능제조사
PM6680

No Rsense dual step-down controller

STMicroelectronics
STMicroelectronics
PM6680A

DUAL STEP-DOWN CONTROLLER

ST Microelectronics
ST Microelectronics

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