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PM6680A 데이터시트 PDF




ST Microelectronics에서 제조한 전자 부품 PM6680A은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

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부품번호 PM6680A 기능
기능 DUAL STEP-DOWN CONTROLLER
제조업체 ST Microelectronics
로고 ST Microelectronics 로고


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PM6680A 데이터시트, 핀배열, 회로
www.DataSheet4U.com
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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PM6680A pdf, 반도체, 판매, 대치품
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Pin settings
2 Pin settings
2.1 Connections
Figure 2. Pin connection (through top view)
1
PM6680A
PM6680A
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PM6680A 전자부품, 판매, 대치품
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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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