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부품번호 | FR9884 기능 |
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기능 | 340KHz Synchronous Step-Down DC/DC Converter | ||
제조업체 | Fiti | ||
로고 | |||
fitipower integrated technology lnc.
FR9884
18V, 3A, 340KHz Synchronous Step-Do8w5nT
DC/DC Converter
Description
The FR9884 is a synchronous step-down DC/DC
converter that provides wide 4.5V to 18V input
voltage range and 3A continuous load current
capability.
Fault protection includes cycle-by-cycle current limit,
input UVLO, output over voltage protection and
thermal shutdown. Besides, adjustable soft-start
function prevents inrush current at turn-on. This
device uses current mode control scheme that
provides fast transient response. In shutdown
mode, the supply current is about 10μA.
The FR9884 is available in an 8-pin SOIC package,
which provides a very compact system solution and
good thermal conductance.
Features
● Wide Input Voltage from 4.5V to 18V
● 3A Output Current
● Adjustable Output Voltage from 0.925V to 14V
● Low Rds(on) Integrated Power MOSFET
● High Efficiency up to 93%
● Fixed 340KHz Switching Frequency
● Current Mode Operation
● Adjustable Soft-Start
● Cycle-by-Cycle Current Limit
● Input Under Voltage Lockout
● Over-Temperature Protection With Auto Recovery
● 10μA Shutdown Current
● Thermal Enhanced SOP-8 (Exposed Pad) Package
● RoHS Compliant
Applications
● Set-Top-Box
● DVD,LCD Display
● OLPC, Netbook
● Distributed Power System
● Datacom, XDSL
Pin Assignments
SP Package (SOP-8 Exposed Pad)
BS
VIN
SW
GND
1
2
3
4
8 SS
7 EN
6 COMP
5 FB
Figure 1. Pin Assignment of FR9884
Ordering Information
FR9884□□□
TR: Tape / Reel
G: Green
Package Type
SP: SOP-8 (Exposed Pad)
FR9884-1.7-DEC-2011
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fitipower integrated technology lnc.
FR9884
Absolute Maximum Ratings
85T
● Input Supply Voltage VIN --------------------------------------------------------------------------------- -0.3V to +21V
● SW Voltage VSW -------------------------------------------------------------------------------------------- -1V to VIN +0.3V
● Boost Trap Voltage VBS ----------------------------------------------------------------------------------- Vsw -0.3V to Vsw +6V
● All Other Pins Voltage ------------------------------------------------------------------------------------ -0.3V to +6V
● Maximum Junction Temperature (TJ) ----------------------------------------------------------------- +150°C
● Storage Temperature (TS) ------------------------------------------------------------------------------- -65°C to +150°C
● Lead Temperature (Soldering, 10sec.) --------------------------------------------------------------- +260°C
● Power Dissipation @TA=25°C, (PD)
SOP-8 (Exposed Pad) ------------------------------------------------------------------------ 1.25W
● Package Thermal Resistance, (θJA):
SOP-8 (Exposed Pad) ------------------------------------------------------------------------ 50°C/W
● Package Thermal Resistance, (θJC):
SOP-8 (Exposed Pad) ------------------------------------------------------------------------ 15°C/W
Note 1:Stresses beyond those listed under “Absolute Maximum Ratings" may cause permanent damage to the device.
Recommended Operating Conditions
● Input Supply Voltage (VIN) ------------------------------------------------------------------------------- +4.5V to +18V
● Output Voltage (VOUT) ------------------------------------------------------------------------------------- +0.925V to +14V
● Operation Temperature Range ------------------------------------------------------------------------- -40°C to +85°C
FR9884-1.7-DEC-2011
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4페이지 fitipower integrated technology lnc.
FR9884
Typical Performance Curves (Continued)
85T
VIN = 12V, VOUT = 3.3V, C1 =10μF x 1, C6=100μF x 1, C2 = 22μF x 2, L1 = 10μH, TA = +25°C, unless otherwise noted.
IOUT=0A
IOUT=3A
VIN 50mV/div.
VOUT 20mV/div.
IL 1A/div.
VSW 5V/div.
VIN 500mV/div.
VOUT 20mV/div.
IL 1A/div.
4μs/div.
Figure 11. DC Ripple Waveform
IOUT=0.1A
VEN, 5V/div.
VOUT 1V/div.
IL 2A/div.
VSW 5V/div.
4ms/div.
Figure 13. Startup Through Enable Waveform
IOUT=0.1A
VEN, 5V/div.
VSW 5V/div.
4μs/div.
Figure 12. DC Ripple Waveform
IOUT=3A
VEN, 5V/div.
VOUT 1V/div.
IL 2A/div.
VSW 5V/div.
4ms/div.
Figure 14. Startup Through Enable Waveform
IOUT=3A
VEN, 5V/div.
VOUT 1V/div.
IL 2A/div.
VSW 5V/div.
2ms/div.
Figure 15. Shutdown Through Enable Waveform
FR9884-1.7-DEC-2011
VOUT 1V/div.
IL 2A/div.
VSW 5V/div.
2ms/div.
Figure 16. Shutdown Through Enable Waveform
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7페이지 | |||
구 성 | 총 13 페이지수 | ||
다운로드 | [ FR9884.PDF 데이터시트 ] |
당사 플랫폼은 키워드, 제품 이름 또는 부품 번호를 사용하여 검색할 수 있는 |
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 |
FR9882 | 340KHz Synchronous Step-Down DC/DC Converter | Fiti |
FR9884 | 340KHz Synchronous Step-Down DC/DC Converter | Fiti |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |