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부품번호 | ELM612DA 기능 |
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기능 | 3A 36V PWM step down DC/DC converter | ||
제조업체 | ELM Technology | ||
로고 | |||
ELM612DA 3A 36V PWM step down DC/DC converter
■General description
ELM612DA is a of step-down switching regulator with PWM control, reference voltage source, oscillation
circuit, error amplifier, internal PMOS, etc. ELM612DA provides low-ripple power, high efficiency, and
excellent transient characteristics; PWM control circuit is able to vary the duty ratio linearly from 0 up to 100%.
ELM612DA also contains error amplifier circuit as well as soft-start circuit that prevents overshoot at during
startup. Internal enable function, over current protect function and short circuit protect function will reduce the
operation frequency from 150kHz to 30kHz when overmuch current or short circuit occurs. Meanwhile, internal
compensation block is able to minimize the quantity of required external component. With internal P-channel
Power MOS, and externally connected coil, capacitor, and diode, ELM612DA is able to function as step-
down switching regulator. By the small package of SOP-8, ELM612DA is capable of working as ideal power
supply units for many devices while providing outstanding features such as low current consumption. Since this
converter accommodates input voltage up to 36V, ELM612DA is also suitable for AC adapter applications.
■Features
• Input voltage
: 5.5V to 36V
• Output voltage
: 0.8V to Vin
• Output current
: 3.0A
• Duty ratio
: 0% to 100%
• Constant frequency : Typ.150kHz
• Soft-start
• Thermal shutdown protection
• Short circuit protection
• Built-in internal P-channel MOS
• Package
: SOP-8
■Application
• PC motherboard
• LCD monitor
• Graphic card
• DVD, Blu-ray player
• Telecom equipment
• ADSL modem
• Printer and other peripheral equipment
• Microcomputer power supply
• Network power supply
■Maximum absolute ratings
Parameter
Symbol
Limit
VIN power supply voltage
Vin
-0.3 to +40
Apply voltage to FB
Vfb GND-0.3 to Vin
Apply voltage to EN
Ven GND-0.3 to Vin+0.3
Apply voltage to SW
Vsw GND-0.3 to Vin+0.3
Apply voltage to VC
Vc Vin-20 to Vin+0.3
Power dissipation
Pd 300
Operating temperature range
Top
-40 to +85
Storage temperature range Tstg -65 to +150
Caution: Permanent damage to the device may occur when ratings above maximum absolute ones are used.
Unit
V
V
V
V
V
mW
°C
°C
8 - 1 Rev.1.1
ELM612DA 3A 36V PWM step down DC/DC converter
■Application notes
PWM Control
ELM612DA is DC/DC converter which consists pulse-width modulation (PWM) system. In converters of
ELM612DA, the pulse width varies according toe the load current, within the range from 0 to 100%. The ripple
voltage produced by switching can easily be removed through the filter since switching frequency remains con-
stant; ELM612DA is capable of providing low-ripple power within broad ranges of input voltage and load cur-
rent.
■Test circuits
Vin
Cc=
0.1�F
4 VIN
FB
2 EN
SW
ELM612DA
3 VC GND
1
5, 6
Cin=
330�F
C1
7, 8
D
L=47�H
Cout=
330�F
Vout
R1
RL
C2 R2
■Marking
SOP-8
ELM
612DA
abc
Mark
ELM612DA
abc
Content
Product name
Assembly lot No.:
000 to 999 repeated
8 - 4 Rev.1.1
4페이지 ELM612DA 3A 36V PWM step down DC/DC converter
• Vout=5.0V :
Cin=330µF, Cout=330µF, R1=6.8kΩ, R2=1.3kΩ, C1=0.1μF, C2=0.1μF, L=47µH,
• DV==55A.0/4V0V, Top=25°C
5.2
5.1
5
4.9
4.8
4.7
4.6
1
Vout-Iout
Vin=24V
Vin=12V
Vin=6V
10 100 1000 10000
Iout (mA)
EFFICIENCY-Iout
100
Vin=12V
80 Vin=6V
60
Vin=24V
40
20
0
0.1 1 10 100 1000 10000
Iout (mA)
Vout-Vin
6.0
Iout=1mA
5.0
4.0 Iout=100mA Iout=1A
Iout=10mA
3.0
2.0
1.0
0 4 8 12 16 20 24 28 32 36
Vin (V)
Start Response
Ven=2V, Vin=12V, No load
5
4
3
2
1
0
2
1
0
01234
Time (ms)
8 - 7 Rev.1.1
7페이지 | |||
구 성 | 총 8 페이지수 | ||
다운로드 | [ ELM612DA.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 |
ELM612DA | 3A 36V PWM step down DC/DC converter | ELM Technology |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |