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ELM612DA 데이터시트 PDF




ELM Technology에서 제조한 전자 부품 ELM612DA은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


PDF 형식의 ELM612DA 자료 제공

부품번호 ELM612DA 기능
기능 3A 36V PWM step down DC/DC converter
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ELM612DA 데이터시트, 핀배열, 회로
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 pdf, 반도체, 판매, 대치품
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=
0.1F
4 VIN
FB
2 EN
SW
ELM612DA
3 VC GND
1
5, 6
Cin=
330F
C1
7, 8
D
L=47H
Cout=
330F
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

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ELM612DA 전자부품, 판매, 대치품
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

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관련 데이터시트

부품번호상세설명 및 기능제조사
ELM612DA

3A 36V PWM step down DC/DC converter

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