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부품번호 | AX3114 기능 |
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기능 | PWM Control 2A Step-Down Converter | ||
제조업체 | AXElite | ||
로고 | |||
www.DataSheet.in
AX3114
PWM Control 2A Step-Down Converter
GENERAL DESCRIPTION
AX3114 consists of step-down switching regulator with PWM control. These
devise include a reference voltage source, oscillation circuit, error amplifier, internal
PMOS and etc.
AX3114 provides low-ripple power, high efficiency, and excellent transient
characteristics. The PWM control circuit is able to the duty ratio linearly form 0 up to
100%. An enable function, an over current protect function and short circuit protect
function are built inside, and when OCP or SCP happens, the operation frequency
will be reduced. Also, an internal compensation block is built in to minimum external
component count.
With the addition of an internal P-channel Power MOS, a coil, capacitors, and a
diode connected externally, these ICs can function as step-down switching regulators.
They serve as ideal power supply units for portable devices when coupled with the
SOP-8L package, providing such outstanding features as low current consumption.
Since this converter can accommodate an input voltage up to 23V, it is also suitable
for the operation via an AC adapter.
FEATURES
- Input voltage:4.5V to 23V
- Output voltage:1.222V to Vcc
- Duty ratio:0% to 100% PWM control
- Oscillation frequency:380KHz typ.
- Current Limit (CL), Enable function.
- External Soft-Start function.
- Thermal Shutdown function.
- Short Circuit Protect (SCP).
- Built-in internal SW P-channel MOS.
- SOP-8L Pb-Free package.
1/8
Axelite Confidential Materials, do not copy or distribute without written consent. www.micro-bridge.com
Rev.1.0 Jul.30, 2008
www.DataSheet.in
PWM Control 2A Step-Down Converter AX3114
Application Circuit
VIN+12V
ON/OFF
C3 C4
330uF 0.1uF
C8
1nF
C9
10nF
2 VCC
7 EN
8 SS
4 VSS
AX3114
SW 3
NC 1
NC 6
FB 5
L1
12
22uH
D1
B340
R2
5.6K
R4
3.3K
VOUT = 3.3V/2A
C6
0.1uF
C5
470uF
VOUT = VFB x (1 +
R2
R4
)
VFB = 1.222V ; R4 suggest 0.8K ~ 6k
L1 recommend value (VIN=12V ,IOUT=2A,)
VOUT 1.8 V 2.5V 3.3V
5V
L1
15uH
15uH
22uH
22uH
4/8
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.0 Jul.30, 2008
4페이지 www.DataSheet.in
PWM Control 2A Step-Down Converter AX3114
Typical Characteristics
5
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
4.5
VIN VS Quiescent Current
5 10 15 20
VIN (V)
23
100
90
80
70
60
50
40
30
20
10
0
4.5
VIN VS Standby Current
5 10 15 20
VIN (V)
23
Load VS Vout
3.5
3.45
3.4
3.35
3.3
3.25
3.2
3.15
3.1
0 10 50 100 200 500 1000 1500 2000
Load (A)
Temperaure VS VFB
1.26
1.25
1.24
1.23
1.22
1.21
1.2
1.19
-40
-25
0 25 50 75 100
Temperaure (℃)
Efficiency Test (VIN=12V)
100
95 VOUT=5V
90
85
80 VOUT=3.3V
75
70
65
60
55
50
0.5
1 1.5
Load (A)
2
VEN
Vout
PWM
ISW
7/8
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.0 Jul.30, 2008
7페이지 | |||
구 성 | 총 8 페이지수 | ||
다운로드 | [ AX3114.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 |
AX3111 | PWM Control 3A Step-Down Converter | AXElite |
AX3111A | PWM Control 2A Step-Down Converter | AXElite |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |