|
|
|
부품번호 | APL431L 기능 |
|
|
기능 | Low Voltage Adjustable Precision Shunt Regulator | ||
제조업체 | ANPEC | ||
로고 | |||
전체 16 페이지수
APL431L
Low Voltage Adjustable Precision Shunt Regulator
Features
General Description
• Precise Reference Voltage to 1.24V
• Guaranteed 0.5%, 1% or 1.5% Reference Voltage
Tolerance
• Sink Current Capability, 80uA to 100mA
• Quick Turn-on
• Adjustable Output Voltage, VO = VREF to 20V
• Low Operational Cathode Current, 80µA Typical
• 0.1Ω Typical Output Impedance
• SOT-23-3, SOT-23-5, TO-92 and SOT-89
Packages
• Lead Free and Green Devices Available
(RoHS Compliant)
Applications
• Linear Regulators
• Adjustable Power Supply
• Switching Power Supply
The APL431L is a 3-terminal low voltage adjustable
precision reference with specified thermal stability
over applicable commercial temperature ranges.
Output voltage may be set to any value between
VREF (1.24 V) and 20 V with two external resistors
(see Figure 2). When used with an photocoupler,
the APL431L is an ideal voltage reference in isolated
feedback circuits for 3V to 12V switching-mode
power supplies. This device has a typical output
impedance of 0.1W. Active output circuitry provides
a very sharp turn-on characteristic, making the
APL431L excellent replacements for zener diodes
in many applications, including on-board regulation
and adjustable power supplies.
Pin Configuration
Symbol
Anode
REF
Cathode
ANODE
3
12
REF CATHODE
NC NC
54
123
REF ANODE CATHODE
Functional Diagram
Cathode
REF
Vref
3 CATHODE
2 ANODE
1 REF
123
REF ANODE CATHODE
Anode
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and
advise customers to obtain the latest version of relevant information to verify before placing orders.
Copyright © ANPEC Electronics Corp.
Rev. B.10 - Mar., 2008
1
www.anpec.com.tw
APL431L
Test Figures (Cont.)
VIN
R1
IREF
Vo
IK
R2 VREF
Figure 3. Test Circuit for V >V ,
KA REF
VO= VKA= VREF× (1+R1/R2) + IREF × R1
Application Circuits
RB
VIN
R1
VREF
R2
Vo
Precision Voltage Reference
VIN
RB
Vo
R1
C1
VREF
R2
Precision High-Current Series Regulator
Notes for Application Circuits:
1) For the series regulator applications, add a compensation capacitor C1 between CATHODE and REF is
strongly recommended to improve the stability of output voltage .
2) Set VO according to the following equation: VO = VREF(1+R1/R2)+lREF xR1
3) Choose the value for RB as follows:
A) The maximum limit for R should be such that the cathode current (l ) is greater than the minimum
BK
operating
current
(80µA)
at
V.
IN(MIN)
B) The minimum limit for R should be such that the cathode current (l ) does not exceed 100mA under all
BK
load conditions, and the instantaneous turn-on value for lK does not exceed 150mA.
Copyright © ANPEC Electronics Corp.
Rev. B.10 - Mar., 2008
4
www.anpec.com.tw
4페이지 APL431L
Typical Characteristics
Gain vs. Phase Shift vs. Frequency
60
50
40
30
20
10
0
-10
10
IKA=10mA
TA =25°C
0
50
100
150
200
250
300
350
100 1000 10000 100000 1000000
Frequency (Hz)
Stability Boundary Conditions
100
90
Unstable
TA =25°C
VKA =VREF
80 VKA =2.5V
70 VKA =3.3V
60
50
40
30 Stable
20
10
0
0.0001
0.001
0.01
0.1
1
CL-Load Capacitance (µF)
VIN
5V
10uF
180Ω
6.8k Ω
4.3kΩ
Vo
Gain & Phase Test Circuit
100Ω
VIN
Vo
IK
CL
Stability Test Circuit for V =V
KA REF
100 Ω
VIN
Vo
IK
R1 CL
R2
Copyright © ANPEC Electronics Corp.
Rev. B.10 - Mar., 2008
Stability Test Circuit for VKA>VREF,
VO= VKA= VREF× (1+R1/R2) + IREF × R1
Use the MLCC for CL
7 www.anpec.com.tw
7페이지 | |||
구 성 | 총 16 페이지수 | ||
다운로드 | [ APL431L.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 |
APL431 | Adjustable Precision Shunt Regulator | Etc |
APL431 | Adjustable Precision Shunt Regulator | ANPEC |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |