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부품번호 | LM385 기능 |
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기능 | Adjustable Micropower Voltage Reference | ||
제조업체 | Analog Integrations Corporation | ||
로고 | |||
전체 7 페이지수
LM385/LM385B
Adjustable Micropower Voltage Reference
n FEATURES
l Adjustable from 1.24V to 5.3V.
l Operating Current from 10µA to 20mA.
l Low Temperature Coefficient.
l 1% and 2% Initial Tolerance.
l Low Dynamic Impedance.
n APPLICATIONS
l Portable, Battery-Powered Equipment.
l Instrumentation.
l Process Control.
l Energy Management.
l Product Testing.
l Automotive.
l Precision Audio Components.
n TYPICAL APPLICATION
CIRCUIT
V IN
RS
+
LM385
-
1.24V
IR
FB
Precision 1.24V Voltage Reference
n DESCRIPTION
The LM385 is micropower 3-terminal adjustable
band-gap voltage reference. Operating from
1.24V to 5.3V and over 10µA to 20mA current
range. They feature exceptionally low dynamic
impedance and good temperature stability. On-
chip trimming is used to achieve tight voltage
tolerance. Since the LM385 band-gap reference
uses only transistors and resistors, low noise
and good longterm stability result.
Careful design of the LM385 has made the de-
vice tolerant of capacitive loading, making it
easy to use in almost any reference application.
The wide dynamic operating range allows its
use with widely varying supplies with excellent
regulation.
The extremely low power drain of the LM385
makes it useful for micropower circuitry. This
voltage reference can be used to make portable
meters, regulators or general purpose analog
circuitry with battery life approaching shelf life.
Further, the wide operating current allows it to
replace older references with a tighter tolerance
part.
Analog Integrations Corporation 4F, 9 Industry E. 9th Rd, Science-Based Industrial Park, Hsinchu, Taiwan
TEL: 886-3-5772500
FAX: 886-3-5772510 www.analog.com.tw
DS-385B-01 012102
1
LM385/LM385B
n TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
1.27
5
IR=100µA
4
1.25
3
1.23
1.21
-50
0
50 100 125
Temperature (°C)
Fig. 3 Temperature Drift of 3 Representative Units
2
1
0
0.01
TA= -55°C
TA= 25°C
TA= 80°C
0.1 1
10
Reverse Current (mA)
Fig. 4 Reverse Characteristics
100
80
60
40
20
0
12 345 6
Output Voltage (V)
Fig. 5 Minimum Operating Current
5
4 Input
3
Output
50K
VOUT
2 + 120K
1-
364K
0
10
Input
0
-50 0 50 100 150 200 250
Time (µS)
Fig. 7 Response Time
10
8
6
4
2
0
-20
0
IR=100µA
VOUT=VREF
VOUT=5.3V
20 40 60 80
Temperature ( °C)
Fig. 6 Feedback Current
100 120
10K
1K
100
V OUT=5.3V
V OUT= VREF
IR=100µA
10
10
100 1K
10K 100K
Frequency (Hz)
Fig. 8 Output Noise Voltage (nV / Hz )
4
4페이지 l TO-92 (unit: mm)
A
D
LE
C
e1
l 8 LEAD PLASTIC SO (unit: mm)
D
H
E
e
A
C
B
L
LM385/LM385B
SYMBOL
A
C
D
E
e1
L
MIN MAX
4.32
5.33
0.38 (TYP.)
4.40
5.20
3.17
4.20
1.27 (TYP.)
12.7
-
SYMBOL
A
A1
B
C
D
E
e
H
L
MIN MAX
1.35 1.75
0.10 0.25
0.33 0.51
0.19 0.25
4.80 5.00
3.80 4.00
1.27(TYP)
5.80 6.20
0.40 1.27
7
7페이지 | |||
구 성 | 총 7 페이지수 | ||
다운로드 | [ LM385.PDF 데이터시트 ] |
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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 ] |
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DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |