|
|
|
부품번호 | BD3540NUV 기능 |
|
|
기능 | Nch FET Ultra LDOs | ||
제조업체 | ROHM Semiconductor | ||
로고 | |||
전체 19 페이지수
Hi-performance Regulator IC Series for PCs
Nch FET Ultra LDOs
for Desktop PCs Chipsets with Power Good
BD3540NUV, BD3541NUV
No.09030EBT04
●Description
The BD3540NUV, BD3541NUV low-voltage output linear 1ch series chipset regulator IC operates from a very low input
supply, and offers ideal performance in low input voltage to low output voltage applications. It incorporates a built-in
N-MOSFET power transistor to minimize the input-to-output voltage differential to the ON resistance (RON=200mΩ~
400mΩ) level. By lowering the dropout voltage in this way, the regulator realizes high current output (Iomax=0.5A~1.0A)
with reduced conversion loss, and thereby obviates the switching regulator and its power transistor, choke coil, and rectifier
diode. Thus, the BD3540NUV, BD3541NUV are designed to enable significant package profile downsizing and cost
reduction. An external resistor allows the entire range of output voltage configurations between 0.65 and 2.7V, while the
NRCS (soft start) function enables a controlled output voltage ramp-up, which can be programmed to whatever power
supply sequence is required.
●Features
1) High-precision voltage regulator(0.65V±1%)
2) Built-in VCC undervoltage lockout circuit
3) NRCS (soft start) function reduces the magnitude of in-rush current
4) Internal Nch MOSFET driver offers low ON resistance
5) Built-in current limit circuit
6) Built-in thermal shutdown (TSD) circuit
7) Variable output
8) Small package VSON010V3030 : 3.0×3.0×1.0(mm)
9) Tracking function
●Applications
Notebook computers, Desktop computers, LCD-TV, DVD, Digital appliances
●Line-up
It is available to select power supply voltage and maximum output voltage.
Maximum Output Voltage
Package
Vcc=5V
0.5A
1.0A
VSON010V3030
BD3540NUV
BD3541NUV
www.rohm.com
© 2009 ROHM Co., Ltd. All rights reserved.
1/16
2009.04 - Rev.B
BD3540NUV, BD3541NUV
●Reference Data(BD3540NUV)
Technical Note
Vo
50mV/div
13mV
Vo
50mV/div
29mV
Vo
50mV/div
38mV
Io
0.5A/div
0.5A
Io=0A→1A/μsec
t(10μsec/div)
Fig.1 Transient Response
(0→0.5A)
Co=100μF, Cfb=1000pF
Io
0.5A/div
0.5A
Io
0.5A/div
0.5A
Io=0A→1A/μsec
t(10μsec/div)
Fig.2 Transient Response
(0→0.5A)
Co=47μF, Cfb=1000pF
Io=0A→1A/μsec
t(10μsec/div)
Fig.3 Transient Response
(0→0.5A)
Co=22μF, Cfb=1000pF
Vo
50mV/div
13mV
Vo
50mV/div
25mV
Vo
50mV/div
35mV
Io
0.5A/div
0.5A
Io=1A→0A/μsec
t(100μsec/div)
Fig.4 Transient Response
(0.5→0A)
Co=100μF, Cfb=1000pF
●Reference Data(BD3541NUV)
Io
0.5A/div
0.5A
Io=1A→0A/μsec
t(100μsec/div)
Fig.5 Transient Response
(0.5→0A)
Co=47μF, Cfb=1000pF
Io
0.5A/div
0.5A
Io=1A→0A/μsec
t(100μsec/div)
Fig.6 Transient Response
(0.5→0A)
Co=22μF, Cfb=1000pF
Vo
50mV/div
42mV
Vo
50mV/div
53mV
Vo
50mV/div
59mV
Io
1A/div
1.0A
Io
1A/div
1.0A
Io
1A/div
1.0A
Fig.7 Transient Response
(0→1.0A)
Co=100μF, Cfb=1000pF
Fig.8 Transient Response
(0→1.0A)
Co=47μF, Cfb=1000pF
Fig.9 Transient Response
(0→1.0A)
Co=22μF, Cfb=1000pF
Vo
50mV/div
42mV
Vo
50mV/div
51mV
Vo
50mV/div
57mV
Io
1A/div
1.0A
Fig.10 Transient Response
(1.0→0A)
Co=100μF, Cfb=1000pF
Io
1A/div
1.0A
Fig.11 Transient Response
(1.0→0A)
Co=47μF, Cfb=1000pF
www.rohm.com
© 2009 ROHM Co., Ltd. All rights reserved.
4/16
Io
1A/div
1.0A
Fig.12 Transient Response
(1.0→0A)
Co=22μF, Cfb=1000pF
2009.04 - Rev.B
4페이지 BD3540NUV, BD3541NUV
●Block Diagram
VCC
1
C1
EN
2
Reference
Block
UVLOCL
VCC
Current
Limit
Thermal
Shutdown
TSD
CL
UVLO
TSD
EN
NRCS
Power
Good
VIN
5
VIN
C2
6 Vo
7 Vo R1
8
FB R2
Vo
CFB
C3
9
NRCS
CNRCS
10
GND
4 PGDLY
CPGDLY
3 PG
Technical Note
●Pin Function Table
PIN No.
1
2
3
4
5
6
7
8
9
10
PIN name
VCC
EN
PG
PGDLY
VIN
VO
VO
FB
NRCS
GND
PIN Function
Power supply pin
Enable input pin
Power Good pin
Power Good Delay capacitor connection pin
Input voltage pin
Output voltage pin
Output voltage pin
Reference voltage feedback pin
In-rush current protection (NRCS) capacitor connection pin
Ground pin
●Pin Layout
◎VSON010V3030
3.0±0.1
BD3
54 ×
Lot No.
S
0.08 S
Lot No.
C0.25 2.0±0.1
15
10 6
0.5 0.5 0.25+-00..0045
(Unit : mm)
www.rohm.com
© 2009 ROHM Co., Ltd. All rights reserved.
7/16
2009.04 - Rev.B
7페이지 | |||
구 성 | 총 19 페이지수 | ||
다운로드 | [ BD3540NUV.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 |
BD3540NUV | Nch FET Ultra LDOs | ROHM Semiconductor |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |