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PDF BD37201NUX Data sheet ( Hoja de datos )
| Número de pieza | BD37201NUX | |
| Descripción | Ultra Low Noise Low Dropout Regulator | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Datasheet
Low Noise Power Supply LSI Series for Audio System
Ultra Low Noise Low Dropout Regulator for
Audio System
BD37201NUX
General Description
BD37201NUX is a low saturation series regulator of
low noise (4.72µVrms) which is most suitable to high
quality audio system. It operates at 2.7V to 5.5V and
capable of supplying a maximum load of 500mA.
BD37201NUX has a high PSRR and good input
transient fluctuation characteristic which makes it
suitable for the stabilization of DC/DC converter output,
and an ideal power supply to high precision analog
circuits such as D/A converter (DAC) or Clock
generator.
Furthermore, when BD37201NUX is placed in standby
mode, the supply current can be as small as 0µA(Typ)
which can greatly reduce power consumption.
Key Specifications
■ Input Voltage Range:
2.7V to 5.5V
■ Output Voltage Range:
1.0V to 4.5V
■ Output Current:
0.5A(Max)
■ Output Voltage Noise: 4.72µVrms(10 to 100kHz)
■ PSRR:
74dB(100Hz), ≥50dB(1MHz)
■ Input Transient Response:
≤5mV(1.0V/µs)
■ Standby Current:
0µA(Typ)
■ Operating Temperature Range: -40°C to +85°C
Package
VSON008X2030
W(Typ) x D(Typ) x H(Max)
2.00mm x 3.00mm x 0.60mm
Features
■ Ultra Low Noise, High PSRR
■ Stable at 1µF ceramic input and output capacitors
■ Standby Mode that is controlled by Enable pin
■ Dropout Voltage: 200mV (at 500mA load)
■ Under Voltage Lockout Protection, Current Limit
and Short Circuit Protection, Thermal Shutdown
Protection
Applications
■ High quality audio equipment
■ Power supply for D/A converter and Clock
generator
■ The other application which require low noise
VSON008X2030
Typical Application Circuit
Switching
Regulator
VIN=5.0V
CIN
1µF
VIN
EN
R2
51kΩ
R1 BAS
120kΩ BAO
VO
VS
BC
GND
VOUT=3.35V
COUT
1µF
CBC
1µF
Clock
Generator
DAC
Figure 1. Basic Application Circuit Diagram (VOUT=3.35V)
〇Product structure : Silicon monolithic integrated circuit
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
〇This product has no designed protection against radioactive rays
1/18
TSZ02201-0V3V0A600100-1-2
18.Apr.2016 Rev.001
1 page  
BD37201NUX
Electrical Characteristics (Unless otherwise specified, VIN= VOUT+1.0V or 2.7V whichever is greater VOUT=1.0V
Ta=25°C COUT=1µF CBC=1µF IOUT=5mA VIN=VEN)
Parameter
Symbol
MIN TYP MAX
Unit
Conditions
Circuit Current
Standby Current
Reference Voltage
Line Regulation
Load Regulation
Dropout Voltage
PSRR 1kHz
PSRR 1MHz
Output Noise Voltage
Output Current Capability
UVLO Detect Voltage
UVLO Release Voltage
EN Detecting Voltage Range
EN Release Voltage Range
EN Input Current
ICC
ISTB
VREF
DVI
DVL
VSAT
PSRR1kHz
PSRR1MHz
VNOISE
IOCP
VUVLOH
VUVLOL
VTHENH
VTHENL
IEN
-
-
0.99
-
-
-
-
-
-
500
2.10
2.25
2.20
0.00
-
1.33
0.0
1.00
1
3
0.2
90
55
4.7
-
2.30
2.45
-
-
1.23
2.3
1.0
1.01
20
20
0.5
-
-
-
-
2.50
2.65
VIN
0.60
2.10
mA
μA
V
mV
mV
V
dB
dB
μVrms
mA
V
V
V
V
µA
-
VIN=5.5V
BAS Voltage
VIN= 2.7V to 5.5V
IOUT= 0mA to 500mA
IOUT= 500mA
f= 1kHz
f= 1MHz, COUT=47µF
BW= 10Hz to 100kHz,
CBC=10µF, IOUT= 500mA
-
-
-
-
-
VEN= 3V
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
5/18
TSZ02201-0V3V0A600100-1-2
18.Apr.2016 Rev.001
5 Page 
BD37201NUX
1. Application Examples
VIN=2.7V
CIN
1µF
VIN
EN
BAS
BAO
VOUT=1.0V
VO
COUT
VS 1µF
BC
GND
CBC
1µF
Parts
CIN
COUT
CBC
(Note※) T hi本s a応pp用lica例tioはn e一xa例mpでleあisりju、st実on際e cのas設e. A定ctにuaおl sいettiてngはwiセll bッeトでの
de十cid分edなaf評ter価a t・h検oro証ugのh e上va、lu決ati定on願anいd vまerすific。ation.
Maker
Murata
Murata
Murata
Value
1µF
1µF
1µF
Parts
GCM188R71E105KA49
GCM188R71E105KA49
GCM188R71E105KA49
Figure 24. Application Circuit 1 (VOUT=1.0V)
VIN=5.0V
VIN
CIN
1µF EN
R2
51kΩ
R1 BAS
120kΩ
BAO
VO
VS
BC
GND
VOUT=3.35V
COUT
1µF
CBC
1µF
Parts
R1
R2
CIN
COUT
CBC
(Note※) Th is本ap応pl用ica例tionはex一am例plでe isあjuりst、o実ne際caのse.設Ac定tuaにl sおettいingてwはill bセe ットでの
d ec十ide分d aなfte評r a価th・o検rou証ghのev上alu、a決tion定an願d いverまificすati。on.
Maker
ROHM
ROHM
Murata
Murata
Murata
Value
120kΩ
51kΩ
1µF
1µF
1µF
Part Number
MCR03EZPD
MCR03EZPD
GCM188R71E105KA49
GCM188R71E105KA49
GCM188R71E105KA49
Figure 25. Application Circuit 2 (VOUT=3.35V)
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
11/18
TSZ02201-0V3V0A600100-1-2
18.Apr.2016 Rev.001
11 Page | ||
| Páginas | Total 22 Páginas | |
| PDF Descargar | [ Datasheet BD37201NUX.PDF ] | |
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