BD37201NUX Datasheet, PDF (1/22 Pages) Rohm – Ultra Low Noise Low Dropout Regulator for Audio System

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
V_IN=5.0V
VIN
C_IN
1µF _EN
R₂
51kΩ
R₁ ^BAS
120kΩ _BAO
VO
VS
BC
GND
V_OUT=3.35V
C_OUT
1µF
C_BC
1µF
Clock
Generator
DAC
Figure 1. Basic Application Circuit Diagram (VOUT=3.35V)
〇Product structure : Silicon monolithic integrated circuit
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TSZ22111・14・001
〇This product has no designed protection against radioactive rays
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TSZ02201-0V3V0A600100-1-2
18.Apr.2016 Rev.001