BD900N1WG-C
Nano Cap™, QuiCur™, 150mA, Adjustable Output LDO Regulator for Automotive
BD900N1WG-C
Nano Cap™, QuiCur™, 150mA, Adjustable Output LDO Regulator for Automotive
The BD900N1WG-C is linear regulator using the Nano Cap™ topology designed as low current consumption products for power supplies in various automotive applications requiring a direct connection to the battery. This product is designed for up to 45V as an absolute maximum voltage and to operate until 150mA for the output current with low current consumption 28μA(Typ). This can regulate the output with a very high accuracy ±2.0%.
What is Nano Cap™?
Nano Cap™ is a combination of technologies which allow stable operation even if output capacitance is connected with the range of nF unit.
What is QuiCur™?
QuiCur™ is a combination of technologies that provides high-speed load response.
Product Detail
Functional Safety:
Specifications:
ch
1
Withstand Voltage (Max.)[V]
45
Vin(Min.)[V]
4.5
Vin(Max.)[V]
42
Iout(Max.)[A]
0.15
Vout Type
Adjustable
Vout Accuracy
±2.0%
Circuit Current[mA]
0.028
Dropout Voltage (Typ.)[V]
0.50(Io=0.1A)
Ripple Rejection [dB]
70
Load Regulation[mV]
0.1%(Io=0 to 150mA)
Output Capacitor[µF]
0.05
Technology
Nano Cap™
Shutdown Function
Yes
Thermal Shut-down
Yes
Over Current Protection
Yes
Over Voltage Protection
No
Under Voltage Lock Out
Yes
Discharge Function
Yes
Soft Start
No
Operating Temperature (Min.)[°C]
-40
Operating Temperature (Max.)[°C]
125
Common Standard
AEC-Q100 (Automotive Grade)
Features:
- Nano Cap™ Topology
- QuiCur™ Topology
- AEC-Q100(Grade 1)
- Automotive grade
- Over Current Protection(OCP)
- Thermal Shutdown Protection(TSD)
- Under Voltage Lock Out(UVLO)
Supporting Information
Background
In recent years, the continuing digitization of all types of equipment has been increasing the number of electronic components, which in turn has been driving the demand to reduce the number of capacitors used for circuit stabilization to shrink both the size and the bill of material (BOM). This requires power supply ICs in power supply circuits that can achieve stable operation with small sized capacitors, but until now it had been difficult to achieve stable operation in applications with output capacitances of 1μF or less.
New Product Details
The new BD9xxN1 series of automotive primary LDOs meets the basic requirements of automotive products, such as operation above 125°C, qualification under the AEC-Q100 automotive reliability standard, and input voltages greater than 40V for the primary power supply. Incorporating ROHM’s Nano Cap™ ultra-stable control technology supports an output capacitance of 100nF, which is less than 1/10 of the value of standard products, to ensure stable operation required by applications (output voltage variation within 100mV: condition is 1mA ⇔ 50mA/1μs load current variation) even when the input voltage and load current fluctuate. This makes it possible to provide high performance with a good balance in terms of output capacitance range and response characteristics.
Application Examples
◇Powertrain (i.e. fuel injection) and tire pressure monitoring systems (TPMS)
◇Body systems (e.g. body control modules)
◇ADAS (e.g. Domain Controllers, ECUs, Zonal processing)
◇AInfotainment including instrument clusters and head-up displays (HUD)
Suitable for a wide range of applications in addition to automotive primary power supply systems.
Support Tools
As a simulation model for verifying these new products, ROHM Real Model is a high accuracy SPICE model that utilizes original model-based technology to faithfully reproduce the electrical and temperature characteristics of the actual IC, resulting in an outstanding match between the IC and simulation values such as “load response” waveform which is difficult to reproduce. This ensures reliable verification, contributing to more efficient application development – for example by preventing rework after prototyping.
ROHM Real Model is now available on ROHM’s website at:
Reference Design / Application Evaluation Kit
-
- Reference Design - REF66009
- LogiCoA™ Solution BUCK Converter (12V Input, 5V Output, 25W)
LogiCoA001-EVK-001 is a reference design for a BUCK converter that uses ROHM's analog-digital fusion control technology LogiCoA™, which includes a microcontroller ML62Q2035 suitable for LogiCoA™, a 100V gate driver BD2320EFJ-LA, LDO BD950N1WG-C, BD900N1WG-C, operational amplifier BU7481SG, and shunt resistor LTR100LJZPFSR020. Design data, sample software, and an operating system for power supply control are available for this reference design, as well as a reference board. We hope that you will have a chance to experience the analog-digital fusion control LogiCoA™ and make use of it in your future power supply device development.
Reference Program
We offer a reference program comprising an OS for power control and firmware for BUCK converter control. Additionally, we provide a communication GUI that allows communication from a Windows PC. Please utilize these as design references. Reference Program and Communication GUI are available here.
- LogiCoA™ Solution Buck Converter Reference Program
- LogiCoA™ Solution Buck Converter Communication GUI (Excel file)
