4.3-5.5V 2.5A 1ch LDO - BD3506FThe BD3506F is an ultra-low dropout linear regulator for chipset that can achieve ultra-low voltage input to ultra-low voltage output. By using N-MOS FET for built-in power transistor, the regulator can be used at ultra-low I / O voltage difference up to voltage difference generated by ON resistor (RON = 120 m?). Because by reducing the I / O voltage difference, large current (Iomax = 2.5A) output is achieved and conversion loss can be reduced, switching power supply can be replaced. BD3506F does not need any choke coil, diode for rectification and power transistor which are required for switching power supply, total cost of the set can be reduced and compact size can be achieved for the set. Using external resistors, optional output from 0.65V to 2.5V can be set. In addition, since voltage output start-up time can be adjusted by using the NRCS terminal, it is possible to meet the power supply sequence of the set.
| ||||
| * This product is a STANDARD grade product and not recommend for on-vehicle devices. | ||||
| Grade | Standard |
| Breakdown Voltage(Max.)[V] | 7.0 |
| ch | 1 |
| Vin(Min.)[V] | 4.3 |
| Vin(Max.)[V] | 5.5 |
| Vin 2ch[V] | 1.2 to Vcc-1 |
| Vout (Typ.) [V] | 0.65 to 2.5 |
| Vout Precision | ±1.0 |
| Iout(Max.)[A] | 2.5 |
| Thermal Shut-down | Recover |
| Over Current Protection | Yes |
| Under Voltage Lock Out | Yes |
| Soft Start | Variable |
| Operating Temperature (Min.)[°C] | -10 |
| Operating Temperature (Max.)[°C] | 100 |
- ・Built-in high-accuracy reference voltage circuit (0.65V±1%)
・Built-in VCC low input maloperation prevention circuit (Vcc = 4.15V)
・Reduced rush current by NRCS
・Built-in ultra-low on-resistor (120 mΩ typ) Nch Power MOSFET
・Built-in current limiting circuit (2.5A min)
・Built-in thermal shutdown circuit
・Output variable type (0.65-2.5V)
・Adoption of SOP8 package (BD3506F) : 5.0 x 6.2 x 1.5 (mm)
Thermal Resistance
Basics of Linear Regulators
Linear Regulator Specifications
Reverse Voltage Protection
Simple Test Method for Estimating the Stability of Linear Regulators
Thermal Calculation for Linear Regulator
Power Source ON/OFF Characteristics for Linear Regulator
BAxxCC0 Series Circuit Using a Ceramic Output Capacitor
Measurement Method for Phase Margin with Frequency Response Analyzer (FRA)
For ICs
Table of resistance for output voltage setting on linear regulator Ics