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RP506 Series

2A PWM/VFM Step-down DC/DC Converter with Synchronous Rectifier

  • Consumer
  • Industrial
  • Automotive
  • PLP
  • AEC-Q100
  • RoHS

The RP506 Series are low supply current CMOS-based PWM/VFM step-down DC/DC converters with synchronous rectifier. RP506 can be selected from two control types by input signal to the MODE pin - forced PWM control or PWM/VFM auto switching control in which mode automatically switches to high-efficiency VFM mode in low output current.

RP506 includes a soft start circuit, an under-voltage lockout circuit (UVLO), thermal shutdown circuit and a latch protection circuit. By simply using an inductor and capacitors (and resistors) as external components, a high-efficiency step-down DC/DC converter can be easily configured. The oscillator frequency can be selected from 1.2MHz, 2.25MHz or 2.3MHz. The soft start time is Typ. 0.15ms, and by connecting an external capacitor to TSS pin, soft start time is adjustable. VOUT/VFB pin voltage is monitored, and the output voltage errors can be output from PG pin. The PG pin is N-channel open drain output type.

RP506 is offered in a DFN(PLP)2527-10 package for consumer application and a DFN3030-12 package for industrial and automotive applications.

Specs & Datasheets

  Consumer Industrial Automotive
Input Voltage Range 2.5 V to 5.5 V (6.5 V)
Operating Temperature Range -40°C to 85°C (125°C) -40°C to 105°C (125°C) -40°C to 125°C (150°C)
-40°C to 105°C (150°C)
Supply Current Typ. 48 µA(VFM, no load)
Standby Current Typ. 0 µA
Output Voltage Range Internally Fixed Ver.: 0.6 V to 3.3 V (0.1 V step)
Externally Adjustable Ver.: 0.6 V to 4.0 V
Internally Fixed Ver.: 0.8 V, 1.0 V, 1.1 V, 1.2 V, 1.3 V, 1.5 V, 1.8 V, 1.85 V, 3.0 V, 3.3 V
Externally Adjustable Ver.: 0.6 V to 4.0 V
Internally Fixed Ver.: 0.8 V, 1.0 V, 1.1 V, 1.2 V, 1.3 V, 1.5 V, 1.8 V, 1.85 V, 3.0 V, 3.3 V
Externally Adjustable Ver.: 0.6 V to 4.0 V
Output Voltage Accuracy ±1.5% (VSET ≥ 1.2 V , Ta = 25°C)
±18 mV (VSET < 1.2 V)
Output Voltage Temperature Coefficient ±100 ppm/°C
Feedback Voltage Accuracy ±9 mV (VFB = 0.6 V)
Feedback Voltage Temperature Coefficient ±100 ppm/°C
Output Current 2 A
Driver ON-resistance Pch: Typ. 0.130 Ω, Nch: Typ. 0.125 Ω (VIN = 3.6 V)
Oscillator Frequency Typ. 2.25 MHz, 1.2 MHz Typ. 2.3 MHz, 1.2 MHz Typ. 2.3 MHz, 1.2 MHz
Maximum Duty Cycle Min. 100%
Package DFN(PLP)2527-10 DFN3030-12 DFN3030-12

Download Datasheet

Protections / Functions

Functional Description

TSD ILX OCP OVP UVLO OVLO Reverse Shutdown Soft Start SSCG PGOOD Auto Discharge Anti-ringing Sequencing Max Duty Ext. Phase LED Adjust
                   

Technical Documents

Typical Application (Fixed Output Voltage Type)

Typical Application (Fixed Output Voltage Type)

Using Power good function, setting soft- start time for 30ms

Typical Application (Adjustable Output Voltage Type)

Typical Application (Adjustable Output Voltage Type)

Not using Power good function, setting soft-start time for 0.15ms

Efficiency vs. Output Current (A/B/C/G/H/N)

Efficiency vs. Output Current (A/B/C/G/H/N)

Efficiency vs. Output Current (D/E/F/K/L/M)

Efficiency vs. Output Current (D/E/F/K/L/M)

Quality & Packages

Product Name Compatibility Package Marking Reliability
RP506Kxx1x-TR
  • gradeConsumerC
  • plpP
DFN(PLP)2527-10 RP506K RP506K
RP506Lxx1x-TR-Y
  • gradeIndustrialI
  • plpP
DFN3030-12 RP506L RP506L-Y
RP506Lxx1x-TR-K
  • gradeAutomotiveA
  • aecQ1001
  • plpP
DFN3030-12 RP506L RP506L-K
RP506Lxx1x-TR-A
  • gradeAutomotiveA
  • aecQ1001
  • plpP
DFN3030-12 RP506L RP506L-A

Refer to the datasheets for the details on the product.
The package file includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.
Please contact us or our distributors for unpublished reliability information.

Sample / Buy

Functional Description

TSD Thermal Shutdown Function
ILX LX Current Limit Function
OCP Overcurrent Protection
OVP Overvoltage Protection
UVLO Undervoltage Lockout Protection
OVLO Overvoltage Lockout Protection
Reverse Reverse Current Protection Circuit
Shutdown Shutdown Function
Soft Start Soft Start Function
SSCG Spread Spectrum Clock Generator Function
PGOOD Power Good Output
Auto Discharge Auto Discharge Function
Anti-ringing Anti-ringing Switch Function
Sequencing Start-up Sequencing Control
Max Duty Maximum Duty Cycle
Ext. Phase Externally Adjustable Phase Compensation
LED Adjust LED High-speed Dimming Control

Search for similar products under conditions below.

Category:DC/DC Switching Regulators

Topology Buck
VIN
min (V)
2.5
VIN
max (V)
5.5
VOUT
min (V)
0.6
VOUT
max (V)
4.0
IOUT
(mA)
2000
ISS
(µA)
48