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RP506 Series
2A PWM/VFM Step-down DCDC Converter with Synchronous Rectifier

Product Specifications

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.

FEATURES

  Consumer Industrial Automotive
Input Voltage Range (Maximum Rating) 2.5 V to 5.5 V (6.5V)
Operating Temperature Range −40°C to 85°C −40°C to 105°C −40°C to 105°C, −40°C to 125°C
Supply Current Typ. 48 µA (VFM mode, Lx at no load)
Standby Current Typ. 0 µA
Output Voltage Range Fixed Output Voltage Type 0.6 V ~ 3.3 V (0.1V steps) 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
Adjustable Output Voltage Type 0.6 V to 4.0 V (Feedback Voltage : 0.6 V) 0.6 V to 4.0 V (Feedback Voltage : 0.6 V)
Output Voltage Accuracy ±1.5% (VSET*1≥1.2V),
±18 mV (VSET<1.2V) (Fixed Output Voltage Type)
Feedback Voltage Accuracy ±9 mV (VFB=0.6V) (Adjustable Output Voltage Type)
Output Voltage/ Feedback Voltage
Temperature Coefficient
±100 ppm/°C
Oscillator Frequency Typ. 2.25 MHz, 1.2 MHz Typ. 2.3 MHz, 1.2 MHz
Oscillator Maximum Duty Min. 100%
Built-in Driver ON Resistance Typ. Pch. 0.130 Ω, Nch. 0.125 Ω (VIN = 3.6 V)
UVLO Detector Threshold Typ. 2.2 V
Inductor Current Limit Circuit Current limit Typ. 2.8 A
Latch Type Protection Circuit Typ. 1.5 ms
Package DFN(PLP)2527−10 DFN3030−12

*1 VSET = Set Output Voltage

APPLICATION INFORMATION

Fixed Output Voltage Type
Using Power good function, setting soft- start time for 30ms

Adjustable Output Voltage Type
Not using Power good function, setting soft-start time for 0.15ms

TYPICAL CHARACTERISTICS

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

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

PIN DESCRIPTION

DFN(PLP)2527-102.5 mm × 2.7 mm

DFN(PLP)2527-10

1 PVIN**
2 AVIN**
3 PG
4 CE
5 MODE
6 TSS
7 VOUT or VFB
8 AGND**
9 Lx
10 PGND**

*) The tab is substrate level (GND).
**) No.1 pin and No.2 pin, No.8 pin and No.10 pin must be wired together when it is mounted on board.

DFN3030-123.0 mm × 3.0 mm

DFN3030-12

1 PVIN**
2 PVIN**
3 AVIN**
4 PG
5 CE
6 MODE
7 TSS
8 VOUT/ VFB
9 AGND**
10 Lx
11 NC
12 PGND**

*) The tab is substrate level (GND).
**) No.1 pin, No.2 pin and No.3 pin, No.9 pin and No.12 pin must be wired together when it is mounted on board.


RP506 Series for Consumer

APPLICATIONS

  • Power source for Li-ion battery-used equipment
  • Power source for portable communication equipment, camcorder, DSC, Notebook PC
  • Power source for HDD, WLAN

PRODUCT LONGEVITY PROGRAM

RP506 series operate PRODUCT LONGEVITY PROGRAM.
This program has been introduced to help customers select the most appropriate part for applications that require long life cycles.


SELECTION GUIDE

The set output voltage, the output voltage type, the auto-discharge function, and the oscillator frequency for the ICs are user-selectable options.

Product Name   Package Quantity per Reel
RP506Kxx1$(y)-TR ConsumerPLP DFN(PLP)2527−10 5,000
  • xx … Designation of the set output voltage (VSET)
    For Fixed Output Voltage Type: 0.6 V (06) to 3.3 V (33) in 0.1 V steps (0.05 V step is also available as a custom code.)
    For Adjustable Output Voltage Type: 00 only
  • (y) … If VSET includes the 3rd digit, indicate the digit of 0.01 V.
    (1.25 V)
    Ex. If VSET is 1.25 V, RP506K121$5-TR.
  • $ … Designation of Version

* Designation of the set output voltage (xx) and Designation of Version ($)

  Output Voltage Type VSET Auto-discharge
Function
Oscillator Frequency
Forced PWM PWM/VFM
Auto Switching
xx1A Fixed 1.1V to 3.3V 0.8V to 3.3V No 2.25 MHz
xx1B Yes
001C Adjustable 1.1V to 4.0V 0.8V to 4.0V No
xx1D Fixed 0.6V to 3.3V No 1.2 MHz
xx1E Yes
001F Adjustable 0.6V to 4.0V No

* Auto-discharge function quickly lowers the output voltage to 0 V, when the chip enable signal is switched from the active mode to the standby mode, by releasing the electrical charge accumulated in the external capacitor.

DOCUMENT/CONTACT

Purchase

Technical Support

Package *1 Marking Reliability *2
DFN(PLP)2527-10 RP506K RP506K

*1: The package file includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and land pattern (foot pattern).
*2: Reliability file includes a reliability test report and a reflow profile.


RP506 Series for Industrial

This product is a high-reliability semiconductor device for industrial application that has passed both the screening at high temperature and the reliability test with extended hours. Ricoh accommodates requests including the long-time operation and high temperature environment use.


APPLICATIONS

  • Industrial equipments such as FAs and smart meters
  • Equipments used under high-temperature conditions such as surveillance camera and vending machine.
  • Equipments accompanied by self-heating such as motor and lighting.

PRODUCT LONGEVITY PROGRAM

RP506 series operate PRODUCT LONGEVITY PROGRAM.
This program has been introduced to help customers select the most appropriate part for applications that require long life cycles.


Operating Temperature Range : -40°C to 105°C


SELECTION GUIDE

The set output voltage, the output voltage type, the auto-discharge function, and the oscillator frequency for the ICs are user-selectable options.

Product Name   Package Quantity per Reel
RP506Lxx1$-TR-Y IndustrialPLP DFN3030−12 3,000
  • xx … Designation of the set output voltage (VSET)
    For Fixed Output Voltage Type: 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 (0.05 V step is also available as a custom code.)
    For Adjustable Output Voltage Type: 00 only
  • $ … Designation of Version

* Designation of the set output voltage (xx) and Designation of Version ($)

  Output Voltage Type VSET Auto-discharge
Function
Oscillator Frequency
Forced PWM PWM/VFM
Auto Switching
xx1G Fixed 1.1V to 3.3V 0.8V to 3.3V No 2.3 MHz
xx1H Yes
001N Adjustable 1.1V to 4.0V 0.8V to 4.0V No
xx1K Fixed 0.8V to 3.3V No 1.2 MHz
xx1L Yes
001M Adjustable 0.6V to 4.0V No

* Auto-discharge function quickly lowers the output voltage to 0 V, when the chip enable signal is switched from the active mode to the standby mode, by releasing the electrical charge accumulated in the external capacitor.

DOCUMENT/CONTACT

Purchase

Technical Support

Package*1 Reliability*2
DFN3030-12 RP506L (-Y)

*1: The package file includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and land pattern (foot pattern).
*2: Reliability file includes a reliability test report and a reflow profile.


RP506 Series for Automotive

Ricoh is committed to providing a semiconductor device with the highest level of quality and reliability by restricting the device manufacturing only within Ricoh and the cooperative companies successfully passed our stringent inspections for automotive products. Ricoh established a traceability system and manages manufacturing information and logistics information from the warehouse.


Quality Ranks for Applications

Ricoh offers three different quality ranks for automotive products according to their application purposes.
RP506 Series offer products in Rank 2 and Rank 3.

Rank 2: Automotive General Equipments (Body System)

  • Power source for automotive general equipments such as electric window, side mirror, and around view camera

Rank 3: Automotive Accessories

  • Power source for car accessories such as car audio equipment, car navigation system, and ETC system

AEC-Q100 Grade 1 Compliant (Rank 2), AEC-Q100 Grade 2 Compliant (Rank 3)


PRODUCT LONGEVITY PROGRAM

RP506 series operate PRODUCT LONGEVITY PROGRAM.
This program has been introduced to help customers select the most appropriate part for applications that require long life cycles.


Operating Temperature Range : -40°C to 125°C (Rank 2), -40°C to 105°C (Rank 3)


Tjmax 150°C

Unlike the rating of the products for consumer and industrial applications at Tjmax = 125°C, the products for automotive applications are rated at high temperature of Tjmax = 150°C. The power dissipation is also rated at high temperature.


SELECTION GUIDE

The set output voltage, the output voltage type, the auto-discharge function, and the oscillator frequency for the ICs are user-selectable options.

Product Name   Package Quantity per Reel
RP506Lxx1$-TR-K AutomotiveAutomotive General EquipmentsAEC-Q100PLP DFN3030−12 3,000
RP506Lxx1$-TR-A AutomotiveAutomotive AccessoriesAEC-Q100PLP
  • xx … Designation of the set output voltage (VSET)
    For Fixed Output Voltage Type: 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 (0.05 V step is also available as a custom code.)
    For Adjustable Output Voltage Type: 00 only
  • $ … Designation of Version

* Designation of the set output voltage (xx) and Designation of Version ($)

  Output Voltage Type VSET Auto-discharge
Function
Oscillator Frequency
Forced PWM PWM/VFM
Auto Switching
xx1G Fixed 1.1V to 3.3V 0.8V to 3.3V No 2.3 MHz
xx1H Yes
001N Adjustable 1.1V to 4.0V 0.8V to 4.0V No
xx1K Fixed 0.8V to 3.3V No 1.2 MHz
xx1L Yes
001M Adjustable 0.6V to 4.0V No

* Auto-discharge function quickly lowers the output voltage to 0 V, when the chip enable signal is switched from the active mode to the standby mode, by releasing the electrical charge accumulated in the external capacitor.

DOCUMENT/CONTACT

Purchase

Technical Support

Package*1 Reliability*2
DFN3030-12 RP506L (-K)*3
RP506L (-A)

*1: The package file includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and land pattern (foot pattern).
*2: Reliability file includes a reliability test report and a reflow profile.
*3: The reliability information is not listed for devices above rank2. Please contact Ricoh sales representatives for further informations.

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