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RP600 Series
500mA PWM/VFM Step-up DCDC Converter with VD and LDO

Product Specifications

RP600 Series are PWM/VFM control step-up DC/DC converters equipped with voltage detector and LDO regulator featuring 500mA output. Step-up DC/DC convertor part has a soft-start circuit. A high-efficiency step-up DC/DC converter can be easily configured by using an inductor, capacitors, a diode as external components. By inputting a signal to MODE pin, RP600 can choose PWM control or PWM/VFM auto switching control. RP600 has the thermal shutdown circuit and small DFN(PLP)2527-10 package is available.

FEATURES

Step-up DC/DC converter part
Input Voltage Range (Maximum Rating) 0.8 V to 5.5 V (6.0V)
Supply Current Typ. 780 µA (VSET1=3.0V, Switching)
Standby Current Typ. 1 µA
Output Voltage Range Fixed: 2.3 V to 5.5 V (0.1V steps)
Adjustable: 2.3 V to 5.5 V (Recommendation range of output voltage)
Output Voltage Tolerance ±2.0%
Frequency Typ. 1.2 MHz
Output Current 500 mA (VIN=2.5V, VOUT=4.5V)
Oscillator Maximum Duty Cycle Min. 80%, Typ. 88%
Soft Start Time Typ. 0.7 ms
Lx peak current control function Typ. 1.4 A
LDO regulator part
Input Voltage Range 2.0 V to 5.5 V (Applied to B version only)
Supply Current Typ. 50 µA (Fast mode)
Output Voltage Range 1.5 V to 5.0 V (0.1V steps)
Output Voltage Tolerance ±1.0%
Turn-on Speed Typ. 100 µs
Maximum Output Current Min. 500 mA guaranteed (A/D version)
Min. 300 mA guaranteed (B version)
Min. 150 mA guaranteed (C version)
Ripple Rejection Typ. 70dB (f=1kHz)
Soft Start Time Typ. 0.2 ms
Voltage Detector Part
Detector Threshold Range 1.0 V to 4.5 V (0.1V steps)
Detector Threshold Accuracy ±2%
Released Output Delay Time Typ. 10 ms (A/B/D version)
Typ. 0 ms (C version)
Detector Threshold Hysteresis Typ. 5% of the detector threshold voltage (A/B/D version)
Selectable in the range from 30% to 80% of the detector threshold voltage (C version)
Others
Thermal shutdown temperature threshold Tj=140°C (A/B/D version only)
Package DFN(PLP)2527-10
External components CIN=10 µF, COUT1=10 µFx2,
L=3.3 µH (If the output of the DC/DC is 3.6V or more, 4.7 µH is our recommendation value.)
COUT2=2.2 µF (B/C version LDO)
COUT2=10 µF (A/D version LDO)

Function version table

  DC/DC LDO VD
Ver. Output Voltage Output Current Input Mode Output Delay
A Fixed 500 mA (depends) DC/DC output Fixed fast mode Yes
B Fixed 300 mA VIN Fast mode / Controlled by MODE*2 Yes
C*1 Fixed 150 mA DC/DC output Fast mode / Controlled by MODE*2 No
D Adjust 500 mA DC/DC output Fixed fast mode Yes

*1: C version: No thermal protection circuit.

*2: Mode pin "L": automatic shift (Iout2≤0.7mA: low power mode, Iout2≥5.0mA: fast mode), Mode pin "H": fast mode

BLOCK DIAGRAM

RP600K0xxA

DC/DC converter; Fixed output voltage.
Voltage Regulator; Power supply is the output of the DC/DC converter. Fast MODE only.
Voltage Detector; "L" output at the detector threshold. With a released output delay time, the hysteresis is fixed 5% of the detector threshold.

RP600K0xxB

DC/DC converter; Fixed output voltage.
Voltage Regulator; Power supply is VIN of this IC. When the DC/DC converter is active, regardless of the MODE signal, the mode is fixed as fast mode.
Voltage Detector; "L" output at the detector threshold. With a released output delay time, the hysteresis is fixed 5% of the detector threshold.

RP600K2xxC

DC/DC converter; Fixed output voltage.
Voltage Regulator; Power supply is the output of the DC/DC converter. Regardless of the CE signal, always turns on. When the DC/DC converter is active, regardless of the MODE signal, the mode is fixed as fast mode.
Voltage Detector; "L" output at the detector threshold. Without a released output delay time, the hysteresis can be set in the range from 30% to 80% of the detector threshold. No thermal protection circuit.

RP600K1xxD

DC/DC converter; Adjustable output voltage.
Voltage Regulator; Power supply is the output of the DC/DC converter. Fast Mode only.
Voltage Detector; "L" output at the detector threshold. With released output delay time, the hysteresis is fixed 5% of the detector threshold.

TYPICAL CHARACTERISTICS

Efficiency vs. Output Current

PIN DESCRIPTION

DFN(PLP)2527-10

DFN(PLP)2527-102.5 mm × 2.7 mm
1 VSENSE
2 VDOUT
3 NC (A version)
CE2 (B version)
TEST** (C version)
VFB (D version)
4 MODE
5 GND
6 Lx
7 CE (A/C/D version)
CE1 (B version)
8 VIN
9 VOUT1
10 VOUT2

*) The tab is substrate level (GND).
**) TEST pin should be connected to the GND pin.


RP600 Series for Consumer

APPLICATIONS

  • Portable equipment such as DSC, cellular phones, electrical dictionaries, IC recorders
  • Blood pressure meter
  • Smoke Detector

SELECTION GUIDE

In the RP600, the output voltage and function type can be selected at the user’s request.

Product Name   Package Quantity per Reel
RP600K0xxA-TR Consumter DFN(PLP)2527−10 5,000
RP600K0xxB-TR
RP600K2xxC-TR
RP600K1xxD-TR
  • xx … Output voltage (DC/DC, LDO, Voltage detector) setting serial number as for C version, the hysteresis range of the voltage detector setting is included.

DOCUMENT/CONTACT

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Technical Support

Package *1 Marking Reliability *2
DFN(PLP)2527-10 RP600K RP600K

*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.

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