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RP517 Series
0.3V Low Output Voltage Low Quiescent Current 300mA Buck DC/DC Converter

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FEATURES AND BENEFITS

FEATURES AND BENEFITS

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Product Specifications

RP517 is a low-voltage resistance buck DC/DC converter featuring ultra-low 0.3 µA quiescent current and 0.3 V output voltage. Suitable for wearable and IoT devices which require long-life batteries and downsizing.

  • Ultra-low consumption current (IQ: 0.3 µA) with the VFM control for DC/DC (switching frequency: 1 MHz max.)
  • Suitable for low power devices due to its ultra-low output voltage range from 0.3 V to 1.2 V
  • Suitable for coin batteries and USB ports due to its wide input range from 1.8 V to 5.5 V
  • Selectable 3 packages: WLCSP, DFN and SOT. Suitable for IC cards due to WLCSP’s thickness of 0.4 mm and less.

FEATURES

Input Voltage Range (Maximum Rating) 1.8 V to 5.5 V (6.5V)
Operating Quiescent Current (IQ) 0.3 µA
Standby Current 0.01 µA
Output Voltage Range 0.3 V to 1.2 V (Settable in 0.1 V step)
Output Voltage Accuracy ±18 mV
Output Current 300 mA
Built-in Driver On-resistance (VIN = 3.6 V) Typ. PMOS 0.15 Ω, NMOS 0.15 Ω (RP517Z)
Package WLCSP-8-P1, DFN(PLP)2527-10, SOT-89-5

APPLICATION INFORMATION

TYPICAL CHARACTERISTICS

Efficiency vs. Output Current (VOUT = 0.5 V)

PIN DESCRIPTION

WLCSP-8-P1

WLCSP-8-P11.45 mm × 1.48 mm
A1 VIN
B1 VIN
C1 LX
A2 VOUT
C2 GND
A3 CE
B3 GND
C3 GND

DFN(PLP)2527-10

DFN(PLP)2527-102.7 mm × 2.5 mm
1 VOUT
2 GND
3 GND
4 LX
5 LX
6 VIN
7 VIN
8 NC
9 CE
10 NC

*) The tab is substrate level (GND).

SOT-89-5

SOT-89-54.5 mm × 4.35 mm
1 VOUT
2 GND
3 LX
4 VIN
5 CE

RP517 Series for Consumer

APPLICATIONS

  • Wearable equipment such as SmartWatch, SmartBand, and Health monitoring
  • Li-ion battery-used equipment, Coin cell-used equipment
  • Low power RF such as Bluetooth® Low Energy, Zigbee, WiSun, and ANT
  • Low power CPU, Memory, Sensor device, and Energy harvester

SELECTION GUIDE

The set output voltage, the auto-discharge function and the packages are user-selectable options.

Product Name   Package Quantity per Reel
RP517Zxx1$-TR-F Consumer WLCSP−8−P1 5,000
RP517Kxx1$-TR Consumer DFN(PLP)2527-10 5,000
RP517Hxx1$-T1-FE Consumer SOT-89-5 1,000
  • xx … Specify the set output voltage (VSET)
    Fixed Output Voltage Type: 0.3 V (03) to 1.2 V (12) in 0.1 V step (The custom specification of 0.05 V step is available.)
  • $ … Designation of Version
    C: without auto-discharge function
    D: with auto-discharge function

* 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

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Package *1 Marking Reliability *2
WLCSP-8-P1 RP517Z RP517Z
DFN(PLP)2527-10 RP517K RP517K
SOT-89-5 RP517H RP517H

*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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