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RP515 Series
Low Power Consumption 300mA Buck DC/DC Converter with Battery Monitor

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Product Specifications

The RP515 is a buck DC/DC converter with a Battery Monitor (BM) featuring ultra-low current and low-voltage resistance. The battery monitor divides the input voltage (VIN) into 1/3 or 1/4 to a buffer output and inputs a signal directly into the MCU’s built-in low voltage AD converter without external circuits. It is suitable for use in wearable and IoT devices that require miniaturization and long-lifetime of battery.

  • Ultra-low consumption current (IQ: 0.3 µA) with the VFM control for DC/DC (switching frequency: 1 MHz max.)
  • High efficiency under light load conditions
  • Reducing components and space by combining DC/DC and BM into a single chip
  • Suitable for coin batteries and USB ports due to its wide input voltage range from 1.8 V to 5.5 V

FEATURES

DC/DC Section Input Voltage Range (Maximum Rating) 1.8 V to 5.5 V (6.5 V)
Operating Quiescent Current (IQ) Typ. 0.3 µA
Standby Current Typ. 0.01 µA
Output Voltage 1.0 V / 1.2 V / 1.5 V / 1.8 V / 2.4 V / 2.5 V / 2.8 V / 3.0 V / 3.1 V / 3.3 V / 3.6 V / 4.0 V
Output Voltage Accuracy ±1.5%
Output Current 300 mA
BM Section Output Voltage VIN /3 (RP515xxx3x)
VIN /4 (RP515xxx4x)
Output Voltage Accuracy ±30 mV
Supply Current Typ. 0.1 µA
Package WLCSP-9-P2

APPLICATION INFORMATION

TYPICAL CHARACTERISTICS

Efficiency vs. Output Current (VOUT = 1.8 V)

PIN DESCRIPTION

WLCSP-9-P2

WLCSP-9-P21.45 mm × 1.48 mm
A1 AVIN
B1 PVIN
C1 LX
A2 CE1
B2 CE2
C2 PGND
A3 BM
B3 VOUT
C3 AGND

RP515 Series for Consumer

APPLICATIONS

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

SELECTION GUIDE

The set output voltage for DC/DC, the division ratio of BM output voltage, the auto-discharge function for DC/DC are user-selectable options.

Product Name   Package Quantity per Reel
RP515Zxx#$-TR-F Consumer WLCSP-9-P2 5,000
  • xx … Specify the set output voltage for DC/DC (VSET).
    1.0 V (10) / 1.2 V (12) / 1.5 V (15) / 1.8 V (18) / 2.4 V (24) / 2.5 V (25) / 2.8 V (28) / 3.0 V (30) / 3.1 V (31) / 3.3 V (33) / 3.6 V (36) / 4.0 V (40)
  • # … Select the division ratio of BM output voltage.
    3: VIN /3
    4: VIN /4
  • $ … Select the auto-discharge option for DC/DC.
    A: DC/DC auto-discharge is not included
    B: DC/DC auto-discharge is included

* 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-9-P2 RP515Z RP515Z

*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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