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RP514 Series
Low Power Consumption 100mA Buck DC/DC Converter with Battery Monitor

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FEATURES AND BENEFITS

FEATURES AND BENEFITS

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Product Specifications

The RP514 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: 90% with 1.8 V and 100 mA
  • 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 to 4.0 V
Output Voltage Accuracy ±1.5%
Output Current 100 mA
BM Section Output Voltage VIN /3 (RP514xxx3x)
VIN /4 (RP514xxx4x)
Output Voltage Accuracy ±30 mV
Supply Current Typ. 0.1 µA
Packages WLCSP-9-P2, DFN(PLP)2527-10

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

DFN(PLP)2527-10

DFN(PLP)2527-102.7 mm × 2.5 mm
1 VOUT
2 AGND
3 PGND
4 LX
5 LX
6 PVIN
7 AVIN
8 CE1
9 CE2
10 BM

*) The tab on the bottom of the package enhances thermal performance and is electrically connected to GND (substrate level). It is recommended that the tab be connected to the ground plane on the board, or otherwise be left floating.


RP514 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 and the packages are user-selectable options.

Product Name   Package Quantity per Reel
RP514Zxx#$-TR-F Consumer WLCSP-9-P2 5,000
RP514Kxx#$-TR Consumer DFN(PLP)2527-10 5,000
  • xx … Specify the set output voltage for DC/DC (VSET) within the range from 1.0 V (10) to 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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Technical Support

Package *1 Marking Reliability *2
WLCSP-9-P2 RP514Z RP514Z
DFN(PLP)2527-10 RP514K RP514K

*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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