Nisshinbo RP509Z Evaluation Boards
Nisshinbo Micro Devices RP509Z Evaluation Boards are based on the RP509Z series of low-supply-current PWM/VFM step-down DC/DC converters. The RP509Z features a synchronous rectifier with 0.5A/1A output current. The RP509Z is housed in a WLCSP-6-P6 package, enabling high-density board mounting. The Nisshinbo Micro Devices RP509Z Evaluation Boards use 0402-/1005-size (inch/mm) capacitors and 0603-/1608-size (inch/mm) inductors as external parts, helping to save space for devices.
Features
- Input voltage range (maximum rating) 2.3V to 5.5V (6.5V)
- Output voltage range (fixed output voltage type) 0.6V to 3.3V, settable in 0.1V steps (adjustable output voltage type) 0.6V to 5.5V
- Output voltage accuracy (fixed output voltage type) ±1 .5% (VSET > 1.2V), ±18mV (VSET <1.2V)
- Feedback voltage accuracy (adjustable output voltage type) ±9mV (VFB = 0.6V)
- Output voltage/feedback voltage temperature coefficient ±100ppm/°C
- 6.0MHz typical selectable oscillator frequency
- 100% oscillator maximum duty
- P-ch 0.175Ω, N-ch 0.155Ω built-in driver ON resistance (Vin = 3.6V) (RP509Z)
- 0pA typical standby current
- 2.0V typical UVLO detector threshold
Applications
- Portable communication equipment
- Mobiles/smartphones
- Digital cameras
- Note-PCs
- Li-ion battery-used equipment
Associated Converters
Nisshinbo RP509x & RP602x DC-DC Converters
Low output current and high board density for use in power sources for portable equipment.
PCB LAYOUT
Published: 2026-03-11
| Updated: 2026-05-07