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RM516L_RM517L-EV-221020
Wearable equipment such as Smart Watch, Smart Band and Health
monitoring.
Li-ion battery-used equipment, Coin cell-used equipment.
Low power RF such as Bluetooth® Low Energy, Zigbee,
Wi-SUN and ANT.
Low power CPU, Memory, Sensor device and Energy harvester.
A built-in thin inductor simplifies the board design and dedicates to miniaturize the system.
An ultra-low quiescent current (I
Q
0.3µA) and high efficiency at all output current range.
Low output voltage range (0.3V to 1.2V) contributes to low power drive of the system.
Due to a built-in inductor, the number of external components can be reduced, and the purchasing risk
such as EOL can be reduced.
Product Name Package Quantity per Reel
RM516Lxx1$-E2 QFN2430-8 3,000
RM517Lxx1$-E2 QFN2430-8 3,000
Version Auto-discharge Function V
SET
A/C NO
0.3 V to 1.2 V
B/D YES
xx：Set Output Voltage (V
SET
)
Fixed Output Voltage Type：0.1V increments from0.3V (03) to
1.2V (12)
$： Versions
KEY SPECIFICATIONS OPTIONAL FUNCTIONS
PACKAGE (unit: mm)
TYPICAL APPLICATIONS
APPLICATIONS
QFN2430-8
3.0 x 2.4 × 0.8 (mm)
Quiescent current： Typ. 0.3 µA
Output current: RM516L: 100 mA / RM517L: 300 mA
Output Voltage Range: 0.1V increments from 0.3 V to 1.2 V
Output Voltage Accuracy: ±18 mV
Built-in MOSFET On-resistance (V
IN
=3.6 V):
PMOS Typ.0.19Ω, NMOS Typ.0.19Ω
Standby Current: Typ. 0.01 µA
Built-in Inductor, Ultra-low Output Voltage (0.3V),
Ultra-low Quiescent Current (I
Q
0.3µA)
100mA/300mA Step-down DC/DC Module
RM516L / RM517L Typical Application Circuit
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RM516L_RM517L-EV-221020
A built-in thin inductor simplifies the board design and dedicates to miniaturize the system.
General Issue
Our Solution
With built-in inductor, just locating an input and output capacitor close to the chip, simple board designing is possible.
Built-in inductor achieves reducing the size. In addition, mounting the built-in inductor horizontally makes thinner.
Having an inductor built-in, no need to select an inductor and no need to concern about EOL.
For DC/DC board designing, usually a recommended pattern is indicated to prevent oscillation. But due to the space
res
triction of board, customers cannot realize the recommended pattern. Want to reduce and thin the size as possible.
As not being accustomed to using DC/DC, not sure what is the key point of board designing.
Want to reduce man hours for evaluation and selection of peripheral components. Also concern about EOL of selected
c
omponents.
The height is reduced to 0.8 (mm) by mounting
next to the thin inductor.
Suitable for board mounting with height restrictions.
RM516L/RM517L
0.8mm
QFN2430-8
3.0 x 2.4 (mm)
L
die
Image of PKG Mounting
Built-in Inductor, Ultra-low Output Voltage (0.3V),
Ultra-low Quiescent Current (I
Q
0.3µA)
100mA/300mA Step-down DC/DC Module