Renesas RAA211403 Manual

RTKA211403DE0000BU
The RAA211403 is an integrated 3.3V, 300mA buck
regulator with an ultra low quiescent current (I
4µA. It supports a wide input voltage range from 7V to
40V. The RAA211403 is offered in a TSOT23-5
(2.9mm×1.63mm) package. The
RTKA211403DE0000BU evaluation board provides a
quick and comprehensive platform for evaluating the
performance features of the RAA211403 buck
regulator.
The RTKA211403DE0000BU evaluation board
operates from a supply voltage of 7V to 40V
the capability of delivering a continuous load up to
300mA at 3.3V output voltage.
Specifications
This board is configured and optimized for the
following operating conditions:
▪ Input voltage range: 7V to 40V
▪ Output voltage: 3.3V
▪ Up to 300mA output current capability
▪ Inductor current limit of 750mA (typical) peak
▪ Operating temperature range: -40°C to +125°C
J1
VIN
GND
J2
R16UZ0050EU0102 Rev.1.02
Dec 1, 2023
) of
Q
with
DC
R
2
1M
U1
4
VIN EN
GND
SW
5
VOUT
RAA211403
VSW
GND
Figure 1. RTKA211403DE0000BU Block Diagram
Evaluation Board Manual
Features
▪ 7V to 40V input supply range
▪ Up to 300mA output current
▪ I = 4µA at 40V, at no load conditions, switching
Q
▪ I = 2.5µA at 40V at no load and no switching
Q
conditions
▪ Minimum on-time of 75ns
▪ Fixed 3.3V V
OUT
▪ Variable frequency operation, frequency
programmed by external inductor (4.7µH to 15µH)
▪ Pre-bias start-up / Monotonic / smooth start-up
▪ Total of four external components
▪ Protections: Overcurrent (OC) Limit, input
Undervoltage Lockout (UVLO), Over-Temperature
Protection (OTP), output Overvoltage Protection
(OVP)
▪ Accurate EN threshold
EN
TP3
3
2
1
L
1
2
15µH
© 2022-2023 Renesas Electronics
V = 3.3V
OUT
J3
GND
J4
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