Datasheet

www.recom-power.com
REV.: 1/2019 RPX-2
DC/DC Converter
RPX-2.5
Series
OPERATING RATINGS
Parameter Condition Min. Typ. Max.
Input Voltage Range
4.5VDC
(6)
28VDC
Under Voltage Lockout (UVLO)
(default setting)
(7)
DC-DC ON
DC-DC OFF
3.8VDC
3.3VDC
4.1VDC
3.6VDC
4.4VDC
3.9VDC
Output Voltage Adjust Range refer to “OUTPUT VOLTAGE SETTING”
1.2VDC 6VDC
CTRL Voltage Range
0VDC 6VDC
CTRL ON/OFF Thresholds
DC-DC ON (or open)
DC-DC OFF (or short to GND)
1.1VDC
1.21VDC
1.19VDC
1.28VDC
Input Current of CTRL Pin
V
CTRL
= 1.5VDC (DC-DC ON)
1.6µA
V
CTRL
= 1VDC (DC-DC OFF)
0.7µA
Standby Current DC-DC OFF
2µA
Output Current 0A 2.5A
(8)
Start-up Time
power on
by using CTRL (without C
OUT
)
10ms
6ms
Rise-time (internal soft start) 5ms
Switching Frequency
550kHz 750kHz 1MHz
Output Ripple and Noise
(9)
20Mhz BW 22mVp-p
Test Set-up
V
OUT
+V
out
FB
R
FBT
R
FBB
V
IN
V
IN
DNC SW
CTRL
GND
RPX-2.5
R
ULVO1
R
UVLO2
V
CTRL
C
IN1
C
IN2
Q
1
C
OUT1
C
FF
C
OUTn
. . .
Notes:
Note6: The minimum recommended input voltage is 4.5 V or (V
OUT
× 1.3), whichever is greater
Note7: Refer to “UNDER VOLTAGE LOCKOUT SETTING”
Note8: The maximum output current that the RPX can deliver is a function of input voltage, output voltage, and ambient temperature
Note9: Measurement with C
IN1
= 10µF, 50V 1210 ceramic, C
IN2
= 100µF, 35V electrolytic and C
OUT1,2
= 47µF 16V, ceramic capacitors
Specifications (measured @ ta= 25°C, 12Vin, 3.3Vout, full load unless otherwise stated, refer to test set up)
Safe Operating Area
1 1.5 2 2.5 3 3.5 4 4.5 5 65.5
32
24
16
8
28
20
12
4
0
Input Voltage [VDC]
Output Voltage [VDC]
min. Vin
max. Vin
Typical operating conditions
Nominal Vin Vout Iout , max
24VDC 5VDC 2.0A
24VDC 3.3VDC 2.1A
12VDC 5VDC 2.5A
12VDC 3.3VDC 2.5A
5VDC 3.3VDC 2.5A
5VDC 1.2VDC 2.5A