SRDB-20E33HR Bel Fuse Inc, SRDB-20E33HR Datasheet - Page 4

• Manufacturer Part Number: SRDB-20E33HR
• Description: CONV DC/DC 20A 3.3V OUT SMD
• Manufacturer: Bel Fuse Inc
• Series: SRDB-20ExxHr
• Type: Point of Load (POL) Non-Isolated with Remote On/Off and UVLOr

Specifications of SRDB-20E33HR

• Output: 3.3V
• Number Of Outputs: 1
• Power (watts): 66W
• Mounting Type: Surface Mount
• Voltage - Input: 5.8 ~ 13.2V
• Package / Case: 12-DIP SMD Module
• 1st Output: 3.3 VDC @ 20A
• Size / Dimension: 1.22" L x 0.83" W x 0.35" H (30.99mm x 21mm x 8.76mm)
• Power (watts) - Rated: 66W
• Operating Temperature: -40°C ~ 85°C
• Efficiency: 92%
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• 3rd Output: -
• 2nd Output: -

General Specifications
Control Specifications
Output Trim Equations
Equations for calculating the trim resistor (in kΩ) given the desired adjusted voltage (Vadj) and the nominal
output voltage of the converter (Vnom) are shown below. The Trim Down resistor should be connected between
the Trim pin and Vout. The Trim Up resistor should be connected between the Trim pin and Ground. Only one of
the resistors should be used for any given application.
Note: All specifications are typical at 25
Efficiency
Switching Frequency
Over Voltage Protection (Latch)
Output Trim Range
Remote Sense Compensation
MTBF
Dimensions
Weight
Remote On/Off
Signal Low (Unit Off)
Signal High (Unit On)
NON-ISOLATED DC/DC CONVERTERS
5.4 Vdc - 13.2 Vdc Input
Vnom
Rtrim
Rtrim
5.0V
3.3V
2.5V
1.8V
1.5V
1.2V
1.0V
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com
Parameter
_
_
Millimeters (L × W × H)
Parameter
up
down
30.955
Inches (L × W × H)
3.961
1.834
1.927
1.353
0.099
0.102
=
A
(
Vadj
=
(
V
V
V
V
V
V
V
Vnom
O
O
O
O
O
O
O
=5.0 V
=3.3 V
=2.5 V
=1.8 V
=1.5 V
=1.2 V
=1.0 V
−
C
15.805
3.407
3.397
6.916
5.851
0.446
0.684
Vnom
B
2.5 V
1.0 Vdc - 5.0 Vdc Output / 20 A
Min
0 V
A
−
Vadj
480 kHz
108.5%
90%V
−
91%
89%
88%
85%
84%
82%
81%
Min
-
°C
D
5.884
1.266
0.861
1.533
1.533
0.196
0.401
O
−
)
unless otherwise stated.
C
1.22 x 0.827 x 0.345
Typ
30.99 x 21.0 x 8.76
B
3,154,461 hours
-
-
)
K
600 kHz
115%
94%
92%
91%
88%
87%
85%
84%
11 g
Typ
-
-
8.450
1.825
2.320
5.000
3.935
0.201
0.183
D
13.2 V
Max
1 V
110%V
720 kHz
120%
Max
10%
-
-
-
-
-
-
-
-
Remote on/off pin open, unit on.
O
Module
Module
Measured at Vin=8 V at full load.
Can be reset by cycling the input supply
voltage or remote on/off.
Calculated Per Bell Core SR-332 (I
16 A, Vin=8 V, Vo=3.3 V; T
GND
GND
Vout
Trim
Vout
Trim
Notes
Rtrimdown
Rtrimup
Notes
a
= 25 °C)
O
=