N O N - I S O L A T E D , 2 8 A E I G H T H B R I C K , D C / D C C O N V E R T E R S
LEN D12 Models
LEN-0.8/28-D12
0.8
28
30
50
±0.25%
12
10.2-13.8
80/2.3
79%
80%
84.5%
C43,C44, P62
LEN-1/28-D12
1
28
30
50
±0.25%
12
10.2-13.8
80/2.8
80%
82.5%
86%
C43,C44, P62
LEN-1.2/28-D12
1.2
28
30
50
±0.25%
12
10.2-13.8
83/3.3
83%
86.5%
88%
C43,C44, P62
LEN-1.5/28-D12
1.5
28
20
50
±0.25%
12
10.2-13.8
89/4
85%
88%
90%
C43,C44, P62
LEN-1.8/28-D12
1.8
28
20
50
±0.2%
±0.25%
12
10.2-13.8
92/4.7
89%
90%
91%
C43,C44, P62
LEN-2/28-D12
2
28
20
50
±0.25%
12
10.2-13.8
100/5.2
88%
90%
91.5%
C43,C44, P62
LEN-2.5/28-D12
2.5
28
20
50
±0.25%
12
10.2-13.8
130/6.4
89%
91%
93%
C43,C44, P62
LEN-3.3/28-D12
3.3
28
30
50
±0.25%
12
10.2-13.8
130/7.4
91%
93%
94%
C43,C44, P62
LEN-5/25-D12
5
25
30
50
±0.25%
12
10.2-13.8
130/11
92%
95%
95.5%
C43,C44, P62
Typical at TA = +25°C under nominal line voltage and full-load conditions, unless otherwise
noted. All models are tested and specied with external 33F capacitor installed across their
input and output pins.
Ripple/Noise (R/N) is tested/specied over a 20MHz bandwidth.
These devices have no minimum-load requirements and will regulate under no-load conditions.
Regulation specications describe the output-voltage deviation as the line voltage or load is
varied from its nominal/midpoint value to either extreme.
M E C H A N I C A L
S P E C I F I C A T I O N S
Nominal line voltage, no-load/full-load conditions.
The operating input voltage is 10.2V to 13.8V. However, 10.8VIN is required for the DC/DC
to properly start up under all line, load and temperature conditions. The 10.8V potential must be
maintained across the inputs until the output is up and regulating. After the output is regulating,
the operating input range is 10.2V to 13.8V.
P A R T
N U M B E R
S T R U C T U R E
Performance Specications and Ordering Guide
Package
VOUT
IOUT
VIN Nom. Range
IIN
(Case,
Model
(Volts)
(Amps)
Typ.
Max.
Line
Load
(Volts)
(mA/A)
Min.
Typ.
Pinout)
Output
Input
R/N (mVp-p)
Regulation (Max.)
Efciency
Full Load
Load
Pin
Function P62
Pin
Function P62
1
Common
6
Common
2
VOUT Trim
7
+Output
3
NC
8
Common
4
On/Off control
9
+Output
5
+Input
10
+Sense
I/O Connections
Maximum Rated Output
Current in Amps
Non-Isolated Eighth Brick
Output
Conguration:
L = Unipolar
Low Voltage
Nominal Output Voltage:
0.8, 1, 1.2, 1.5, 1.8, 2, 2.5, 3.3
or 5 Volts
Input Voltage Range:
D12 = 10.2 to 13.8 Volts
(12V nominal)
L EN
28
-
/
D12
-
1.8
0.90
(22.86)
2.00 (50.80)
BOTTOM VIEW
1
2
3
10
7
6
9
8
5
4
A
0.600 (15.24)
4 EQ. SP. @ 0.150 (3.81)
B
2.23 (56.64)
0.50 (12.7)
W/ HEATSINK
0.46 (11.68)
WO/ HEATSINK
0.122
(3.10)
0.200 MIN.
(5.08)
PINS 2-4, 10:
0.040 ±0.001
(1.016 ±0.025)
PINS 1, 5-9:
0.062 ±0.001
(1.575 ±0.025)
PLASTIC STANDOFFS
ARE RELIEVED 0.030 (0.76)
IN SOLDER JOINT AREA
Surface-Mount Package
Blank = Through-hole
package
M
Case C44
2.23 (56.64)
2.30 (58.42)
SMT LEADS COPLANAR
TO 0.004 (0.10)
BOTTOM VIEW
0.600
(15.24)
0.150 TYP.
(3.81)
0.150
(3.81)
0.125
(3.18)
0.110
(2.79)
0.035
(0.89)
10
9
8
7
6
5
4
3
2
1
DIMENSIONS ARE IN INCHES (MM)
0.50 (12.7)
W/ HEATSINK
0.46 (11.68)
WO/ HEATSINK
0.90
(22.86)
Case C43
2
Heat Sink option
H
Note:
Not all model number combinations
are available. Contact DATEL.