68
STANDARD DC/DC CONVERTERS
2700HN series
27 watts
Input Characteristics
Input Voltage Range:
Input Under Voltage Shutdown
Input Filtering:
Efficiency:
No Load Input Current:
9-18, 36-75 VDC
8V (9-18), 33V (36-75) VDC
Pi filter
See Available Models Chart
25mA typical
Output Characteristics
Output Voltage Accuracy:
Output Voltage Adjustment:
Total Error Band:
Minimum Load Requirements:
Line Regulation:
Load Regulation:
Ripple and Noise:
Transient Response/Recovery Time:
Temperature Coefficient:
Short Circuit Protection:
Over Voltage Protection:
+/-1%
V1 Fixed, V2 adjustable +10% and -30% of nominal
+/-2% Max.
None
+/-0.5% Low Line - High Line
+/-0.5% Min Load - Full Load
50mV or 1% pk-pk, 20MHz Bandwidth
200uS Typ., 25% Load Step
+/-0.02% / ºC
Continuous (Hiccup Mode)
Standard
Key Features:
• Dual, independantly
controlled output
channels
• Unencapsulated
construction
• Industry Standard 2.0”
x 2.0” x .40” Footprint
• Switching frequencies
synchronized at 400kHz
Environmental Characteristics
Operating Temperature Range (Ambient):
Storage Temperature Range:
Maximum Case Temperature:
Thermal Shutdown:
Humidity:
Vibration
Reliability (MTBF per Mil-HDBK-217):
-40ºC to +85ºC,
See 2700HN Series Data
Sheet for Derating curves.
-55ºC to +125ºC
105ºC Baseplate
115ºC Baseplate
Up to 95%, Non-condensing
5Grms, 5Hz to 2KHz
>800,000 hours, +25ºC, Ground Benign
Ideally Suited For:
• Mixed analog/digital
subsystems
• Telecom equipment
• Distributed power
networks
General Characteristics
Switching Frequency:
Isolation (Input to Output):
Isolation Capacitance:
Weight:
Case Material:
Agency Approvals
400KHz, Fixed
1500VDC minimum (1 minute)
1200pF
1.2oz (34g)
Aluminum baseplate with black anodized
aluminum case
UL, CSA, TUV and CE (LVD, 48 Vin Models)
69
Available Models
Input
Voltage
Range
(VDC)
9-18
9-18
36-75
36-75
9-18
9-18
36-75
36-75
Model
Nominal
Input Voltage
(VDC)
12
12
48
48
12
12
48
48
Output
Voltage
(VDC)
+5.0 / +3.3
+3.3 / +2.5
+5.0 / +3.5
+3.3 / +2.5
+5.0 / -3.3
+3.3 / -2.5
+5.0 / -3.3
+3.3 / -2.5
Max. Output
Current
(A)
2.5 / 4.0
2.5 / 4.0
3.0 / 5.0
3.0 / 5.0
2.5 / 4.0
2.5 / 4.0
3.0 / 5.0
3.0 / 5.0
Efficiency @
Full-Load (%)
79
78
82
80
79
78
82
80
2705/3P12HN
2703/2P12HN
2705/3P48HN
2703/2P48HN
2705/3N12HN
2703/2N12HN
2705/3N48HN
2703/2N48HN
*Total output power not to exceed 27W (22W for 12Vin models.)
Outline Drawing
Pinout Chart
Pin
1
2
3
4
5
6
7
8
Function
Remote On/Off
No Pin
- Input
+ Input
Trim
V2 Output
Common
V1 Output
VENT SLOTS ARE TYPE FOR
TWO LONG SIDES ONLY.
PIN DIA 0.04 (1.02) (TYP 7 PLCS
2.00 SQUARE
50.80
1.80
45.72
0.13
3.18
HEATSINK IS OPTIONAL
0.40
10.20
0.10
2.50
8
4
0.60
15.24
0.40
10.16
7
1.10
27.94
.70
17.78
0.30
7.62
3
6
1
0.50
12.70
5
0.10
2.54
0.02 TYP
0.51
0.64
16.26
All specifications are typical at 25 degrees C with nominal input voltage and full output unless
otherwise noted. Specifications are subject to change without notice. All dimensions are typical.
嵌入式系统
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