- 您现在的位置：买卖IC网 > PDF目录79950 > LHR1601-2 1-OUTPUT 10 W AC-DC REG PWR SUPPLY MODULE PDF资料下载
参数资料
| 型号： | LHR1601-2 |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 10 W AC-DC REG PWR SUPPLY MODULE |
| 文件页数： | 7/10页 |
| 文件大小： | 230K |
| 代理商： | LHR1601-2 |
Board Mountable
AC-DC Converters
LHR, LGR Series
Edition 6/5.2000
6/10
Trim
Vo+
Vo–
Rext 1
05018
Trim
Vo+
Vo–
Rext 2
Auxiliary Functions
Output Voltage Adjustment
The output voltage may be adjusted within
±10% of U
o nom
by means of an external potentiometer or fixed resistor (for
samples see table). If the output voltage setting should be
excessively high, the overvoltage protection circuit may
shut-down the output.
Fig. 4
Output voltage adjustment for single output types
Thermal Considerations
If an AC-DC converter, mounted on a PCB, is located in
free, quasi-stationary air (convection cooling) at the indi-
cated maximum ambient temperature
TA max (see: table
Temperature specifications) and is operated at its nominal
input voltage and output power, the temperature meas-
ured at the
Measuring point of case temperature TC (see:
Mechanical Data) will approach the indicated value TC max
after the warm-up phase. However, the relationship be-
tween
TA and TC depends heavily on the conditions of op-
eration and integration into a system. The thermal condi-
tions are influenced by input voltage, output current, air-
flow, temperature of surrounding components and sur-
faces and the properties of the printed circuit board.
TA
max is therefore, contrary to
TC max, an indicative value
only.
The relation between the maximum allowed output power
Po allowed and the temperature
TA of the surrounding air
is given in fig.:
Maximum allowed output power vs. ambi-
ent temperature. The rates apply if the AC-DC converter is
located in free, quasi-stationary air (convection cooling).
Note: Sufficient forced cooling or an additional heat sink
allows
TA to be higher than the value given in the table if
TC max according to the table is not exceeded.
–10
0
30
20
10
40
50
60
70
0.5
1.0
Po allowed/Po nom
0
TA
[
°C]
0.6
05017
Fig. 3
Maximum allowed output power vs. ambient temperature.
Caution: The installer must ensure that under all oper-
ating conditions
TC remains within the limits stated in
the table:
Temperature specifications.
Table 4: Typical resistor values for various output voltage
adjustment settings.
Type
Rext 1
Rext 2
Uo nom + 5% Uo nom + 10% Uo nom – 5% Uo nom –10%
LHR 1001-2
5.2 k
1 k
4.6 k
100
LHR 1301-2
8.2 k
390
49 k
18.9 k
LHR 1501-2
26 k
9.9 k
148 k
66.3 k
LHR 1601-2
10 k
820
140 k
61 k
LGR 1001-2
5.2 k
1 k
4.6 k
100
LGR 1301-2
8.2 k
490
48.3 k
18.9 k
LGR 1501-2
18 k
1.7 k
141 k
58 k
Outputs Connected in Series
Two or more units supplying the same or different output
voltages may be connected in series. The value of the
maximum output current to be taken is defined by that unit
providing the lowest current limiting value. It should be as-
sured that the outputs do not feed backwards into each
other caused by their different rise/fall times at switch-on/
off cycles by adding reverse polarity diodes across each
output.
Output Overload Protection
An overload protection is provided by a current limiting de-
vice using a foldback characteristic. After removal of over-
load or short circuit the unit will resume normal operation
automatically.
Protection Scheme
The LHR and LGR series is continuously short circuit pro-
tected by means of input power limitation. The unit will not
be damaged if started up into a short circuit. After removal
of the short circuit, it will resume normal operation.
The LHR and LGR series is also no-load proof, meaning
that the regulation is still effective with no load and the out-
put voltage does not rise. However, due to component tol-
erances, oscillation could occur and ripple and noise can
be outside of specified values. If the converter is used in
senitive electronic circuits with no-load conditions, it is rec-
ommended to pre-load the outputs of dual output models
with at least 20% of the specified nominal load.
相关PDF资料 |
PDF描述 |
|---|---|
| LA8123TT | SPECIALTY ANALOG CIRCUIT, PDSO8 |
| LB1860M | BRUSHLESS DC MOTOR CONTROLLER, 1.5 A, PDSO14 |
| LS1001-7EPD3T | 1-OUTPUT 100 W AC-DC REG PWR SUPPLY MODULE |
| LS1001-7EPD5TB1 | 1-OUTPUT 100 W AC-DC REG PWR SUPPLY MODULE |
| LS1001-9EPD9TB1 | 1-OUTPUT 100 W AC-DC REG PWR SUPPLY MODULE |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LHR2040 | 制造商:LIGITEK 制造商全称:LIGITEK electronics co., ltd. 功能描述:SUPER BRIGHT ROUND TYPE LED LAMPS |
| LHR2040-T | 制造商:LIGITEK 制造商全称:LIGITEK electronics co., ltd. 功能描述:LOW CURRENT ROUND TYPE LED LAMPS |
| LHR2041-PF | 制造商:LIGITEK 制造商全称:LIGITEK electronics co., ltd. 功能描述:SUPER BRIGHT ROUND TYPE LED LAMPS |
| LHR2041-TRS-X | 制造商:LIGITEK 制造商全称:LIGITEK electronics co., ltd. 功能描述:TAPE AND REEL TYPE LED LAMPS |
| LHR2043 | 制造商:LIGITEK 制造商全称:LIGITEK electronics co., ltd. 功能描述:SUPER BRIGHT ROUND TYPE LED LAMPS |
发布紧急采购，3分钟左右您将得到回复。