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參數(shù)資料
| 型號： | DCR021205P-U |
| 英文描述： | Miniature, 2W Isolated REGULATED DC/DC CONVERTERS |
| 中文描述： | 微型，2W的隔離穩(wěn)壓DC / DC變換器 |
| 文件頁數(shù)： | 7/12頁 |
| 文件大?。?/td> | 174K |
| 代理商： | DCR021205P-U |
SBVS028A DECEMBER 2000 REVISED APRIL 2004
www.ti.com
7
APPLICATION NOTES
DCR02 SINGLE VOLTAGE OUTPUT
The DCR02 can be used to provide a single voltage output
by connecting the circuit as shown in Figure 1. The
ERROR output signal will be pulled up to the value of V
OUT
for the particular DCR02 being used. The value of R
ERR
will depend on the loading on the ERROR line; however,
the total load on the ERROR line must not exceed the
value given in the specification.
The output can be permanently enabled by connecting the
ENABLE pin to the V
REC
pin. The DCR02 can be enabled
remotely by connecting the ENABLE pin to V
REC
via a
pull-up resistor (R
EN
); the value of this resistor is not critical
for the DCR02 since only a small current flows. Switch
SW1 can be used to pull the ENABLE pin low, thus
disabling the output. The switching devices can be a
bipolar transistor, FET, or a mechanical device; the main
load that it will see is R
EN
.
GENERATING TWO POSITIVE OUTPUT
VOLTAGES
Two DCR02s can be used to create two +5V output
voltages, as shown in Figure 2. The two DCR02s are
connected in self-synchronization, thus locking the
oscillators of both devices to a single frequency.
The ERROR and ENABLE facilities can be used in a
similar configuration for a single DCR02. The filter
capacitors connected to the V
REC
pins (C
FILTER
) should be
kept separate from each other and connected in close
proximity to the respective DCR02. If similar output
voltages are being used, it is not recommended that a
single filter capacitor (with an increased capacitance) be
used with both V
REC
pins connected together, since this
could result in the overloading of one of the devices.
DCR
02
V
OUT
V
IN
C
OUT
0.1
μ
F
R
ERR
10k
C
FILTER
1
μ
C
FILTER
1
μ
V
O1
0V
ENABLE
V
REC
ERROR
V
S
U1
0V
SYNC
ERROR
DCR
02
V
OUT
V
IN
C
OUT
0.1
μ
F
R
ERR
10k
V
O2
0V
ENABLE
V
REC
ERROR
V
S
U2
0V
SYNC
0V
OUT
ERROR
C
IN(1)
C
IN(1)
NOTE: (1) Required 2.2
μ
F low ESR ceramic capacitor.
Figure 2. Generating Two Positive Voltages from Self-Synchronized DCR02s
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| DCR022405P | 功能描述:DC/DC轉(zhuǎn)換器 Mini 2W Iso Regs DC/DC Converter RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風格:SMD/SMT 封裝 / 箱體尺寸: |
| DCR022405P-U | 功能描述:DC/DC轉(zhuǎn)換器 Mini 2W Iso Regs DC/DC Converter RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風格:SMD/SMT 封裝 / 箱體尺寸: |
| DCR022405P-U/700 | 功能描述:DC/DC轉(zhuǎn)換器 Mini 2W Iso Regs DC/DC Converter RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風格:SMD/SMT 封裝 / 箱體尺寸: |
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