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參數(shù)資料
| 型號： | TC1073-27VCH |
| 廠商： | Microchip Technology Inc. |
| 元件分類： | 圓形連接器 |
| 英文描述： | Circular Connector; No. of Contacts:55; Series:; Body Material:Aluminum; Connecting Termination:Solder; Connector Shell Size:22; Circular Contact Gender:Pin; Circular Shell Style:Jam Nut Receptacle; Insert Arrangement:22-55 |
| 中文描述： | 為50mA和100mA的CMOS低壓降穩(wěn)壓器具有關(guān)斷功能，錯誤輸出和VREF繞道 |
| 文件頁數(shù)： | 6/20頁 |
| 文件大小： | 564K |
| 代理商： | TC1073-27VCH |
TC1072/TC1073
DS21354B-page 6
2002 Microchip Technology Inc.
3.0
DETAILED DESCRIPTION
The TC1072 and TC1073 are precision fixed output
voltage regulators. (If an adjustable version is desired,
please see the TC1070/TC1071/TC1187 data sheet.)
Unlike bipolar regulators, the TC1072 and TC1073’s
supply current does not increase with load current. In
addition, V
OUT
remains stable and within regulation
over the entire 0mA to I
OUT
MAX
load current range, (an
important consideration in RTC and CMOS RAM
battery back-up applications).
Figure 3-1 shows a typical application circuit. The
regulator is enabled any time the shutdown input
(SHDN) is at or above V
IH
, and shutdown (disabled)
when SHDN is at or below V
IL
. SHDN may be
controlled by a CMOS logic gate, or I/O port of a
microcontroller. If the SHDN input is not required, it
should be connected directly to the input supply. While
in shutdown, supply current decreases to 0.05
μ
A
(typical), V
OUT
falls to zero volts, and ERROR is open-
circuited.
FIGURE 3-1:
TYPICAL APPLICATION
CIRCUIT
3.1
ERROR Open Drain Output
ERROR is driven low whenever V
OUT
falls out of
regulation by more than – 5% (typical). This condition
may be caused by low input voltage, output current
limiting, or thermal limiting. The ERROR output voltage
value (e.g. ERROR = V
OL
at 4.75V (typ.) for a 5.0V
regulator and 2.85V (typ.) for a 3.0V regulator).
ERROR output operation is shown in Figure 3-2.
Note that ERROR is active when V
OUT
falls to V
TH
, and
inactive when V
OUT
rises above V
TH
by V
HYS
.
As shown in Figure 3-1, ERROR can be used as a
battery low flag, or as a processor RESET signal (with
the addition of timing capacitor C2). R1 x C2 should be
chosen to maintain ERROR below V
IH
of the processor
RESET input for at least 200 msec to allow time for the
system to stabilize. Pull-up resistor R1 can be tied to
V
OUT
, V
IN
or any other voltage less than (V
IN
+ 0.3V).
FIGURE 3-2:
ERROR OUTPUT
OPERATION
3.2
Output Capacitor
A 1
μ
F (min) capacitor from V
OUT
to ground is
recommended. The output capacitor should have an
effective series resistance greater than 0.1
and less
than 5.0
, and a resonant frequency above 1MHz. A
1
μ
F capacitor should be connected from V
IN
to GND if
there is more than 10 inches of wire between the
regulator and the AC filter capacitor, or if a battery is
used as the power source. Aluminum electrolytic or
tantalum capacitor types can be used. (Since many
aluminum electrolytic capacitors freeze at approxi-
mately -30°C, solid tantalums are recommended for
applications operating below -25°C.) When operating
from
sources
other
than
rejection and transient response can be improved by
increasing the value of the input and output capacitors
and employing passive filtering techniques.
batteries,
supply-noise
3.3
Bypass Input
A 470pF capacitor connected from the Bypass input to
ground
reduces
noise
present
reference, which in turn significantly reduces output
noise. If output noise is not a concern, this input may be
left unconnected. Larger capacitor values may be
used, but results in a longer time period to rated output
voltage when power is initially applied.
on
the
internal
TC1072
TC1073
V
OUT
SHDN
GND
ERROR
1
μ
F
C1
+
V
IN
V
OUT
Shutdown Control
(to CMOS Logic or Tie
to V
IN
if unused)
1
μ
F
+
Battery
+
0.2
μ
F
C2
C2 Required Only
if ERROR is used as a
Processor RESET Signal
(See Text)
R1
1M
V+
BATTLOW
or RESET
Bypass
C3, 470pF
V
TH
V
OUT
ERROR
V
IH
V
OL
HYSTERESIS (V
H
)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TC1073-285VCH | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:50mA and 100mA CMOS LDOs with Shutdown, ERROR Output and VREF Bypass |
| TC1073-28VCH | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:50mA and 100mA CMOS LDOs with Shutdown, ERROR Output and VREF Bypass |
| TC1073-3.0VCH713 | 功能描述:低壓差穩(wěn)壓器 - LDO .1mA w/Shtdn & Error 3.0V RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| TC10733.0VCT713 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:50mA and 100mA CMOS LDOs with Shutdown, ERROR Output and VREF Bypass |
| TC1073-3.3VCH713 | 功能描述:低壓差穩(wěn)壓器 - LDO .1mA w/Shtdn & Error 3.3V RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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