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參數(shù)資料
| 型號： | TC1054-3.3VCT |
| 廠商： | Microchip Technology Inc. |
| 元件分類： | 圓形連接器 |
| 英文描述： | Circular Connector; Body Material:Aluminum; Series:PT06; Number of Contacts:8; Connector Shell Size:12; Connecting Termination:Solder; Circular Shell Style:Straight Plug; Circular Contact Gender:Pin; Insert Arrangement:12-8 |
| 中文描述： | 為50mA，100mA的電流為150mA的CMOS關(guān)機和錯誤LDO的輸出 |
| 文件頁數(shù)： | 10/12頁 |
| 文件大?。?/td> | 123K |
| 代理商： | TC1054-3.3VCT |
TC1055
100mA CMOS LDO WITH SHUTDOWN
AND ERROR OUTPUT
4
PRELIMINARY INFORMATION
TC1055-01 6/5/97
DETAILED DESCRIPTION
The TC1055 is a precision fixed output voltage regula-
tor. (If an adjustable version is desired, please see the
TC1070 or TC1071 data sheets.) Unlike the bipolar regula-
tors, the TC1055 supply current does not increase with load
current. In addition, V
OUT
remains stable and within regula-
tion at very low load currents (an important consideration in
RTC and CMOS RAM battery back-up applications).
Figure 1 shows a typical application circuit. The regula-
tor 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) and V
OUT
falls to zero volts and ERROR is open
circuited.
ERROR Open Drain Output
ERROR is driven low whenever V
OUT
falls out of regu-
lation by more than – 5% (typical). This condition may be
caused by low input voltage, output current limiting, or
thermal limiting. The ERROR threshold is 5% below rated
V
OUT
regardless of the programmed output voltage value
(e.g. ERROR = V
OL
at 4.75 (typ.) for a 5.0V regulator and
2.85V (typ.) for a 3.0V regulator). ERROR output operation
is shown in Figure 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 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 200msec 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).
Output Capacitor
A 1
μ
F(min) capacitor from V
OUT
to ground is recom-
mended. The output capacitor should have an effective
series resistance of 5
or less, 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 tanta-
lum capacitor types can be used. (Since many aluminum
electrolytic capacitors freeze at approximately – 30
°
C, solid
tantalums are recommended for applications operating
below – 25
°
C.) When operating from sources other than
batteries, supply-noise rejection and transient response
can be improved by increasing the value of the input and
output capacitors and employing passive filtering tech-
niques.
Thermal Considerations
Thermal Shutdown
Integrated thermal protection circuitry shuts the regula-
tor off when die temperature exceeds 160
°
C. The regulator
remains off until the die temperature drops to approximately
150
°
C.
Power Dissipation
The amount of power the regulator dissipates is prima-
rily a function of input and output voltage, and output current.
The following equation is used to calculate worst case
actualpower dissipation:
Figure 1. Typical Application Circuit
1
μ
F
C1
0.2
μ
F
C2
R1
1M
V
+
C2 Requires Only
if ERROR is used as a
Processor RESET Signal
(See Text)
Shutdown Control
(to CMOS Logic or Tie
to V
IN
if unused)
BATTLOW
or RESET
TC1055VCT
V
IN
BATTERY
V
OUT
ERROR
SHDN
GND
V
OUT
1
μ
F
Figure 2. ERROR Output Operation
V
IH
V
OL
ERROR
V
TH
V
OUT
HYSTERESIS (V
HYS
)
相關(guān)PDF資料 |
PDF描述 |
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| TC1054-3.6VCT | Circular Connector; MIL SPEC:MIL-C-26482, Series I, Solder; Body Material:Aluminum; Series:PT06; No. of Contacts:8; Connector Shell Size:12; Connecting Termination:Solder; Circular Shell Style:Straight Plug |
| TC1054-4.0VCT | 50mA, 100mA and 150mA CMOS LDOs with Shutdown and ERROR Output |
| TC1054-5.0VCT | 50mA, 100mA and 150mA CMOS LDOs with Shutdown and ERROR Output |
| TC1054-2.7VCT | Circular Connector; Body Material:Aluminum; Series:PT06; Number of Contacts:4; Connector Shell Size:12; Connecting Termination:Solder; Circular Shell Style:Straight Plug; Circular Contact Gender:Socket; Insert Arrangement:12-4 |
| TC1054 | 50mA CMOS LDO WITH SHUTDOWN AND ERROR OUTPUT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TC1054-4.0VCT | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:50mA, 100mA and 150mA CMOS LDOs with Shutdown and ERROR Output |
| TC1054-4.0VCT713 | 功能描述:低壓差穩(wěn)壓器 - LDO 50mA LDO 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 |
| TC1054-5.0VCT | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:50mA, 100mA and 150mA CMOS LDOs with Shutdown and ERROR Output |
| TC1054-5.0VCT713 | 功能描述:低壓差穩(wěn)壓器 - LDO 50mA LDO 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 |
| TC1055 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:50 mA, 100 mA and 150 mA CMOS LDOs with Shutdown and ERROR Output |
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