- 您现在的位置：买卖IC网 > PDF目录383880 > TC1055-4.0VCT (Microchip Technology Inc.) 50mA, 100mA and 150mA CMOS LDOs with Shutdown and ERROR Output PDF资料下载
参数资料
| 型号： | TC1055-4.0VCT |
| 厂商： | Microchip Technology Inc. |
| 元件分类： | 基准电压源/电流源 |
| 英文描述： | 50mA, 100mA and 150mA CMOS LDOs with Shutdown and ERROR Output |
| 中文描述： | 为50mA，100mA的电流为150mA的CMOS关机和错误LDO的输出 |
| 文件页数： | 6/18页 |
| 文件大小： | 501K |
| 代理商： | TC1055-4.0VCT |
TC1054/TC1055/TC1186
DS21350B-page 6
2002 Microchip Technology Inc.
3.0
DETAILED DESCRIPTION
The TC1054, TC1055 and TC1186 are precision fixed
output voltage regulators. (If an adjustable version is
desired, please see the TC1070/TC1071/TC1187 data
sheet.) Unlike bipolar regulators, the TC1054, TC1055
and TC1186 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
operating
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 threshold is
5% below rated V
OUT
regardless of the programmed
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
TC1054
TC1055
TC1186
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
V
TH
V
OUT
ERROR
V
IH
V
OL
HYSTERESIS (V
H
)
相关PDF资料 |
PDF描述 |
|---|---|
| TC1186-3.0VCT | 50mA, 100mA and 150mA CMOS LDOs with Shutdown and ERROR Output |
| TC105 | PFM/PWM Step-Down DC/DC Controller |
| TC105303ECT | PFM/PWM Step-Down DC/DC Controller |
| TC105503ECT | PFM/PWM Step-Down DC/DC Controller |
| TC105333ECT | PFM/PWM Step-Down DC/DC Controller |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TC1055-5.0VCT | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:50mA, 100mA and 150mA CMOS LDOs with Shutdown and ERROR Output |
| TC1055-5.0VCT713 | 功能描述:低压差稳压器 - LDO .1mA w/Shtdn & Error 5.0V RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| TC105EI10 | 功能描述:COVER RCWAY TC105 SM IVR10' RoHS:否 类别:线缆，导线 - 管理 >> 线槽，走线系统 - 附件 系列:Pan-Way™ 标准包装:1 系列:PANDUCT® 附件类型:盖 - 线管 适用于相关产品:Panduit 导管 H 型 高度:- 宽:4"（101.6mm） 长度:36.0"（914.4mm） 颜色:黑 其它名称:298-HC4BL36 |
| TC105EI6 | 功能描述:COVER RCWAY T105 SM IVORY 6' RoHS:否 类别:线缆，导线 - 管理 >> 线槽，走线系统 - 附件 系列:Pan-Way™ 标准包装:1 系列:PANDUCT® 附件类型:盖 - 线管 适用于相关产品:Panduit 导管 H 型 高度:- 宽:4"（101.6mm） 长度:36.0"（914.4mm） 颜色:黑 其它名称:298-HC4BL36 |
| TC105EI8 | 功能描述:COVER RCWAY TC105 SM IVR8' RoHS:否 类别:线缆，导线 - 管理 >> 线槽，走线系统 - 附件 系列:Pan-Way™ 标准包装:1 系列:PANDUCT® 附件类型:盖 - 线管 适用于相关产品:Panduit 导管 H 型 高度:- 宽:4"（101.6mm） 长度:36.0"（914.4mm） 颜色:黑 其它名称:298-HC4BL36 |
发布紧急采购，3分钟左右您将得到回复。