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| 型号： | TC1301A-ADAVMFTR |
| 厂商： | Microchip Technology Inc. |
| 英文描述： | Dual LDO with Microcontroller RESET Function |
| 中文描述： | 双路LDO稳压器与微控制器的复位功能 |
| 文件页数： | 12/28页 |
| 文件大小： | 890K |
| 代理商： | TC1301A-ADAVMFTR |
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TC1301A/B
DS21798B-page 12
2005 Microchip Technology Inc.
3.0
TC1301A PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 3-1.
TABLE 3-1:
TC1301A PIN FUNCTION TABLE
3.1
RESET Output Pin
The push-pull output pin is used to monitor the voltage
on the V
DET
pin. If the V
DET
voltage is less than the
threshold voltage, the RESET output will be held in the
low state. As the V
DET
pin rises above the threshold,
the RESET output will remain in the low state for
300 ms and then change to the high state, indicating
that the voltage on the V
DET
pin is above the threshold.
3.2
Regulated Output Voltage #1
(V
OUT1
)
Connect V
OUT1
to the positive side of the V
OUT1
capacitor and load. It is capable of 300 mA maximum
output current. V
OUT1
output is available when V
IN
is
available; there is no pin to turn it OFF. See TC1301B
if ON/OFF control of V
OUT1
is desired.
3.3
Circuit Ground Pin (GND)
Connect GND to the negative side of the input and
output capacitor. Only the LDO internal circuitry bias
current flows out of this pin (200 μA maximum).
3.4
Reference Bypass Input
By connecting an external 10 nF capacitor (typical) to
the bypass input, both outputs (V
OUT1
and V
OUT2
) will
have less noise and improved Power Supply Ripple
Rejection (PSRR) performance. The LDO output
voltage start-up time will increase with the addition of
an external bypass capacitor. By leaving this pin
unconnected, the start-up time will be minimized.
3.5
Output Voltage #2 Shutdown
(SHDN2)
ON/OFF control is performed by connecting SHDN2 to
its proper level. When the input of this pin is connected
to a voltage less than 15% of V
IN
, V
OUT2
will be OFF. If
this pin is connected to a voltage that is greater than
45% of V
IN
, V
OUT2
will be turned ON.
3.6
Regulated Output Voltage #2
(V
OUT2
)
Connect V
OUT2
to the positive side of the V
OUT2
capacitor and load. This pin is capable of a maximum
output current of 150 mA. V
OUT2
can be turned ON and
OFF using SHDN2.
3.7
Unregulated Input Voltage Pin
(V
IN
)
Connect the unregulated input voltage source to V
IN
. If
the input voltage source is located more than several
inches away, or is a battery, a typical input capacitance
of 1 μF to 4.7 μF is recommended.
3.8
Input Pin for Voltage Detector
(V
DET
)
The voltage on the input of V
DET
is compared with the
preset V
DET
threshold voltage. If the voltage is below
the threshold, the RESET output will be low. If the
voltage is above the V
DET
threshold, the RESET output
will be high after the RESET time period. The I
DET
supply current is typically 9 μA at room temperature,
with V
DET
= 3.8V.
Pin No.
Name
Function
1
RESET
Push-pull output pin that will remain low while V
DET
is below the reset threshold and for
300 ms after V
DET
rises above the reset threshold.
Regulated output voltage #1 capable of 300 mA.
2
V
OUT1
GND
3
Circuit ground pin.
4
Bypass
Internal reference bypass pin. A 10 nF external capacitor can be used to further reduce
output noise and improve PSRR performance.
5
SHDN2
Output #2 shutdown control Input.
6
V
OUT2
V
IN
V
DET
Regulated output voltage #2 capable of 150 mA.
7
Unregulated input voltage pin.
8
Input pin for Voltage Detector (V
DET
).
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相关代理商/技术参数 |
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| TC1301A-ADAVUA | 功能描述:低压差稳压器 - LDO Dual CMOS LDO 300mA & 150mA 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 |
| TC1301A-ADAVUATR | 功能描述:低压差稳压器 - LDO Dual CMOS LDO 300mA & 150mA 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 |
| TC1301A-APAVMF | 功能描述:低压差稳压器 - LDO Dual CMOS LDO 300mA & 150mA 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 |
| TC1301A-APAVMFTR | 功能描述:低压差稳压器 - LDO Dual CMOS LDO 300mA & 150mA 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 |
| TC1301A-APAVUA | 功能描述:低压差稳压器 - LDO Dual CMOS LDO 300mA & 150mA 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 |
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