參數(shù)資料
型號: TC1302BDTVMFTR
廠商: Microchip Technology Inc.
元件分類: 基準(zhǔn)電壓源/電流源
英文描述: LOW QUIESCENT CURRENT DUAL OUTPUT LDO
中文描述: 低靜態(tài)電流雙輸出穩(wěn)壓器
文件頁數(shù): 10/26頁
文件大?。?/td> 570K
代理商: TC1302BDTVMFTR
TC1302A/B
DS21333B-page 10
2005 Microchip Technology Inc.
3.0
TC1302A PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 3-1.
TABLE 3-1:
TC1302A PIN FUNCTION TABLE
3.1
Regulated Output Voltage #1
(V
OUT1
)
Connect V
OUT1
to the positive side of the V
OUT1
capacitor and load. 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 TC1302B
if ON/OFF control of V
OUT1
is desired.
3.2
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).
3.3
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.
3.4
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.
3.5
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.
3.6
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.
Pin No.
Name
Function
1
2
3
4
NC
V
OUT1
GND
Bypass
No connect.
Regulated output voltage #1, capable of 300 mA.
Circuit ground pin.
Internal reference bypass pin. A 10 nF external capacitor can be used to further reduce
output noise and improve PSRR performance.
Output #2 shutdown control input.
Regulated output voltage #2, capable of 150 mA.
Unregulated input voltage pin.
No connect.
5
6
7
8
SHDN2
V
OUT2
V
IN
NC
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