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參數(shù)資料
| 型號： | LTC6652BHMS8-2.5 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 2.5 V, PDSO8 |
| 封裝： | PLASTIC, MSOP-8 |
| 文件頁數(shù)： | 9/12頁 |
| 文件大小： | 260K |
| 代理商： | LTC6652BHMS8-2.5 |
LTC6652
6
6652f
PIN FUNCTIONS
Bypass and Load Capacitors
The LTC6652 voltage reference does not require an input
capacitor, but a 0.1μF capacitor located close to the part
improves power supply rejection.
The LTC6652 voltage reference is stable with or without a
capacitive load. For applications where an output capacitor
is benecial, a value of 0.1μF to 10μF is recommended
depending on load conditions. The Typical Performance
Characteristics section includes a plot illustrating a region
of marginal stability. Either no or low value capacitors for
any load current are acceptable. For loads that sink current
or light loads that source current, a 0.1μF to 10μF capacitor
has stable operation. For heavier loads that source current
a 0.5μF to 10μF capacitor range is recommended.
DNC (Pin 1): Do Not Connect.
VIN (Pin 2): Power Supply. The minimum supply input is
2.8V. The maximum supply is 13.2V. Bypassing VIN with
a 0.1μF capacitor to GND will improve PSRR.
SHDN (Pin 3): Shutdown Input. This active low input
powers down the device to <2μA. For normal operation
tie this pin to VIN.
GND (Pin 4): Device Ground.
VOUT (Pin 6): Output Voltage. An output capacitor is not
required. For some applications, a capacitor between 0.1μF
to 10μF can be benecial. See the graphs in the Typical
Performance Characteristics section for further details.
GND (Pins 5,7,8): Internal function. Ground this pin.
The transient response for a 0.5V step on VIN with and
without an output capacitor is shown in Figures 2 and 3,
respectively.
The LTC6652-2.5 voltage reference is guaranteed to source
and sink up to 5mA. The test circuit for transient load step
response is shown in Figure 1. Figures 4 and 5 show a
5mA source and sink load step response without a load
capacitor, respectively.
Start-Up
The start-up characteristic of the LTC6652 is shown in
Figures 8 and 9. Note that the turn-on time is affected by
the value of the output capacitor.
BLOCK DIAGRAM
APPLICATIONS INFORMATION
VIN
SHDN
GND
VOUT
6652 BD
BANDGAP
3
6
2
4
–
+
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