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參數資料
| 型號： | LTC3565IMSE#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 2.5 A SWITCHING REGULATOR, 4000 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封裝： | LEAD FREE, PLASTIC, MSOP-10 |
| 文件頁數： | 21/22頁 |
| 文件大?。?/td> | 587K |
| 代理商： | LTC3565IMSE#PBF |
LTC3565
3565fa
RT (Pin 1): Timing Resistor Pin. The oscillator frequency
is programmed by connecting a resistor from this pin to
ground.
RUN (Pin 2): Converter Enable Pin. Forcing this pin above
1.5V enables this part, while forcing it below 0.3V causes
the device to shut down. In shutdown, the device draws
<1A supply current. This pin must be driven; do not float.
SYNC/MODE (Pin 3): Combination Mode Selection and
Oscillator Synchronization Pin. This pin controls the
operation of the device. When tied to SVIN or GND, Burst
Mode operation or pulse skipping mode is selected,
respectively. If this pin is held at half of SVIN, the forced
continuous mode is selected. The oscillation frequency
can be synchronized to an external oscillator applied to
this pin. When synchronized to an external clock, pulse
skip mode is selected.
SW (Pin 4): The Switch Node Connection to the Inductor.
This pin swings from PVIN to GND.
pin Functions
GND (Pin 5, Exposed Pad Pin 11): Main Power Ground
Pin. Connect to the (–) terminal of COUT, and (–) terminal
of CIN. The exposed pad must be soldered to electrical
ground on PCB ground.
PVIN (Pin 6): Main Supply Pin. Must be closely decoupled
to GND.
SVIN (Pin 7): The Signal Power Pin. All active circuitry is
powered from this pin. Must be closely decoupled to GND.
SVIN must be greater than or equal to PVIN.
PGOOD (Pin 8): The Power Good Pin. This common drain
logic output is pulled to GND when the output voltage is
not within ±7% of regulation.
VFB (Pin 9): Receives the feedback voltage from the ex-
ternal resistive divider across the output. Nominal voltage
for this pin is 0.6V.
ITH (Pin 10): Error Amplifier Compensation Point. The
current comparator threshold increases with this control
voltage. Nominal voltage range for this pin is 0.4V to
1.4V.
NOMINAL (V)
ABSOLUTE MAX (V)
PIN
NAME
DESCRIPTION
MIN
TYP
MAX
MIN
MAX
1
RT
Timing Resistor
–0.3
0.4
SVIN
–0.3
SVIN + 0.3
2
RUN
Enable Pin
–0.3
SVIN
–0.3
SVIN
3
SYNC/MODE Mode Select/Synchronization Pin
0
SVIN
–0.3
SVIN + 0.3
4
SW
Switch Node
0
PVIN
–0.3
PVIN + 0.3
5
GND
Main Power Ground
0
6
PVIN
Main Power Supply
–0.3
5.5
–0.3
6
7
SVIN
Signal Power Supply
2.5
5.5
–0.3
6
8
PGOOD
Power Good Pin
0
SVIN
–0.3
SVIN + 0.3
9
VFB
Output Feedback Pin
0
0.8
1.0
–0.3
SVIN + 0.3
10
ITH
Error Amplifier Compensation
0
1.5
–0.3
SVIN + 0.3
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