參數(shù)資料
型號(hào)： LTC3405AES6-1.5
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： 1.5V, 1.8V, 1.5MHz, 300mA Synchronous Step-Down Regulators in ThinSOT
中文描述： 0.63 A SWITCHING REGULATOR, 1800 kHz SWITCHING FREQ-MAX, PDSO6
封裝： PLASTIC, MO-193, TSOT-23, 6 PIN
文件頁數(shù)： 5/16頁
文件大小： 235K
代理商： LTC3405AES6-1.5
5
LTC3405A-1.5/LTC3405A-1.8
sn3405a1518 3405a1518fs
PIU
RUN (Pin 1):
Run Control Input. Forcing this pin above
1.5V enables the part. Forcing this pin below 0.3V shuts
down the device. In shutdown, all functions are disabled
drawing <1
μ
A supply current. Do not leave RUN floating.
GND (Pin 2):
Ground Pin.
SW (Pin 3):
Switch Node Connection to Inductor. This pin
connects to the drains of the internal main and synchro-
nous power MOSFET switches.
V
IN
(Pin 4):
Main Supply Pin. Must be closely decoupled
to GND, Pin 2, with a 2.2
μ
F or greater ceramic capacitor.
V
OUT
(Pin 5):
Output Voltage Feedback Pin. An internal
resistive divider divides the output voltage down for com-
parison to the internal 1.2V reference voltage.
MODE (Pin 6):
Mode Select Input. To select pulse skip-
ping mode, tie to V
IN
. Grounding this pin selects Burst
Mode operation. Do not leave this pin floating.
3405A1518
G20
V
OUT
100mV/DIV
AC
COUPLED
I
LOAD
200mA/DIV
I
L
200mA/DIV
40
μ
s/DIV
V
IN
= 3.6V
V
OUT
= 1.8V
I
LOAD =
20mA TO 250mA
PULSE SKIPPING MODE
V
OUT
100mV/DIV
AC
COUPLED
I
200mA/DIV
I
L
200mA/DIV
3405A1518
G21
40
μ
s/DIV
V
IN
= 3.6V
V
OUT
= 1.8V
I
LOAD =
20mA TO 250mA
Burst Mode OPERATION
3405A1518
G22
40
μ
s/DIV
V
IN
= 3.6V
V
OUT
= 1.8V
I
LOAD =
0mA TO 250mA
Burst Mode OPERATION
V
100mV/DIV
AC
COUPLED
I
200mA/DIV
I
L
200mA/DIV
TYPICAL PERFOR U
(From Figure 1a)
Load Step
Load Step
Load Step
相關(guān)PDF資料
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