參數(shù)資料
型號(hào)： LTC3405AES6-1.8
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)： 2/16頁
文件大小： 235K
代理商： LTC3405AES6-1.8
2
LTC3405A-1.5/LTC3405A-1.8
sn3405a1518 3405a1518fs
SYMBOL
I
PK
V
OUT
PARAMETER
Peak Inductor Current
Regulated Output Voltage
CONDITIONS
V
IN
= 3V, V
OUT
= 90%, Duty Cycle < 35%
LTC3405A-1.5, MODE = 3.6V
LTC3405A-1.8, MODE = 3.6V
V
OVL
= V
OVL
– V
OUT
V
IN
= 2.5V to 5.5V
MIN
375
1.455
1.746
2.5
TYP
500
1.500
1.800
7.8
0.04
0.5
MAX
625
1.545
1.854
13
0.4
UNITS
mA
G
G
V
V
%
V
OVL
V
OUT
V
LOADREG
V
IN
I
S
Output Overvoltage Lockout
Output Voltage Line Regulation
Output Voltage Load Regulation
Input Voltage Range
Input DC Bias Current
Pulse Skipping Mode
Burst Mode
Operation
Shutdown
Oscillator Frequency
G
%/V
%
V
G
2.5
5.5
(Note 4)
V
OUT
= 90%, MODE = 3.6V, I
LOAD
= 0A
V
OUT
= 103%, MODE = 0V, I
LOAD
= 0A
V
RUN
= 0V, V
IN
= 4.2V
V
OUT
= 100%
V
OUT
= 0V
I
SW
= 100mA
I
SW
= –100mA
V
RUN
= 0V, V
SW
= 0V or 5V, V
IN
= 5V
300
20
0.1
1.5
170
0.7
0.6
±
0.01
1
±
0.01
1.5
±
0.01
400
35
1
1.8
μ
A
μ
A
μ
A
f
OSC
G
1.2
MHz
kHz
R
PFET
R
NFET
I
LSW
V
RUN
I
RUN
V
MODE
I
MODE
R
DS(ON)
of P-Channel FET
R
DS(ON)
of N-Channel FET
SW Leakage
RUN Threshold
RUN Leakage Current
MODE Threshold
MODE Leakage Current
0.85
0.90
±
1
1.5
±
1
2
±
1
μ
A
V
μ
A
V
μ
A
G
0.3
G
G
0.3
G
LTC3405AES6-1.5
LTC3405AES6-1.8
S6 PART MARKING
T
JMAX
= 125
°
C,
θ
JA
= 250
°
C/W
ORDER PART
NUMBER
(Note 1)
Input Supply Voltage .................................. –0.3V to 6V
MODE, RUN, V
OUT
Voltages....................... –0.3V to V
IN
SW Voltage.................................. –0.3V to (V
IN
+ 0.3V)
P-Channel Switch Source Current (DC) ............. 400mA
N-Channel Switch Sink Current (DC) ................. 400mA
Peak SW Sink and Source Current .................... 630mA
Operating Temperature Range (Note 2).. –40
°
C to 85
°
C
Junction Temperature (Note 3)............................ 125
°
C
Storage Temperature Range................ –65
°
C to 150
°
C
Lead Temperature (Soldering, 10 sec)................. 300
°
C
Consult LTC Marketing for parts specified with wider operating temperature ranges.
The
G
denotes specifications which apply over the full operating temperature range, otherwise specifications are T
A
= 25
°
C.
V
IN
= 3.6V unless otherwise specified.
LTZQ
LTZP
ABSOLUTEW
W
W
U
PACKAGE/ORDER U
U
W
ELECTRICAL CHARACTERISTICS
RUN 1
GND 2
SW 3
6 MODE
5 V
OUT
4 V
IN
TOP VIEW
S6 PACKAGE
6-LEAD PLASTIC SOT-23
Burst Mode is a registered trademark of Linear Technology Corporation.
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2:
The LTC3405AE is guaranteed to meet performance specifications
from 0
°
C to 70
°
C. Specifications over the –40
°
C to 85
°
C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 3:
T
J
is calculated from the ambient temperature T
A
and power
dissipation P
D
according to the following formula:
LTC3405A: T
J
= T
A
+ (P
D
)(250
°
C/W)
Note 4:
Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency.
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