參數(shù)資料
型號(hào): LTC3409EDD
廠商: LINEAR TECHNOLOGY CORP
元件分類(lèi): 穩(wěn)壓器
英文描述: 600mA Low Vin Buck Regulator in 3mm x 3mm DFN
中文描述: SWITCHING REGULATOR, 3000 kHz SWITCHING FREQ-MAX, PDSO8
封裝: 3 X 3 MM, PLASTIC, MO-229-WEED, DFN-8
文件頁(yè)數(shù): 2/16頁(yè)
文件大?。?/td> 246K
代理商: LTC3409EDD
2
LTC3409
3409f
SYMBOL
V
RUN
I
RUN
V
MODE
I
MODE
V
SYNCTH
I
SYNC
V
FB
PARAMETER
RUN Threshold
RUN Leakage Current
MODE Threshold
MODE Leakage Current
SYNC Threshold
SYNC Leakage Current
Regulated Feedback Voltage
CONDITIONS
MIN
0.3
TYP
0.65
0.01
0.65
0.01
0.65
0.01
0.6130
0.6130
0.6130
MAX
1.1
1
1.1
1
1.1
1
0.6252
0.6268
0.6283
±
30
85
0.4
0.4
1.3
UNITS
V
μ
A
V
μ
A
V
μ
A
V
V
V
nA
mV
%/V
%/V
0.3
0.3
(Note 4) T
A
= 25
°
C
(Note 4) 0
°
C
T
A
85
°
C
(Note 4) –40
°
C
T
A
85
°
C
0.6007
0.5992
0.5977
I
VFB
V
OVL
V
FB
V
OUT
I
PK
Feedback Current
V
FBOVL
Overvoltage Lockout
Reference Voltage Line Regulation
Output Voltage Line Regulation
Peak Inductor Current
V
OVL
=
V
FBOVL
– V
FB
(Note 6)
(Note 4)
I
OUT
= 100mA, 1.6V < V
IN
< 5.5V
V
IN
= 2.2V, V
FB
= 0.5V or V
OUT
= 90%,
Duty Cycle < 35%
35
61
0.04
0.04
1
0.75
A
V
LOADREG
V
IN
I
S
Output Voltage Load Regulation
Input Voltage Range
Input DC Bias Current
Active Mode
Sleep Mode
Shutdown
Nominal Oscillator Frequency
0.5
%
V
1.6
5.5
(Note 5)
V
OUT
= 90%, I
LOAD
= 0A
V
OUT
= 103%, I
LOAD
= 0A
V
RUN
= 0V, V
IN
= 5.5V
SYNC = GND
SYNC = V
IN
When SYNC Input is Toggling (Note 7)
350
65
0.1
1.7
2.6
0.63
1
3
100
1
475
120
5
2.1
3.0
μ
A
μ
A
μ
A
f
OSC
0.9
1.8
MHz
MHz
SYNC TH
SYNC f
MIN
SYNC f
MAX
SYNC PW
t
SS
SYNC Threshold
Minimum SYNC Pin Frequency
Maximum SYNC Pin Frequency
Minimum SYNC Pulse Width
Soft-Start Period
V
MHz
MHz
ns
ms
RUN
Input Supply Voltage .................................. –0.3V to 6V
RUN, V
FB
, MODE, SYNC Voltages.–0.3V to (V
IN
+ 0.3V)
SW Voltage...................................–0.3V to (V
IN
+ 0.3V)
Operating Temperature Range (Note 2).. –40
°
C to 85
°
C
Junction Temperature (Note 3)............................ 125
°
C
Storage Temperature Range................ –65
°
C to 125
°
C
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ABSOLUTEW
(Note 1)
W
W
U
PACKAGE/ORDER U
U
W
LTC3409EDD
ORDER PART
NUMBER
DD PART MARKING
LBNM
T
JMAX
= 125
°
C,
θ
JA
= 43
°
C/W
EXPOSED PAD (PIN 9) IS GND
MUST BE SOLDERED TO PCB
The
denotes specifications which apply over the full operating temperature range, otherwise specifications are T
A
= 25
°
C.
V
IN
= 2.2V unless otherwise specified.
ELECTRICAL CHARACTERISTICS
TOP VIEW
9
DD PACKAGE
8-LEAD (3mm
×
3mm) PLASTIC DFN
5
6
7
8
4
3
2
1
V
FB
GND
V
IN
V
IN
SYNC
RUN
SW
MODE
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