參數(shù)資料
型號： LTC3806EDE
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： Synchronous Flyback DC/DC Controller
中文描述： 0.05 A SWITCHING CONTROLLER, 290 kHz SWITCHING FREQ-MAX, PDSO12
封裝： 4 X 3 MM, PLASTIC, MO-229WGED, DFN-12
文件頁數(shù)： 3/20頁
文件大?。?/td> 241K
代理商： LTC3806EDE
3
LTC3806
3806f
The
G
denotes specifications which apply over the full operating
temperature range, otherwise specifications are T
A
= 25
°
C. V
IN
= 10V, V
RUN
= 1.5V, unless otherwise specified.
ELECTRICAL CHARACTERISTICS
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
Note 2:
The LTC3806E 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:
T
J
= T
A
+ (P
D
34
°
C/W)
Note 4:
The minimum operating voltage is allowed once operation begins.
To begin operation, V
IN
must be above the rising undervoltage lockout
threshold with V
RUN
above the rising RUN input threshold.
Note 5:
The dynamic input supply current is higher due to power MOSFET
gate charging (Q
G
f
OSC
). See Applications Information.
Note 6:
The LTC3806 is tested in a feedback loop which servos V
FB
to the
reference voltage with the I
TH
pin forced to a voltage between 0V and 1.4V
(the no load to full load operating voltage range for the I
TH
pin is 0.3V to
1.23V).
TYPICAL PERFOR U
FB Voltage vs Temperature
FB Voltage Line Regulation
FB Pin Current vs Temperature
SYMBOL
Regulator
V
INTVCC
INTV
CC
V
IN
V
LDO(LOAD)
V
UVL+
V
UVL–
Gate Drivers
t
r1
t
f1
t
r2
t
f2
t
DEAD
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
INTV
CC
Regulator Output Voltage
INTV
CC
Regulator Line Regulation
V
IN
= 10V
10V
≤
V
IN
≤
20V
6
6.9
7.8
100
V
mV
INTV
CC
Load Regulation
Rising V
IN
Threshold Voltage
Falling V
IN
Threshold Voltage
0
≤
I
INTVCC
≤
20mA
–6
14
7.5
–3
15
8
%
V
V
16
8.5
Gate Driver 1 Output Rise Time
Gate Driver 1 Output Fall Time
Gate Driver 2 Output Rise Time
Gate Driver 2 Output Fall Time
Gate Driver Dead Time
C
L1
= 3300pF
C
L1
= 3300pF
C
L2
= 4700pF
C
L2
= 4700pF
C
L1
= 3300pF, C
L2
= 4700pF
25
18
25
18
100
100
100
100
100
ns
ns
ns
ns
ns
TEMPERATURE (
°
C)
–40
F
1.2400
1.2350
1.2300
1.2250
1.2200
1.2150
60
3806 G01
–15
10
35
85
V
IN
(V)
10
F
18
3806 G02
12
14 15
20
1.2310
1.2305
1.2300
1.2295
1.2290
16
11
13
19
17
T
A
= 25
°
C
TEMPERATURE (
°
C)
–40
0
F
5
10
15
20
25
30
–15
10
35
60
3806 G03
85
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