參數(shù)資料
型號： LTC3727EG
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS
中文描述： 3 A SWITCHING CONTROLLER, 580 kHz SWITCHING FREQ-MAX, PDSO28
封裝： 5.30 MM, PLASTIC, SSOP-28
文件頁數(shù)： 4/32頁
文件大小： 398K
代理商： LTC3727EG
4
LTC3727/LTC3727-1
3727f
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2:
The LTC3727E/LTC3727E-1 are 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 formulas:
LTC3727EG/LTC3727EG-1: T
J
= T
A
+ (P
D
95
°
C/W)
LTC3727EUH-1: T
J
= T
A
+ (P
D
34
°
C/W)
Efficiency vs Output Current
and Mode (Figure 13)
Efficiency vs Output Current
(Figure 13)
Efficiency vs Input Voltage
(Figure 13)
TYPICAL PERFOR U
OUTPUT CURRENT (A)
0.001
0
E
10
30
40
50
100
70
0.01
0.1
1
3727 G01
20
80
90
60
10
FORCED
CONTINUOUS
MODE
Burst Mode
OPERATION
V
IN
= 15V
V
OUT
= 8.5V
CONSTANT
FREQUENCY
(BURST DISABLE)
OUTPUT CURRENT (A)
0.001
E
70
80
10
3727 G02
60
50
0.01
0.1
1
100
90
V
IN
= 10V
V
IN
= 15V
V
IN
= 7V
V
IN
= 20V
V
OUT
= 5V
INPUT VOLTAGE (V)
5
E
70
80
3727 G03
60
50
15
25
35
100
V
OUT
= 5V
I
OUT
= 3A
90
The
G
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25
°
C. V
IN
= 15V, V
RUN/SS1, 2
= 5V unless otherwise noted.
ELECTRICAL CHARACTERISTICS
SYMBOL
3.3V Linear Regulator
V
3.3OUT
V
3.3IL
V
3.3VL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
3.3V Regulator Output Voltage
3.3V Regulator Load Regulation
3.3V Regulator Line Regulation
No Load
I
3.3
= 0mA to 10mA
6V < V
IN
< 30V (LTC3727)
6V < V
IN
< 30V (LTC3727-1)
G
3.25
3.35
0.5
0.05
0.05
3.45
2.5
0.2
0.3
V
%
%
%
PGOOD Output
V
PGL
I
PGOOD
V
PG
PGOOD Voltage Low
PGOOD Leakage Current
PGOOD Trip Level, Either Controller
I
PGOOD
= 2mA
V
PGOOD
= 5V
V
OSENSE
with Respect to Set Output Voltage
V
OSENSE
Ramping Negative
V
OSENSE
Ramping Positive
0.1
0.3
±
1
V
μ
A
–6
6
–7.5
7.5
–9.5
9.5
%
%
Note 4:
The LTC3727/LTC3727-1 are tested in a feedback loop that servos
V
ITH1, 2
to a specified voltage and measures the resultant V
OSENSE1, 2.
Note 5:
Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency. See Applications Information.
Note 6:
Rise and fall times are measured using 10% and 90% levels. Delay
times are measured using 50% levels.
Note 7:
The minimum on-time condition is specified for an inductor
peak-to-peak ripple current
≥
40% of I
MAX
(see minimum on-time
considerations in the Applications Information section).
相關(guān)PDF資料
PDF描述
LTC3727-1 RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS
LTC3727EUH-1 RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS
LTC3728 2-Phase Step-Up DC/DC Controller
LT3782 2-Phase Step-Up DC/DC Controller
LT3782EFE 2-Phase Step-Up DC/DC Controller
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