參數(shù)資料
型號： LTC1629IG-PG
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： 5 A DUAL SWITCHING CONTROLLER, 310 kHz SWITCHING FREQ-MAX, PDSO28
封裝： 0.209 INCH, PLASTIC, SSOP-28
文件頁數(shù)： 4/28頁
文件大小： 330K
代理商： LTC1629IG-PG
4
LTC1629/LTC1629-PG
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
A
= 25
°
C. V
IN
= 15V, V
RUN/SS1, 2
= 5V unless otherwise noted.
The
G
denotes the specifications which apply over the full operating
SYMBOL
V
OS
PARAMETER
Input Offset Voltage
CONDITIONS
Op Amp Mode; V
CM
= 2.5V; LTC1629 Only
V
DIFFOUT
= 5V; I
DIFFOUT
= 1mA
Op Amp Mode; LTC1629 Only
Op Amp Mode; 0.7V
≤
V
DIFFOUT
< 10V; LTC1629 Only
Op Amp Mode; LTC1629 Only
Op Amp Mode; 0V < V
CM
< 3V; LTC1629 Only
Op Amp Mode; 6V < V
IN
< 30V; LTC1629 Only
Op Amp Mode; V
DIFFOUT
= 0V; LTC1629 Only
Op Amp Mode; I
DIFFOUT
= 1mA; LTC1629 Only
Op Amp Mode; I
DIFFOUT
= 1mA; LTC1629 Only
Op Amp Mode; R
L
= 2k; LTC1629 Only
MIN
TYP
MAX
6
UNITS
mV
Note 4:
Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency. See Applications Information.
Note 5:
When the AMPMD pin is high, the IC pins are connected directly to
the internal op amp inputs. When the AMPMD pin is low, internal MOSFET
switches connect four 40k resistors around the op amp to create a
standard unity-gain differential amp.
Note 6:
The minimum on-time condition corresponds to the on inductor
peak-to-peak ripple current
≥
40% of I
MAX
(see Minimum On-Time
Considerations in the Applications Information section).
Note 1:
Absolute Maximum Ratings are those values beyond which the
life of a device may be impaired.
Note 2:
T
J
is calculated from the ambient temperature T
A
and power
dissipation P
D
according to the following formulas:
LTC1629/LTC1629-PG: T
J
= T
A
+ (P
D
95
°
C/W)
Note 3:
The LTC1629/LTC1629-PG are tested in a feedback loop that
servos V
ITH
to a specified voltage and measures the resultant V
EAIN
.
I
B
A
OL
V
CM
CMRR
OA
PSRR
OA
I
CL
V
OMAX
GBW
SR
Input Bias Current
Open Loop DC Gain
Common Mode Input Voltage Range
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Maximum Output Current
Maximum Output Voltage
Gain-Bandwidth Product
Slew Rate
30
5000
200
nA
V/mV
0
3
V
70
70
10
10
90
90
35
11
2
5
dB
dB
mA
V
MHz
V/
μ
s
TYPICAL PERFOR AU
Efficiency vs Output Current
(Figure 12)
Efficiency vs Output Current
(Figure 12)
Efficiency vs Input Voltage
(Figure 12)
OUTPUT CURRENT (A)
0.1
E
100
80
60
40
20
0
1629 G01
1
10
100
V
OUT
= 3.3V
V
EXTVCC
= 5V
I
OUT
V
IN
= 5V
V
IN
= 8V
V
IN
= 12V
V
IN
= 20V
OUTPUT CURRENT (A)
1
E
70
80
1629 G02
60
50
10
100
100
90
V
EXTVCC
= 0V
V
OUT
= 3.3V
V
EXTVCC
= 5V
V
IN
(V)
5
E
100
90
80
70
1629 G03
10
15
20
V
OUT
= 3.3V
V
EXTVCC
= 5V
I
OUT
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