参数资料
型号: LT1534CS-1
厂商: LINEAR TECHNOLOGY CORP
元件分类: 稳压器
英文描述: RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS
中文描述: 2 A SWITCHING REGULATOR, 250 kHz SWITCHING FREQ-MAX, PDSO16
封装: 0.150 INCH, PLASTIC, SOP-16
文件页数: 3/16页
文件大小: 222K
代理商: LT1534CS-1
3
LT1534/LT1534-1
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
A
= 25
°
C, V
IN
= 5V, V
C
= 0.9V, V
FB
= V
REF
. COL, SHDN, NFB, all other pins open
unless otherwise noted.
The
G
denotes the specifications which apply over the full operating
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
SYMBOL
Error Amplifiers
V
NFR
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Negative Feedback Reference Voltage
Measured at Negative Feedback Pin with
Feedback Pin Open
V
NFB
= V
NFR
2.7V
V
IN
23V
G
–2.550
–2.500
–2.420
V
I
NFR
NFB
REG
Negative Feedback Input Current
Negative Feedback Reference Voltage
Line Regulation
Error Amplifier Transconductance
G
–37
–25
0.002
μ
A
G
0.05
%/V
g
m
I
C
=
±
25
μ
A
1100
700
120
120
1500
1900
2300
350
350
μ
mho
μ
mho
G
I
ESK
I
ESRC
V
CLH
V
CLL
A
V
Oscillator and Sync
f
MAX
f
SYNC
R
SYNC
V
FBfs
Output Switches
DC
MAX
t
IBL
BV
COL
R
ON
I
LIM
Error Amplifier Sink Current
Error Amplifier Source Current
Error Amplifier Clamp Voltage
Error Amplifier Clamp Voltage
Error Amplifier Voltage Gain
V
FB
= V
REF
+ 150mV, V
C
= 0.9V, V
SHDN
= 1V
V
FB
= V
REF
– 150mV, V
C
= 0.9V, V
SHDN
= 1V
High Clamp, V
FB
= 1V
Low Clamp, V
FB
= 1.5V
G
200
200
1.33
0.1
250
μ
A
μ
A
V
V
V/V
G
180
Maximum Switch Frequency
Synchronization Frequency Range
SYNC Pin Input Resistance
FB Pin Threshold for Frequency Shift
250
kHz
kHz
k
f
OSC
= 250kHz
G
375
40
0.4
5% Reduction from Nominal
V
Maximum Switch Duty Cycle
Switch Current Limit Blanking Time
Output Switch Breakdown Voltage
Output Switch-On Resistance
Switch Current Limit
R
VSL
= R
CSL
= 4.9k, f
OSC
= 25kHz
G
88
91
200
%
ns
V
A
A
2.7V
V
IN
23V
I
COL
= 1.5A, Both COL Pins Tied Together
Duty Cycle = 30%
Duty Cycle = 80%
G
35
G
0.25
0.43
2
1.6
I
IN
/
I
SW
Supply Current Increase During
Switch-On Time
16
mA/A
Slew Control
V
SLEWR
V
SLEWF
I
SLEWR
I
SLEWF
Output Voltage Slew Rising Edge
Output Voltage Slew Falling Edge
Output Current Slew Rising Edge
Output Current Slew Falling Edge
R
VSL
, R
CSL
= 17k
R
VSL
, R
CSL
= 17k
R
VSL
, R
CSL
= 17k
R
VSL
, R
CSL
= 17k
11
14.5
1.3
1.3
V/
μ
s
V/
μ
s
A/
μ
s
A/
μ
s
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