參數(shù)資料
型號(hào): LT1074HVIT7#35
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: 8.5 A SWITCHING REGULATOR, 125 kHz SWITCHING FREQ-MAX, PZFM7
封裝: PLASTIC, TO-220, 7 PIN
文件頁(yè)數(shù): 12/17頁(yè)
文件大?。?/td> 201K
代理商: LT1074HVIT7#35
LT1074/LT1076
4
sn1074 1074fds
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: To calculate maximum switch “on” voltage at currents between
low and high conditions, a linear interpolation may be used.
Note 3: A feedback pin voltage (VFB) of 2.5V forces the VC pin to its low
clamp level and the switch duty cycle to zero. This approximates the zero
load condition where duty cycle approaches zero.
Note 4: Total voltage from VIN pin to ground pin must be ≥ 8V after start-
up for proper regulation.
Note 5: Switch frequency is internally scaled down when the feedback pin
voltage is less than 1.3V to avoid extremely short switch on times. During
testing, VFB is adjusted to give a minimum switch on time of 1s.
Note 6: ILIM
(LT1074)
, ILIM
(LT1076).
Note 7: Switch to input voltage limitation must also be observed.
Note 8: VMAX = 40V for the LT1074/76 and 60V for the LT1074HV/76HV.
Note 9: Does not include switch leakage.
RLIM – 1k
2k
RLIM – 1k
5.5k
ELECTRICAL CHARACTERISTICS
6V
REGULATOR
AND BIAS
+
-POWER
SHUTDOWN
10 A
320 A
+
2.35V
0.3V
CURRENT
LIMIT
SHUTDOWN
4.5V
10k
S
+
CURRENT
LIMIT
COMP
C2
15
400
+
C1
R/S
LATCH
R
Q
X
Y
Z
+
A1
ERROR
AMP
FB
V
100kHz
OSCILLATOR
ANALOG
MULTIPLIER
XY
Z
FREQ SHIFT
SYNC
G1
PULSE WIDTH
COMPARATOR
24V (EQUIVALENT)
2.21V
SWITCH
OUTPUT
(V
)
0.04
250
500
INPUT SUPPLY
SHUTDOWN*
I
*
6V TO ALL
CIRCUITRY
LIM
SW
VIN
C
LT1074 BD01
100
SWITCH
OUTPUT (V
)
0.1
SW
3V(p-p)
LT1076
LT1074
*AVAILABLE ON PACKAGES WITH PIN
COUNTS GREATER THAN 5.
BLOCK DIAGRA
W
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