参数资料
型号: LT1076CT7
厂商: Linear Technology
文件页数: 4/16页
文件大小: 0K
描述: IC REG MULTI CONFIG ADJ TO220-7
标准包装: 50
类型: 降压(降压),升压(升压),反相,回扫
输出类型: 可调式
输出数: 1
输出电压: 2.5 V ~ 50 V
输入电压: 8 V ~ 45 V
频率 - 开关: 100kHz
电流 - 输出: 2A
同步整流器:
工作温度: 0°C ~ 70°C
安装类型: 通孔
封装/外壳: TO-220-7 成形引线
包装: 管件
供应商设备封装: TO-220-7
LT1074/LT1076
ELECTRICAL CHARACTERISTICS
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
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, V FB is adjusted to give a minimum switch on time of 1 μ s.
Note 6: I LIM ≈ LIM
(LT1074) , I LIM ≈ LIM
low and high conditions, a linear interpolation may be used.
Note 3: A feedback pin voltage (V FB ) of 2.5V forces the V C pin to its low
R  – 1k
2k
R  – 1k
5.5k
(LT1076).
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 V IN pin to ground pin must be ≥ 8V after start-
up for proper regulation.
BLOCK DIAGRA
INPUT SUPPLY
Note 7: Switch to input voltage limitation must also be observed.
Note 8: V MAX = 40V for the LT1074/76 and 60V for the LT1074HV/76HV.
Note 9: Does not include switch leakage.
LT1074
10 μ A
0.3V
320 μ A
+
μ -POWER
SHUTDOWN
6V
REGULATOR
AND BIAS
6V TO ALL
CIRCUITRY
CURRENT
500 ?
2.35V
+
CURRENT
LIMIT
SHUTDOWN
LIMIT
COMP
C2
+
250 ?
0.04
SHUTDOWN*
I LIM *
FREQ SHIFT
4.5V
10k
R
100kHz
OSCILLATOR
S
R/S
LATCH
Q
G1
SYNC
V IN
3V(p-p)
R
2.21V
+
A1
ERROR
AMP
Z
ANALOG
X MULTIPLIER
XY
Z
Y
+
C1
PULSE WIDTH
COMPARATOR
400 ?
15 ?
SWITCH
OUTPUT
(V SW )
FB
V C
24V (EQUIVALENT)
LT1076
0.1 ?
*AVAILABLE ON PACKAGES WITH PIN
COUNTS GREATER THAN 5.
100 ?
SWITCH
OUTPUT (V SW )
LT1074 ? BD01
sn1074 1074fds
4
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