参数资料
型号: LT1676IS8
厂商: Linear Technology
文件页数: 2/16页
文件大小: 0K
描述: IC REG BUCK ADJ 0.7A 8SOIC
标准包装: 100
类型: 降压(降压)
输出类型: 可调式
输出数: 1
输出电压: 1.24 V ~ 51 V
输入电压: 7.4 V ~ 60 V
PWM 型: 电流模式,混合
频率 - 开关: 100kHz
电流 - 输出: 700mA
同步整流器:
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
包装: 管件
供应商设备封装: 8-SOIC
LT1676
ABSOLUTE M AXI M U M RATINGS
(Note 1)
Supply Voltage ........................................................ 60V
PACKAGE/ORDER I N FOR M ATIO N
ORDER PART
Switch Voltage ......................................................... 60V
SHDN, SYNC Pin Voltage ........................................... 7V
V CC Pin Voltage ....................................................... 30V
FB Pin Voltage ........................................................... 3V
Operating Junction Temperature Range
LT1676C ................................................ 0 ° C to 125 ° C
LT1676I ............................................ – 40 ° C to 125 ° C
Storage Temperature Range ................. – 65 ° C to 150 ° C
Lead Temperature (Soldering, 10 sec).................. 300 ° C
TOP VIEW
SHDN 1 8 V C
V CC 2 7 FB
V SW 3 6 SYNC
GND 4 5 V IN
N8 PACKAGE S8 PACKAGE
8-LEAD PDIP 8-LEAD PLASTIC SO
T JMAX = 125 ° C, θ JA = 130 ° C/ W (N8)
T JMAX = 125 ° C, θ JA = 110 ° C/ W (S8)
NUMBER
LT1676CN8
LT1676CS8
LT1676IN8
LT1676IS8
S8 PART MARKING
1676
1676I
Consult factory for Military grade parts.
ELECTRICAL CHARACTERISTICS
The q denotes specifications which apply over the full operating temperature range, otherwise specifications are T A = 25 ° C.
V IN = 48V, V SW open, V CC = 5V, V C = 1.4V unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Power Supplies
V IN(MIN)
Minimum Input Voltage
q
6.7
7.0
7.4
V
V
I VIN
I VCC
V IN Supply Current
V CC Supply Current
V C = 0V
V C = 0V
q
620
3.2
800
900
4.0
μ A
μ A
mA
q
5.0
mA
V VCC
V CC Dropout Voltage
Shutdown Mode I VIN
(Note 2)
V SHDN = 0V
q
q
2.8
30
3.1
50
75
V
μ A
μ A
Feedback Amplifier
V REF
I IN
Reference Voltage
FB Pin Input Bias Current
q
1.225
1.215
1.240
600
1.255
1.265
1500
V
V
nA
g m
I SRC , I SNK
Feedback Amplifier Transconductance
Feedback Amplifier Source or Sink Current
? lc = ± 10 μ A
q
q
400
200
60
45
650
100
1000
1500
170
220
μ mho
μ mho
μ A
μ A
V CL
Feedback Amplifier Clamp Voltage
2.0
V
Reference Voltage Line Regulation
Voltage Gain
12V ≤ V IN ≤ 60V
q
200
600
0.01
%/V
V/V
Output Switch
V ON
Output Switch On Voltage
I SW = 0.5A
1.0
1.5
V
I LIM
Switch Current Limit
(Note 3)
q
0.55
0.70
1.0
A
Current Amplifier
Control Pin Threshold
Duty Cycle = 0%
0.9
1.1
1.25
V
2
Control Voltage to Switch Transconductance
2
A/V
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