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参数资料
| 型号： | LT1612ES8#TR |
| 厂商： | Linear Technology |
| 文件页数： | 2/12页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 0.5A 8SOIC |
| 标准包装： | 2,500 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 可调至 0.6V |
| 输入电压： | 2 V ~ 5.5 V |
| PWM 型： | 电流模式，混合 |
| 频率 - 开关： | 800kHz |
| 电流 - 输出： | 500mA |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 8-SOIC |
LT1612
ABSOLUTE M AXI M U M RATINGS
(Note 1)
Supply Voltage (V IN ) ............................................... 5.5V
SW Pin Voltage ....................................................... 5.5V
FB Pin Voltage ............................................... V IN + 0.3V
V C Pin Voltage ........................................................... 2V
SHDN Pin Voltage ................................................... 5.5V
MODE Pin Voltage .................................................. 5.5V
PACKAGE/ORDER I N FOR M ATIO N
ORDER PART
BOOST Pin Voltage ....................................... V IN + 5.5V
Junction Temperature ........................................... 125 ° C
Operating Temperature Range (Note 2) ... –40 ° C to 85 ° C
Storage Temperature Range ................. – 65 ° C to 150 ° C
Lead Temperature (Soldering, 10 sec).................. 300 ° C
ORDER PART
NUMBER
TOP VIEW
NUMBER
TOP VIEW
V C 1
8
SHDN
V C 1 8 SHDN
FB 2 7 MODE
V IN 3 6 BOOST
GND 4 5 SW
MS8 PACKAGE
8-LEAD PLASTIC MSOP
LT1612EMS8
MS8 PART MARKING
FB 2
V IN 3
GND 4
S8 PACKAGE
7
6
5
MODE
BOOST
SW
LT1612ES8
S8 PART MARKING
T JMAX = 125 ° C, θ JA = 200 ° C/ W
LTMS
8-LEAD PLASTIC SO
T JMAX = 125 ° C, θ JA = 120 ° C/ W
1612
Consult factory for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The q denotes specifications which apply over the full operating
temperature range, otherwise specifications are TA = 25 ° C, VIN = VSHDN = 3V
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
I Q
Quiescent Current
MODE = 5V
MODE = 0V, Not Switching
q
q
1
160
2
220
mA
μ A
SHDN = 0V
q
1
μ A
V FB
g m
FB Voltage
FB Line Regulation
FB Pin Bias Current (Note 3)
Error Amplifier Transconductance
q
q
q
0.605
0.60
0.62
0.62
0.02
7
250
0.635
0.635
0.15
50
V
V
%/V
nA
μ mhos
Min Input Voltage
Max Input Voltage
2
5.5
V
V
f OSC
Oscillator Frequency
q
700
550
800
900
1100
kHz
kHz
f OSC Line Regulation
1
%/ V
Maximum Duty Cycle
q
85
80
90
%
%
Shutdown Threshold
Minimum Voltage for Active
Maximum Voltage for Shutdown
q
q
2
0.2
V
V
sn1612 1612fs
2
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