参数资料
型号: LT1304CS8#TR
厂商: Linear Technology
文件页数: 4/16页
文件大小: 0K
描述: IC REG BOOST ADJ 0.2A 8SOIC
标准包装: 2,500
类型: 升压(升压)
输出类型: 可调式
输出数: 1
输出电压: 可调至 25V
输入电压: 1.5 V ~ 8 V
PWM 型: Burst Mode?
频率 - 开关: 最高 300kHz
电流 - 输出: 200mA
同步整流器:
工作温度: 0°C ~ 70°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
LT1304/LT1304-3.3/LT1304-5
TYPICAL PERFOR M A N CE CHARACTERISTICS
V OUT
100mV/DIV
AC COUPLED
I LOAD
200mA
0
Load Transient Response
V OUT
100mV/DIV
AC COUPLED
V SW
5V/DIV
I L
500mA/DIV
Burst Mode TM Operation
100 μ s/DIV
1304 G07
V IN = 2.5V
20 μ s/DIV
1304 G08
V OUT = 5V
I LOAD = 185mA
L = 22 μ H
Burst Mode is a trademark of Linear Technology Corporation.
PI N FU N CTIO N S
LBI (Pin 1): Low-Battery Detector Input. When voltage on
this pin is less than 1.17V, detector output is low.
LBO (Pin 2): Low-Battery Detector Output. Open collector
can sink up to 500 μ A. Low-battery detector remains active
when device is shut down.
V IN (Pin 3): Input Supply. Must be bypassed close (< 0.2")
to the pin. See required layout in the Typical Applications.
SW (Pin 4): Collector of Power NPN. Keep copper traces on
this pin short and direct to minimize RFI.
GND (Pin 5): Device Ground. Must be low impedance;
solder directly to ground plane.
4
I LIM (Pin 6): Current Limit Set Pin. Float for 1A peak switch
current; a resistor to ground will lower peak current.
SHDN (Pin 7): Shutdown Input. When low, switching
regulator is turned off. The low-battery detector remains
active. The SHDN input should not be left floating. If SHDN
is not used, tie the pin to V IN .
FB/SENSE (Pin 8): On the LT1304 (adjustable) this pin
goes to the comparator input. On the fixed-output ver-
sions, the pin connects to the resistor divider which sets
output voltage. The divider is disconnected from the pin
during shutdown.
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