参数资料
型号: LT3467IS6#TRMPBF
厂商: Linear Technology
文件页数: 5/18页
文件大小: 0K
描述: IC REG BOOST ADJ 1.1A SOT23-6
标准包装: 500
类型: 升压(升压)
输出类型: 可调式
输出数: 1
输出电压: 1.26 V ~ 40 V
输入电压: 2.4 V ~ 16 V
PWM 型: 电流模式
频率 - 开关: 1.3MHz
电流 - 输出: 1.1A
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: SOT-23-6 细型,TSOT-23-6
包装: 带卷 (TR)
供应商设备封装: TSOT-23-6
LT3467/LT3467A
PIN FUNCTIONS
(DFN/TSOT)
FB (Pin 1/Pin 3): Feedback Pin. Reference voltage is 1.255V.
Connect resistive divider tap here. Minimize trace area at
FB. Set V OUT = 1.255V(1 + R1/R2).
GND (Pins 2, 5, 9/Pin 2): Ground. Tie directly to local
ground plane.
SW (Pins 3, 4/Pin 1): Switch Pin. (Collector of internal
NPN power switch) Connect inductor/diode here and
minimize the metal trace area connected to this pin to
minimize EMI.
BLOCK DIAGRAM
250k
SS
V IN (Pin 6/Pin 6): Input Supply Pin. Must be locally
bypassed.
SS (Pin 7/Pin 5): Soft-Start Pin. Place a soft-start capacitor
here. Upon start-up, 4μA of current charges the capacitor
to 1.255V. Use a larger capacitor for slower start-up. Leave
?oating if not in use.
SHDN (Pin 8/Pin 4): Shutdown Pin. Tie to 2.4V or more
to enable device. Ground to shut down.
V IN
1.255V
REFERENCE
+
COMPARATOR
SW
A1
DRIVER
V OUT
R1 (EXTERNAL)
R C
C C
A2
R
S
Q
+
Q1
FB
R2 (EXTERNAL)
RAMP
GENERATOR
0.01Ω
SHUTDOWN
SHDN
FB
1.3MHz
OSCILLATOR*
*2.1MHz FOR LT3467A
GND
3467 F01
Figure 1. Block Diagram
3467afe
5
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