参数资料
型号: LT3483AIDC#TRPBF
厂商: Linear Technology
文件页数: 5/12页
文件大小: 0K
描述: IC REG INV ADJ 0.4A 8DFN
标准包装: 2,500
类型: 反相
输出类型: 可调式
输出数: 1
输出电压: 可调至 -38V
输入电压: 2.5 V ~ 16 V
电流 - 输出: 400mA
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-WFDFN 裸露焊盘
包装: 带卷 (TR)
供应商设备封装: 8-DFN(2x2)
LT3483/LT3483A
PIN FUNCTIONS
(DFN/TSOT-23)
FB (Pin 1/Pin 3): Feedback. Place resistor to negative
output here. Set resistor value R1 = V OUT /10μA.
GND (Pins 2, 3/Pin 2): Ground. For DFN package, tie both
pin 2 and pin 3 together to ground.
SW (Pin 4/Pin 1): Switch. Connect to external inductor
L1 and positive terminal of transfer capacitor.
V IN (Pin 5/Pin 6): Input Supply. Must be locally bypassed
with 1μF or greater.
NC (Pin 6/NA): No Internal Connection.
BLOCK DIAGRAM
D (Pin 7/Pin 5): Anode Terminal of Integrated Schottky
Diode. Connect to negative terminal of transfer capaci-
tor and external inductor L2 (flyback configuration) or
to cathode of external Schottky diode (inverting charge
pump configuration).
SHDN (Pin 8/Pin 4): Shutdown. Connect to GND to turn
device off. Connect to supply to turn device on.
Exposed Pad (Pin 9/NA): GND. The exposed pad should
be soldered to the PCB ground to achieve the rated thermal
performance.
V IN
L1A
?
C FLY
?
L1B
V OUT
C OUT
1.250V
REFERENCE
300ns
DELAY
6
V IN
1
SW
5
D
125k
S
Q
V OUT
R1
3
FB
+
R
Q
Q1
D1
25mV
+
A3
A1
+
0.1?
0.1?
A2
OPTIONAL CHARGE PUMP CONFIGURATION.
L1B REPLACED WITH:
GND
2
20mV
(LT3483)
PIN NUMBERS CORRESPOND TO THE
6-PIN TSOT-23 PACKAGE
3483 BD
D
D2
R2
V OUT
3483fc
5
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