参数资料
型号: LT1942EUF#TRPBF
厂商: Linear Technology
文件页数: 8/16页
文件大小: 0K
描述: IC REG SW QUAD TFT LCD 24-QFN
标准包装: 2,500
应用: 转换器,TFT
输入电压: 2.6 V ~ 16 V
输出数: 4
输出电压: 1.25 V ~ 36 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 24-WFQFN 裸露焊盘
供应商设备封装: 24-QFN 裸露焊盘(4x4)
包装: 带卷 (TR)
LT1942
PI FU CTIO S
LED1 (Pin 18): First Input of Current Mirror for an LED
String. Connect the negative end of first string of LEDs to
this pin. If not in use, leave floating.
SW4 (Pin 19): Switch Pin for LED Switcher. This is the
collector of an internal NPN power switch. Minimize the
metal trace area connected to this pin to minimize EMI.
SW1 (Pin 20): Switch Pin for AV DD Switcher. This is the
collector of an internal NPN Power switch. Minimize the
metal trace area connected to this pin to minimize EMI.
V CC (Pin 22): Input Supply. Must be locally bypassed.
D2 (Pin 23): Anode Connection of Internal Schottky Diode
for V OFF Switcher.
SW2 (Pin 24): Switch Pin for V OFF Switcher. This is the
collector of an internal NPN Power switch. Minimize the
metal trace area connected to this pin to minimize EMI.
SGND (Pin 25): Signal Ground. This is the Exposed Pad,
which must be soldered directly to a local ground plane to
achieve optimum thermal performance.
PGND14 (Pin 21): Power Ground for LED Switcher and
AV DD Switcher. Tie directly to local ground plane.
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