参数资料
型号: LT8410IDC#TRMPBF
厂商: Linear Technology
文件页数: 7/16页
文件大小: 0K
描述: IC REG BOOST ADJ 8DFN
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: 2.5 V ~ 40 V
输入电压: 2.5 V ~ 16 V
PWM 型: 电流模式
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)
LT8410/LT8410-1
PIN FUNCTIONS
V FBP =
SHDN(Pin1): ShutdownPin.Thispinisusedtoenable/
disable the chip. Drive below 0.3V to disable the chip. Drive
above 1.45V to activate the chip. Do not float this pin.
V CC (Pin 2): Input Supply Pin. Must be locally bypassed
to GND. See the Typical Applications section.
GND (Pin 3): Ground. Tie directly to local ground plane.
SW (Pin 4): Switch Pin. This is the collector of the inter-
nal NPN power switch. Minimize the metal trace area
connected to this pin to minimize EMI.
V OUT (Pin 5): Drain of Output Disconnect PMOS. Place
a bypass capacitor from this pin to GND.
CAP (Pin 6): Cathode of the Internal Schottky Diode. Place
a bypass capacitor from this pin to GND.
BLOCK DIAGRAM
V REF (Pin 7): Reference Pin. Soft-start can be achieved
by placing a capacitor from this pin to GND. This cap
will be discharged for 70μs (typical) at the beginning
of start-up and then be charged to 1.235V with a 10μA
current source.
FBP (Pin 8): Positive Feedback Pin. This pin is the error
amplifier’s positive input terminal. To achieve the desired
output voltage, choose the FBP pin voltage (V FBP ) accord-
ing to the following formula:
V OUT
31.85
For protection purposes, the output voltage can not exceed
40V even if V FBP is driven higher than V REF .
Exposed Pad (Pin 9): Pin 9 is floating but must be ground-
ed for proper shielding.
2
1
5
6
4
V CC
MAX
10μA
ENABLE
CHIP
SHDN
V OUT
CAP
SW
+
1.235V
+
12.4M
7
V REF
1.235V
400k
OUTPUT DISCONNECT
CONTROL
DISCHARGE
CONTROL
FB
TIMING AND PEAK
CURRENT CONTROL
SWITCH
CONTROL
8
FBP
VC
+
1.235V
EXPOSED PAD
(GND)
9
3
GND
84101fb
7
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