参数资料
型号: LTC3780EG#TRPBF
厂商: Linear Technology
文件页数: 11/30页
文件大小: 0K
描述: IC REG CTRLR BST PWM CM 24-SSOP
标准包装: 1,800
PWM 型: 电流模式
输出数: 1
频率 - 最大: 440kHz
占空比: 99%
电源电压: 4 V ~ 36 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 85°C
封装/外壳: 24-SSOP(0.209",5.30mm 宽)
包装: 带卷 (TR)
LTC3780
PIN FUNCTIONS
(SSOP/QFN)
BG2, BG1 (Pins 16, 18/Pins 18, 20): Bottom Gate Drive.
Drives the gate of the bottom N-channel MOSFET between
ground and INTV CC .
PGND (Pin 17/Pin 19): Power Ground. Connect this pin
closely to the source of the bottom N-channel MOSFET, the
(–) terminal of C VCC and the (–) terminal of C IN (Figure 11).
INTV CC (Pin 19/Pin 21): Internal 6V Regulator Output. The
driver and control circuits are powered from this voltage.
Bypass this pin to ground with a minimum of 4.7μF low
ESR tantalum or ceramic capacitor.
EXTV CC (Pin 20/Pin 22): External V CC Input. When EXT-
V CC exceeds 5.7V, an internal switch connects this pin to
INTV CC and shuts down the internal regulator so that the
controller and gate drive power is drawn from EXTV CC . Do
not exceed 7V at this pin and ensure that EXTV CC < V IN .
V IN (Pin 21/Pin 23): Main Input Supply. Bypass this pin
to SGND with an RC filter (1Ω, 0.1μF).
3780ff
For more information www.linear.com/LTC3780
11
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