参数资料
型号: LTC3810EG#TRPBF
厂商: Linear Technology
文件页数: 10/38页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM CM 28-SSOP
标准包装: 2,000
PWM 型: 电流模式
输出数: 1
频率 - 最大: 1MHz
占空比: 93%
电源电压: 6.2 V ~ 100 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 125°C
封装/外壳: 28-SSOP(0.209",5.30mm 宽)
包装: 带卷 (TR)
LTC3810
PIN FUNCTIONS
BG (Pin 19): Bottom Gate Drive. The BG pin drives the
gate of the bottom N-channel synchronous switch MOSFET.
This pin swings from BGRTN to DRV CC .
BGRTN (Pin 20): Bottom Gate Return. This pin connects to
the source of the pull-down MOSFET in the BG driver and
is normally connected to ground. Connecting a negative
supply to this pin allows the synchronous MOSFET ’s gate
to be pulled below ground to help prevent false turn-on
during high dV/dt transitions on the SW node. See the
Applications Information section for more details.
SENSE + , SENSE – (Pin 25, Pin 21): Current Sense Com-
parator Input. The (+) input to the current comparator is
normally connected to SW unless using a sense resistor.
The (–) input is used to accurately kelvin sense the bottom
SW (Pin 26): Switch Node Connection to Inductor and
Bootstrap Capacitor. Voltage swing at this pin is from a
Schottky diode (external) voltage drop below ground
to V IN .
TG (Pin 27): Top Gate Drive. The TG pin drives the gate of
the top N-channel synchronous switch MOSFET. The TG
driver draws power from the BOOST pin and returns to the
SW pin, providing true ?oating drive to the top MOSFET.
BOOST (Pin 28): Top Gate Driver Supply. The BOOST pin
supplies power to the ?oating TG driver. BOOST should
be bypassed to SW with a low ESR (X5R or better) 0.1μF
capacitor. An additional fast recovery Schottky diode from
DRV CC to the BOOST pin will create a complete ?oating
charge-pumped supply at BOOST.
side of the sense resistor or MOSFET.
3810fc
10
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LTC3810EUH-5#TRPBF 功能描述:IC REG CTRLR BUCK PWM CM 32-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 V 降压:无 升压:是 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:24-WQFN 裸露焊盘 包装:带卷 (TR)
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