参数资料
型号: LTC3819EG#TRPBF
厂商: Linear Technology
文件页数: 9/32页
文件大小: 0K
描述: IC CNTRLR STEP DOWN 36-SSOP
标准包装: 2,000
应用: 控制器,Sun 服务器
输入电压: 4 V ~ 36 V
输出数: 1
输出电压: 1.03 V ~ 1.41 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 36-SSOP(0.209",5.30mm 宽)
供应商设备封装: 36-SSOP
包装: 带卷 (TR)
LTC3819
PI FU CTIO S
SW2, SW1 (Pins 25, 34): Switch Node Connections to
Inductors. Voltage swing at these pins is from a Schottky
diode (external) voltage drop below ground to V IN .
BOOST2, BOOST1 (Pins 26, 33): Bootstrapped Supplies
to the Topside Floating Drivers. External capacitors are con-
nected between the BOOST and SW pins, and Schottky
diodes are connected between the BOOST and INTV CC pins.
BG2, BG1 (Pins 27, 31): High Current Gate Drives for
Bottom N-Channel MOSFETS. Voltage swing at these pins
is from ground to INTV CC .
PGND (Pin 28): Driver Power Ground. Connect to sources
of bottom N-channel MOSFETS and the (–) terminals of C IN .
INTV CC (Pin 29): Output of the Internal 5V Linear Low
Dropout Regulator and the EXTV CC Switch. The driver and
control circuits are powered from this voltage source.
Decouple to power ground with a 1 μ F ceramic capacitor
placed directly adjacent to the IC and minimum of 4.7 μ F
additional tantalum or other low ESR capacitor.
EXTV CC (Pin 30): External Power Input to an Internal
Switch. This switch closes and supplies INTV CC, bypass-
ing the internal low dropout regulator whenever EXTV CC is
higher than 4.7V. See EXTV CC Connection in the Applica-
tions Information section. Do not exceed 7V on this pin
and ensure V EXTVCC ≤ V INTVCC .
V IN (Pin 32): Main Supply Pin. Should be closely de-
coupled to the IC’s signal ground pin.
PGOOD (Pin 36): Open-Drain Logic Output. PGOOD is
pulled to ground when the voltage on the EAIN pin is not
within ± 10% of its set point.
3819f
9
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