参数资料
型号: MCP16301T-I/CHY
厂商: Microchip Technology
文件页数: 9/38页
文件大小: 0K
描述: IC REG BUCK ADJ 0.6A SOT23-6
标准包装: 1
类型: 降压(降压)
输出类型: 可调式
输出数: 1
输出电压: 2 V ~ 15 V
输入电压: 4 V ~ 30 V
PWM 型: 电流模式
频率 - 开关: 500kHz
电流 - 输出: 600mA
同步整流器:
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: SOT-23-6
包装: 标准包装
供应商设备封装: SOT-23-6
其它名称: MCP16301T-I/CHYDKR
MCP16301
3.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 3-1 .
TABLE 3-1:
PIN FUNCTION TABLE
MCP16301
SOT-23
1
2
3
4
5
6
Symbol
BOOST
GND
V FB
EN
V IN
SW
Description
Boost voltage that drives the internal NMOS control switch. A bootstrap capacitor is
connected between the BOOST and SW pins.
Ground Pin
Output voltage feedback pin. Connect V FB to an external resistor divider to set the
output voltage.
Enable pin. Logic high enables the operation. Do not allow this pin to float.
Input supply voltage pin for power and internal biasing.
Output switch node, connects to the inductor, freewheeling diode and the bootstrap
capacitor.
3.1
Boost Pin (BOOST)
3.5
Power Supply Input Voltage Pin
The high side of the floating supply used to turn the
integrated N-Channel MOSFET on and off is
connected to the boost pin.
(V IN )
Connect the input voltage source to V IN . The input
source should be decoupled to GND with a
4.7 μF - 20 μF capacitor, depending on the impedance
3.2
Ground Pin (GND)
of the source and output current. The input capacitor
provides AC current for the power switch and a stable
The ground or return pin is used for circuit ground
connection. The length of the trace from the input cap
return, output cap return and GND pin should be made
as short as possible to minimize the noise on the GND
voltage source for the internal device power. This
capacitor should be connected as close as possible to
the V IN and GND pins. For lighter load applications, a
1 μF X7R or X5R ceramic capacitor can be used.
pin.
3.6
Switch Pin (SW)
3.3
Feedback Voltage Pin (V FB )
The switch node pin is connected internally to the
The V FB pin is used to provide output voltage regulation
by using a resistor divider. The V FB voltage will be
0.800V typical with the output voltage in regulation.
N-channel switch, and externally to the SW node
consisting of the inductor and Schottky diode. The SW
node can rise very fast as a result of the internal switch
turning on. The external Schottky diode should be
3.4
Enable Pin (EN)
connected close to the SW node and GND.
The EN pin is a logic-level input used to enable or
disable the device switching, and lower the quiescent
current while disabled. A logic high (> 1.4V) will enable
the regulator output. A logic low (<0.4V) will ensure that
the regulator is disabled.
? 2011 Microchip Technology Inc.
DS25004A-page 9
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