参数资料
型号: ADP1611ARMZ-R7
厂商: Analog Devices Inc
文件页数: 15/20页
文件大小: 0K
描述: IC REG BOOST ADJ 1.2A 8MSOP
标准包装: 1
类型: 升压(升压)
输出类型: 可调式
输出数: 1
输出电压: 可调至 20V
输入电压: 2.5 V ~ 5.5 V
PWM 型: 电流模式
频率 - 开关: 700kHz,1.23MHz
电流 - 输出: 1.2A
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: 8-TSSOP,8-MSOP(0.118",3.00mm 宽)
包装: 标准包装
供应商设备封装: 8-MSOP
其它名称: ADP1611ARMZ-R7DKR
ADP1611
SEPIC POWER SUPPLY
The circuit in Figure 30 shows the ADP1611 in a single-ended
primary inductance converter (SEPIC) topology. This topology
L1
4.7 μ H
is useful for an unregulated input voltage, such as a battery-
powered application in which the input voltage can vary
2.5V–5.5V
ADP1611
C1
10 μ F
3.3V
between 2.7 V to 5 V, and the regulated output voltage falls
within the input voltage range.
ON
6
3
IN
SD
SW 5
L2
4.7 μ H
R1
16.8k ?
The input and the output are dc-isolated by a coupling capaci-
tor, C1. In steady state, the average voltage of C1 is the input
voltage. When the ADP1611 switch turns on and the diode
turns off, the input voltage provides energy to L1, and C1
provides energy to L2. When the ADP1611 switch turns off and
C IN
10 μ F
C SS
22nF
7
8
RT
SS
GND
4
FB 2
COMP 1
R COMP
60k ?
C COMP
1nF
R2
10k ?
C OUT
10 μ F
the diode turns on, the energy in L1 and L2 is released to charge
the output capacitor, C OUT , and the coupling capacitor, C1, and
to supply current to the load.
Rev. 0 | Page 15 of 20
Figure 30. 3.3 V DC-to-DC Converter
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