参数资料
型号: NCP1522BSNT1G
厂商: ON Semiconductor
文件页数: 12/14页
文件大小: 0K
描述: IC REG BUCK SYNC ADJ 0.6A 5TSOP
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: 0.9 V ~ 3.3 V
输入电压: 2.7 V ~ 5.5 V
PWM 型: 电压模式
频率 - 开关: 3MHz
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: 6-TSOP(0.059",1.50mm 宽)5 引线
包装: 标准包装
供应商设备封装: 5-TSOP
其它名称: NCP1522BSNT1GOSDKR
NCP1522B
D VOUT + D IL
) ESR
1
Output Capacitor Selection
Selecting the proper output capacitor is based on the
desired output ripple voltage. Ceramic capacitors with low
ESR values will have the lowest output ripple voltage and
are strongly recommended. The output capacitor requires
an X7R dielectric.
The output ripple voltage in PWM mode is given by:
(eq. 6)
4 fSW COUT
? D V OUT : Output Voltage Ripple in PWM Mode
? D I L: Peak to Peak Inductor Ripple Current
? f SW : Switching Frequency
? C OUT : Output Capacitor
? ESR: Output Capacitor Serial Resistor
Table 4. LIST OF OUTPUT CAPACITORS
GRM188R60J475KE
4.7 m F
GRM21BR71C475KA
Murata
GRM188R60OJ106ME
10 m F
GRM21BR60J106ME19L
JMK212BY475MG 4.7 m F
Taiyo Yuden
JMK212BJ106MG 10 m F
C2012X5ROJ475KB
4.7 m F
TDK C1632X5ROJR75KT
C2012X5ROJ106K 10 m F
Feed ? Forward Capacitor Selection
The feed ? forward capacitor sets the feedback loop
response and is critical to obtain good loop stability.
Given that the compensation is internally fixed, an 18 pF
or higher ceramic capacitor is needed. Choose a small
ceramic capacitor X7R dielectric.
http://onsemi.com
12
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