参数资料
型号: XC9235A33DMR-G
厂商: Torex Semiconductor Ltd
文件页数: 15/34页
文件大小: 0K
描述: IC REG BUCK SYNC 3.3V SOT25-5
标准包装: 3,000
类型: 降压(降压)
输出类型: 固定
输出数: 1
输出电压: 3.3V
输入电压: 2 V ~ 6 V
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: SC-74A,SOT-753
包装: 带卷 (TR)
供应商设备封装: SOT-25
XC9235/XC9236/XC9237
Series
■ OPERATIONAL DESCRIPTION (Continued)
< C L High Speed Discharge >
XC9235B(C)(D)(E)(F)(G)/ XC9236B(C)(D)(E)(F)(G)/ XC9237B(C)(D)(E)(F)(G) series can quickly discharge the electric
charge at the output capacitor (C L ) when a low signal to the CE pin which enables a whole IC circuit put into OFF state, is
inputted via the Nch MOS switch transistor located between the L X pin and the V SS pin. When the IC is disabled, electric
charge at the output capacitor (C L ) is quickly discharged so that it may avoid application malfunction. Discharge time of the
output capacitor (C L ) is set by the C L auto-discharge resistance (R) and the output capacitor (C L ). By setting time constant
of a C L auto-discharge resistance value [R] and an output capacitor value (C L ) as τ ( τ =C x R), discharge time of the
output voltage after discharge via the N channel transistor is calculated by the following formulas.
V = V OUT(E) x e
–t/ τ
or t= τ Ln (V OUT(E) / V)
V : Output voltage after discharge
V OUT(E) : Output voltage
t: Discharge time
τ : C x R
C= Capacitance of Output capacitor (C L )
R= C L auto-discharge resistance
Output Voltage Dischage Characteristics
Rdischg = 300Ω ( TYP )
100
90
80
70
60
50
40
30
20
10
0
CL=10uF
CL=20uF
CL=50uF
0
10
20
30
40
50
60
70
80
90
100
Discharge Time t (ms)
15/34
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