参数资料
型号: PQ20WZ5U
厂商: Sharp Microelectronics
文件页数: 2/6页
文件大小: 0K
描述: IC REG LDO ADJ .5A SC-63
标准包装: 3,000
稳压器拓扑结构: 正,可调式
输出电压: 3 V ~ 20 V
输入电压: 3.5 V ~ 24 V
稳压器数量: 1
电流 - 输出: 500mA
工作温度: -20°C ~ 80°C
安装类型: 表面贴装
封装/外壳: SC-63-5
供应商设备封装: SC-63
包装: 带卷 (TR)
其它名称: 425-1724-2
Low Power-Loss Voltage Regulators
PQ20WZ51/PQ20WZ11
I
Electrical Characteristics
(Unless otherwise specified, conditions shall be V IN =5V, Vo=3.3V, ? 4 ,R 1 =2k ? , R 2 =500 ? , Vc=2.7V, T a =25 ? C)
Parameter
Symbol Conditions
MIN.
TYP.
MAX.
Unit
Input voltage
Output voltage
Load regulation
Line regulation
Ripple rejection
Reference voltage
Temperature coefficient of Reference voltage
Dropout voltage
Quiescent current
? 7 ON-state voltage for control
ON-state current for control
OFF-state voltage for control
OFF-state current for control
Output OFF-state consumption current
V IN
Vo
R eg L
R eg I
RR
V ref
VcV ref
V i -o
I q
Vc( ON )
Ic( ON )
Vc( OFF )
Ic( OFF )
I qs
––
––
? 5
V IN =4 to 10V, Io=5mA
Refer to Fig. 2
? 4
T j =0 to 125 ? C, Io=5mA
? 4, 6
Io=0A
––
––
Io=0A
Io=0A, Vc=0.4V
Io=0A, Vc=0.4V
3.5
3.0
––
––
45
2.574
––
––
––
2.0
––
––
––
––
––
––
––
––
60
2.64
± 1.0
––
––
––
––
––
––
––
24
20
2.0
2.5
––
2.706
––
0.5
8
––
200
0.8
2.0
5.0
V
V
%
%
dB
V
%
V
mA
V
μ A
V
μ A
μ A
? 4
? 5
PQ20WZ51 :Io=0.3A, PQ20WZ11 :Io=0.5A
PQ20WZ51 :Io=5mA to 0.5A, PQ20WZ11 :Io=5mA to 1.0A
? 6 Input voltage shall be the value when output voltage is 95% in comparison with the initial value.
? 7
In case of opening control terminal 2 , output voltage turns off.
Fig. 1 Test Circuit
Fig. 2 Test Circuit for Ripple Rejection
V IN
0.33 μ F
1
3
47 μ F
V O
0.33 μ F
1
3
V C
2
5
4
R 2
V ref
+
A
I O
V
ei
2
5
4
R 2
47 μ F
+
I O
V eo
A
I C
A
I q 2k ?
R 1 V
R L
V IN
V C
R 1
2k ?
R L
2.7V
V O =V ref ? 1+ –––––
R 2
R 1
[R 1 =2k ? ,Vref Nearly =2.64V]
Fig. 3 Power Dissipation vs. Ambient
Temperature
f=120Hz(sine wave)
e i(rms) =0.5V
I O =0.3A
RR=20 log(e i(rms) /e o(rms) )
V IN =5V
V O =3.3V(R 1 =2k ? )
Fig. 4 Overcurrent Protection
Characteristics (Typical Value)
10
8
P D
P D :With infinite heat sink
4
3
(PQ20WZ51)
V O =3.3V
V i – O =0.5V
V i – O =1V
5
2
V i – O =2V
V i – O =3V
1
0
– 20
0
50
80 100 150
0
0
0.5 1.0 1.5
2.0
Ambient temperature T a ( ? C)
Note) Oblique line portion : Overheat protection may operate in this area.
Output current I O (A)
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