参数资料
| 型号： | AP139-35WL-7 |
| 厂商： | Diodes/Zetex |
| 文件页数： | 5/7页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 3.5V .3A SOT-25 |
| 标准包装： | 3,000 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 3.5V |
| 输入电压： | 最高 5.5V |
| 稳压器数量： | 1 |
| 电流 - 输出： | 300mA（最小值） |
| 电流 - 限制（最小）： | 300mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SC-74A，SOT-753 |
| 供应商设备封装： | SOT-25 |
| 包装： | 带卷 (TR) |
AP139
300mA LOW-NOISE CMOS LDO
Typical Performance Characteristics
Power Supply Rejection Ratio
(Continued)
Vout Vs Current Limit
0
-10
-20
BP=0
100mA
0.7
0.6
0.5
-30
-40
-50
-60
10mA
1mA
0.4
0.3
0.2
-70
0.1
-80
Vcc=5V
-90
1.0E+00
1.0E+01
1.0E+02
1.0E+03
1.0E+04
1.0E+05
1.0E+06
0
1.5
1.8
2
2.5
2.8
3
3.3
3.5
400
350
300
250
Frequency (Hz)
V c c V s S h o rt C u rre n t
Vout (V)
200
150
100
50
0
T o p to b o tto m
V o u t= 1 .5 V
V o u t= 1 .8 V
V o u t= 2 .5 V
V o u t= 3 .3 V
3 .5
4
4 .5
5
5 .5
6
V c c (V )
Functional Description
exceeds 130 C, or the current exceeds 300mA. During thermal
restored when the junction temperature drops below 110 C.
The AP139 of CMOS regulators contain a PMOS pass transistor,
voltage reference, error amplifier, over-current protection,
thermal shutdown.
The P-channel pass transistor receives data from the error
amplifier, over-current protection, and thermal protection circuits.
During normal operation, the error amplifier compares the output
voltage to a precision reference. The over-current and thermal
shutdown circuits become active when the junction temperature
o
shutdown, the output voltage remains low. Normal operation is
o
The AP139 switches from voltage mode to current mode when
the load exceeds the rated output current. This prevents
over-stress.
Enable
The enable pin normally floats high. When actively, pulled low,
the PMOS pass transistor shuts off, and all internal circuits are
powered down. In this state, the quiescent current is less than
2 μ A. This pin behaves much like an electronic switch.
External Capacitor
The AP139 is stable with a low ESR output capacitor to ground of
1.0 μ F or greater. It can keep stable even with higher ESR
capacitors. A second capacitor is recommended between the
input and ground to stabilize V IN . The input capacitor should be
larger than 0.1 μ F to have a beneficial effect. All capacitors should
be placed in close proximity to the pins. A “quiet” ground
termination is desirable.
AP139 Rev. 6
5 of 7
FEBRUARY 2009
? Diodes Incorporated
相关PDF资料 |
PDF描述 |
|---|---|
| AP139-35WL-7 | IC REG LDO 3.5V .3A SOT-25 |
| AP130-18RG-7 | IC REG LDO 1.8V .3A SC59-3 |
| AP130-18RG-7 | IC REG LDO 1.8V .3A SC59-3 |
| AP130-18WL-7 | IC REG LDO 1.8V .3A SC59-3 |
| AGM12DRMN-S664 | CONN EDGECARD 24POS .156 WW |
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