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| 型号： | CS5203A-3GT3 |
| 厂商： | ON Semiconductor |
| 文件页数： | 5/10页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 3.3V 3A TO220AB |
| 产品变化通告： | Product Obsolescence 01/Apr/2004 |
| 标准包装： | 50 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 3.3V |
| 输入电压： | 最高 17V |
| 电压 - 压降（标准）： | 1.05V @ 3A |
| 稳压器数量： | 1 |
| 电流 - 输出： | 3A |
| 电流 - 限制（最小）： | 3.2A |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 通孔 |
| 封装/外壳： | TO-220-3 |
| 供应商设备封装： | TO-220AB |
| 包装： | 管件 |
| 其它名称： | CS5203A-3GT3OS |
CS5203A?1, CS5203A?2, CS5203A?3, CS5203A?5
100
90
80
70
60
50
40
30
20
10
T CASE = 25 ° C
I OUT = 3.0 A
(V IN ? V OUT ) = 3.0 V
V RIPPLE = 1.6 V PP
C Adj = 25 m F
0
10 1
10 2
10 3
10 4
10 5
Frequency (Hz)
Figure 9. Ripple Rejection vs. Frequency
(Adjustable Versions)
APPLICATIONS INFORMATION
The CS5203A family of linear regulators provides fixed
or adjustable voltages at currents up to 3.0 A. The regulators
V IN
V IN
V OUT
V OUT
are protected against short circuit, and include thermal
shutdown and safe area protection (SOA) circuitry. The
SOA protection circuitry decreases the maximum available
output current as the input?output differential voltage
C 1
CS5203A?1
Adj
V REF
R 1
C 2
increases.
The CS5203A has a composite PNP?NPN output
transistor and requires an output capacitor for stability. A
I Adj
detailed procedure for selecting this capacitor is included in
the Stability Considerations section.
C Adj
R 2
VOUT + VREF R1 ) R2 ) I Adj R2
Adjustable Operation
The adjustable regulator (CS5203A?1) has an output
voltage range of 1.25 V to 13 V. An external resistor divider
sets the output voltage as shown in Figure 10. The regulator
maintains a fixed 1.25 V (typical) reference between the
output pin and the adjust pin.
A resistor divider network R1 and R2 causes a fixed
current to flow to ground. This current creates a voltage
across R2 that adds to the 1.25 V across R1 and sets the
overall output voltage. The adjust pin current (typically
50 m A) also flows through R2 and adds a small error that
should be taken into account if precise adjustment of V OUT
is necessary.
The output voltage is set according to the formula:
R1
The term I Adj × R2 represents the error added by the adjust
pin current.
R1 is chosen so that the minimum load current is at least
10 mA. R1 and R2 should be the same type, e.g. metal film
for best tracking over temperature. The adjust pin is
bypassed to improve the transient response and ripple
Figure 10. Resistor Divider Scheme for the
Adjustable Version
Stability Considerations
The output or compensation capacitor helps determine
three main characteristics of a linear regulator: satrtup delay,
load transient response and loop stability.
The capacitor value and type is based on cost, availability,
size and temperature constraints. A tantalum or aluminum
electrolytic capacitor is best, since a film or ceramic
capacitor with almost zero ESR, can cause instability. The
aluminum electrolytic capacitor is the least expensive
solution. However, when the circuit operates at low
temperatures, both the value and ESR of the capacitor will
vary considerably. The capacitor manufacturers data sheet
provides this information.
A 22 m F tantalum capacitor will work for most
applications, but with high current regulators such as the
CS5203A the transient response and stability improve with
higher values of capacitor. The majority of applications for
this regulator involve large changes in load current so the
output capacitor must supply the instantaneous load current.
rejection of the regulator.
http://onsemi.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| CS-5203A-3T3 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Positive Fixed Voltage Regulator |
| CS5203A-5 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:3.0 A Adjustable, and Fixed 1.5 V, 3.3 V and 5.0 V Linear Regulators |
| CS5203A-5GT3 | 功能描述:IC REG LDO 5V 3A TO220AB RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:3,000 系列:- 稳压器拓扑结构:正，固定式和可调式 输出电压:3.3V，1.25 V ~ 5.7 V 输入电压:4.5 V ~ 7 V 电压 - 压降（标准）:1.1V @ 1A 稳压器数量:2 电流 - 输出:1A 电流 - 限制（最小）:1A 工作温度:0°C ~ 125°C 安装类型:表面贴装 封装/外壳:TO-252-5，DPak（4 引线 + 接片），TO-252AD 供应商设备封装:PPAK 包装:管件 其它名称:497-3576-5 |
| CS-5203A-5T3 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Positive Fixed Voltage Regulator |
| CS5203A-HGZ | 功能描述:差分放大器 High temp ceramic Geophone amp RoHS:否 制造商:Texas Instruments 通道数量:1 Channel 带宽:2.4 GHz 可用增益调整:6 dB to 26 dB 输入补偿电压: 共模抑制比（最小值）:- 40 dB 工作电源电压:4.75 V to 5.25 V 电源电流:100 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:WQFN-24 封装:Reel |
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