Datasheet > CS8120YDPR5

CS8120YDPR5

更新时间： 2024-02-02 10:28:46

品牌	Logo	应用领域
樱桃 - CHERRY		稳压器
页数	文件大小	规格书
8页	202K
描述
5V, 300mA Linear Regulator with and ENABLE RESET

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中文翻译

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技术参数
数据手册

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CS8120YDPR5 技术参数

是否Rohs认证：	不符合	生命周期：	Transferred
包装说明：	D2PAK-5	Reach Compliance Code：	unknown
风险等级：	5.91	可调性：	FIXED
最大回动电压 1：	1.5 V	标称回动电压 1：	1 V
最大绝对输入电压：	26 V	最大输入电压：	26 V
最小输入电压：	7 V	JESD-30 代码：	R-PSSO-G5
JESD-609代码：	e0	最大电网调整率：	0.05%
最大负载调整率：	0.05%	功能数量：	1
输出次数：	1	端子数量：	5
工作温度TJ-Max：	150 °C	工作温度TJ-Min：	-40 °C
最高工作温度：	125 °C	最低工作温度：	-40 °C
最大输出电流 1：	0.3 A	最大输出电压 1：	5.2 V
最小输出电压 1：	4.8 V	标称输出电压 1：	5 V
封装主体材料：	PLASTIC/EPOXY	封装等效代码：	SMSIP5H,.6,67TB
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
包装方法：	TAPE AND REEL	认证状态：	Not Qualified
调节器类型：	FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR	子类别：	Other Regulators
表面贴装：	YES	技术：	BIPOLAR
端子面层：	Tin/Lead (Sn/Pb)	端子形式：	GULL WING
端子节距：	1.7 mm	端子位置：	SINGLE
最大电压容差：	4%

CS8120YDPR5 数据手册

Application Notes

V_IN

V_OUT

BAT

0.1mF

500kW

RST

CS–8120

22mF

RESET

ENABLE

RESET

Gnd

I/O Port

RST

100kW

500kW

SWITCH

Figure 5: Microprocessor Control of CS8120 using an external switching transistor (Q

The I/O port of the microprocessor typically provides

50µA to Q1. In automotive applications the SWITCH is

connected to the ignition switch.

Step 3: Increase the ESR of the capacitor from zero using

the decade box and vary the load current until oscillations

appear. Record the values of load current and ESR that

cause the greatest oscillation. This represents the worst

case load conditions for the regulator at low temperature.

Stability Considerations

Step 4: Maintain the worst case load conditions set in

step 3 and vary the input voltage until the oscillations

increase. This point represents the worst case input volt-

age conditions.

The output or compensation capacitor, C₂, helps deter-

mine three main characteristics of a linear regulator: start-

up delay, load transient response and loop stability.

The capacitor value and type should be 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 instabil-

ity. The aluminum electrolytic capacitor is the least expen-

sive solution, but, if the circuit operates at low tempera-

tures (-25¡C to -40¡C), both the value and ESR of the

capacitor will vary considerably. The capacitor manufac-

turers data sheet usually provides this information.

Step 5: If the capacitor is adequate, repeat steps 3 and 4

with the next smaller valued capacitor. A smaller capaci-

tor will usually cost less and occupy less board space. If

the output oscillates within the range of expected operat-

ing conditions, repeat steps 3 and 4 with the next larger

standard capacitor value.

Step 6: Test the load transient response by switching in

various loads at several frequencies to simulate its real

working environment. Vary the ESR to reduce ringing.

The value for the output capacitor C₂shown in Figure 6

should work for most applications, however it is not nec-

essarily the optimized solution.

Step 7: Remove the unit from the environmental chamber

and heat the IC with a heat gun. Vary the load current as

instructed in step 5 to test for any oscillations.

To determine an acceptable value for C₂for a particular

application, start with a tantalum capacitor of the recom-

mended value and work towards a less expensive alterna-

tive part.

Once the minimum capacitor value with the maximum

ESR is found, a safety factor should be added to allow for

the tolerance of the capacitor and any variations in regula-

tor performance. Most good quality aluminum electrolytic

capacitors have a tolerance of ± 20% so the minimum

value found should be increased by at least 50% to allow

for this tolerance plus the variation which will occur at

low temperatures. The ESR of the capacitor should be less

than 50% of the maximum allowable ESR found in step 3

above.

Step 1: Place the completed circuit with a tantalum

capacitor of the recommended value in an environmental

chamber at the lowest specified operating temperature

and monitor the outputs with an oscilloscope. A decade

box connected in series with the capacitor will simulate

the higher ESR of an aluminum capacitor. Leave the

decade box outside the chamber, the small resistance

added by the longer leads is negligible.

Step 2: With the input voltage at its maximum value,

increase the load current slowly from zero to full load

while observing the output for any oscillations. If no oscil-

lations are observed, the capacitor is large enough to

ensure a stable design under steady state conditions.

1...3 4 567 8

中文翻译

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与CS8120YDPR5相关器件

型号	品牌	获取价格	描述	数据表
CS8120YDR14	CHERRY	获取价格	5V, 300mA Linear Regulator with and ENABLE RESET
CS8120YDR14	ONSEMI	获取价格	5.0 V, 300 mA Linear Regulator with RESET and ENABLE
CS8120YN5	CHERRY	获取价格	Fixed Positive Standard Regulator, 5VPDIP8, 0.300 INCH, PLASTIC, DIP-8
CS8120YN8	CHERRY	获取价格	5V, 300mA Linear Regulator with and ENABLE RESET
CS8120YN8	ONSEMI	获取价格	5.0 V, 300 mA Linear Regulator with RESET and ENABLE
CS8120YT5	ONSEMI	获取价格	5.0 V, 300 mA Linear Regulator with RESET and ENABLE
CS8120YT5	CHERRY	获取价格	5V, 300mA Linear Regulator with and ENABLE RESET
CS8120YTHA5	CHERRY	获取价格	5V, 300mA Linear Regulator with and ENABLE RESET
CS8120YTHA5	ONSEMI	获取价格	5.0 V, 300 mA Linear Regulator with RESET and ENABLE
CS8120YTVA5	CHERRY	获取价格	5V, 300mA Linear Regulator with and ENABLE RESET

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