参数资料
| 型号： | BAJ2CC0WFP-E2 |
| 厂商： | Rohm Semiconductor |
| 文件页数： | 14/23页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 12V 1A TO252-5 |
| 标准包装： | 2,000 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 12V |
| 输入电压： | 最高 25V |
| 电压 - 压降（标准）： | 0.3V @ 500mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 1A（最小值） |
| 工作温度： | -40°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： | TO-252-5 |
| 包装： | 带卷 (TR) |
BAxxDD0xx BAxxCC0xx
Datasheet
When using at temperatures over Ta=25 ℃ , please refer to the heat reducing characteristics shown in Fig.29 through 31.
The IC characteristics are closely related to the temperature at which the IC is used and if the temperature exceeds the
maximum junction temperature Tj MAX ., the elements may be damaged or destroyed. From the standpoints of instantaneous
destruction and long-term operating reliability, it is necessary give sufficient consideration to IC heat. In order to protect the
IC from thermal damage, it is necessary to operate it at temperatures lower than the maximum junction temperature Tj MAX
of the IC.
Fig.30 shows the acceptable loss and heat reducing characteristics of the TO220FP package The portion shown by the
diagonal line is the acceptable loss range that can be used with the IC alone. Even when the ambient temperature Ta is a
normal temperature (25 ℃ ), the chip (junction) temperature Tj may be quite high so please operate the IC at temperatures
less than the acceptable loss Pd.
The method of calculating the power consumption Pc (W) is as follows.
Pc = (Vcc-Vo) × Io ＋ Vcc × Icca
Acceptable loss Pd ≦ Pc
Solving this for load current I O in order to operate within the acceptable loss:
Vcc ： Input voltage
Vo ： Output voltage
Io ： Load current
Vcca ： Circuit current
Io ≦ Pd – Vcc × Icca
Vcc － Vo
(Please refer to Fig.10 and 22 for Icca.)
It is then possible to find the maximum load current Io MAX with respect to the applied voltage Vcc at the time of thermal design.
? Calculation Example
Example 1) When Ta=85 ℃ , Vcc=8.3V, Vo=3.3V, BA33DD0WT
Io ≦
1.04 － 8.3 × Icca
5
Io ≦ 200mA (Icca : 2mA)
With the IC alone : θ ja=62.5 ℃ /W → -16mW/ ℃
25 ℃ =2000mW → 85 ℃ =1040mW
Please refer to the above information and keep thermal designs within the scope of acceptable loss for all operating
temperature ranges.
The power consumption Pc of the IC when there is a short circuit (short between Vo and GND) is:
Pc=Vcc × (Icca ＋ Ishort)
*Ishort: Short circuit current
● Peripheral Circuit Considerations
? Vcc Terminal
Please attach a capacitor (greater than 0.33μF) between the Vcc and GND.
The capacitance values will differ depending on the application, so please take this into account when configuring the terminal.
? GND Terminal
Please be sure to keep the set ground and IC ground at the same potential level so that a potential difference does not
arise between them.
If a potential difference arises between the set ground and the IC ground, the preset voltage will not be outputted,
causing the system to become unstable. Therefore, please reduce the impedance by making the ground patterns as wide
as possible and by reducing the distance between the set ground and the IC ground as much as possible.
? CTL Terminal
The CTL terminal is turned ON at 2.0V and higher and OFF at 0.8V and lower within the operating power supply voltage range.
CC0xx series, the power supply and the CTL terminal in any order without problems.
● Vo Terminal
IC
OUT
22 μ F
100
10
1
0.1
Unstable operating region
Stable operating region
Unstable operating region
100
10
1
0.1
Unstable operating region
Stable operating region
Unstable operating region
0
200 400
OUTPUT
600 800
CURRENT ： lo(mA)
1000
1
1
10
OUTPUT
100
CURRENT ： lo(mA)
1000
10000
Fig.32 Output Equivalent Circuit
Fig.33 ESR-Io Characteristics
(BAxxCC0)
Fig.34 ESR vs. Io Characteristics
(BAxxDD0)
Please attach an anti-oscillation capacitor between V o and GND. The capacitance of the capacitor may significantly change
due to factors such as temperature changes, making it impossible to completely stop oscillations. Please use a tantalum
capacitor or aluminum electrolysis capacitor with favorable characteristics and small internal series resistance (ESR) even
at low temperatures. The output fluctuates regardless of whether the ESR is large or small. Please use the IC within the
stable operating region while referring to the ESR characteristics reference data shown in Fig.32 through 34. In applications
where there are sudden load fluctuations, the use of a capacitor with large capacitance is recommended.
www.rohm.com
? 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111 ? 15 ? 001
14/20
TSZ02201-0R6R0A600130-1-2
9.Aug.2013 Rev.003
相关PDF资料 |
PDF描述 |
|---|---|
| SPX2945M3-L-5-0/TR | IC REG LDO 5V .4A SOT223-3 |
| MIC5320-NDYMT TR | IC REG LDO 2.85V/1.85V 6-TMLF |
| MIC5320-LLYMT TR | IC REG LDO 2.7V .15A 6-TMLF |
| BA09CC0WFP-E2 | IC REG LDO 9V 1A TO252-5 |
| BA08CC0WFP-E2 | IC REG LDO 8V 1A TO252-5 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| BAJ2CC0WT | 功能描述:低压差稳压器 - LDO REG 1A 12V RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| BAJ2CC0WT-V5 | 功能描述:低压差稳压器 - LDO LDO REG 12V 1A 5PIN RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| BAJ2DD0T | 功能描述:低压差稳压器 - LDO LDO REG 12V 2A 3PIN RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| BAJ2DD0WHFP | 制造商:ROHM 制造商全称:Rohm 功能描述:2A Low Dropout Voltage Regulator with Shut Down Switch |
| BAJ2DD0WHFP-TR | 功能描述:低压差稳压器 - LDO LDO REGULATOR POS 2A 6-PIN RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
发布紧急采购，3分钟左右您将得到回复。