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参数资料
| 型号： | LM3207TL/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 1.2 A SWITCHING REGULATOR, 2300 kHz SWITCHING FREQ-MAX, PBGA9 |
| 封装： | ROHS COMPLIANT, MICRO SMD, 9 PIN |
| 文件页数： | 21/24页 |
| 文件大小： | 1601K |
| 代理商： | LM3207TL/NOPB |
Note 4:
In applications where high power dissipation and/or poor package thermal resistance is present, the maximum ambient temperature may have to be de-
rated. Maximum ambient temperature (T
A-MAX) is dependent on the maximum operating junction temperature (TJ-MAX-OP = 125°C), the maximum power dissipation
of the device in the application (P
D-MAX), and the junction-to ambient thermal resistance of the part/package in the application (θJA), as given by the following
equation: T
A-MAX = TJ-MAX-OP – (θJA × PD-MAX).
Note 5:
Junction-to-ambient thermal resistance (
θ
JA) is taken from thermal measurements, performed under the conditions and guidelines set forth in the JEDEC
standard JESD51-7.
Note 6:
Min and Max limits are guaranteed by design, test, or statistical analysis. Typical numbers are not guaranteed, but do represent the most likely norm.
Due to the pulsed nature of the testing T
A = TJ for the electrical characteristics table.
Note 7:
The parameters in the electrical characteristics table are tested under open loop conditions at PV
IN = 3.6V. For performance over the input voltage range
and closed loop results refer to the datasheet curves.
Note 8:
Shutdown current includes leakage current of PFET.
Note 9:
I
Q specified here is when the part is operating at 100% duty cycle.
Note 10:
Current limit is built-in, fixed, and not adjustable. Refer to datasheet curves for closed loop data and its variation with regards to supply voltage and
temperature. Electrical Characteristic table reflects open loop data (FB = 0V and current drawn from SW pin ramped up until cycle by cycle limit is activated).
Closed loop current limit is the peak inductor current measured in the application circuit by increasing output current until output voltage drops by 10%.
Note 11:
Ripple voltage should measured at C
OUT electrode on good layout PC board and under condition using suggested inductors and capacitors.
Note 12:
Transient Pull-up current (I
PUT) and Transient Pull-down Current (IPDT) will be tested which are inversely proportional to charge and discharge times
t
LDO, ON and tLDO, OFF respectively.
Note 13:
Dropout voltage is the voltage difference between the input and the output at which the output voltage drops to 100 mV below its nominal value.
Typical Performance Characteristics (Circuit in Figure 3, See Operation Description Section),
PV
IN = EN = 3.6V, L = 3.0H, (DCR = 0.12, FDK MIPW3226D3R0M); CIN = 10F, (6.3V, 0805, TDK C2012X5R0J106K); COUT
= 4.7F, (6.3V, 0603, TDK C1608X5R0J475M), C
LDO = 100nF, 10V, (0402, TDK C1005X5R1A104KT) (or 220nF, (6.3V, 0402,
TDK C1005X5R0J224KT)) can be used. T
A = 25°C unless otherwise specified.
LDO Typical Performance Curves (2.875 Option)
LDO Voltage vs Load Current
(C
LDO = 100nF)
20165378
LDO Dropout Voltage vs Load Current
(C
LDO = 100nF),
(Note 13)
20165330
www.national.com
6
LM3207
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相关代理商/技术参数 |
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|---|---|
| LM3207TLX | 制造商:NSC 制造商全称:National Semiconductor 功能描述:650mA Miniature, Adjustable, Step-Down DC-DC Converter for RF Power Amplifiers with Integrated Vref LDO |
| LM3207TLX/NOPB | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| LM3207TLX-2.53 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:650mA Miniature, Adjustable, Step-Down DC-DC Converter for RF Power Amplifiers with Integrated Vref LDO |
| LM3207TLX-2.53/NOPB | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| LM3208 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:650mA Miniature, Adjustable, Step-Down DC-DC Converter for RF Power Amplifiers |
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