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参数资料
| 型号： | LM3431SDX |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, 1100 kHz SWITCHING FREQ-MAX, QCC28 |
| 封装： | LLP-28 |
| 文件页数： | 21/24页 |
| 文件大小： | 549K |
| 代理商： | LM3431SDX |
Note 1:
Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which operation of the
device is intended to be functional. For guaranteed specifications and test conditions, see the Electrical Characteristics.
Note 2:
The human body model is a 100pF capacitor discharged through a 1.5 k
resistor into each pin.
Note 3:
The Thermal Resistance specifications are based on a JEDEC standard 4-layer pcb.
θ
JA will vary with board size and copper area.
Note 4:
The maximum allowable power dissipation is a function of the maximum junction temperature, T
J_MAX, the junction-to-ambient thermal resistance, θJA,
and the ambient temperature, T
A. The maximum allowable power dissipation at any ambient temperature is calculated using: PD_MAX = (TJ_MAX – TA)/θJA. The
maximum power dissipation is determined using T
A = 25°C, and TJ_MAX = 125°C.
Note 5:
All room temperature limits are 100% production tested. All limits at temperature extremes are guaranteed through correlation using standard Statistical
Quality Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL).
Note 6:
IQ specifies the current into the VIN pin and applies to non-switching operation.
Note 7:
V
OS_DELTA specifies the maximum absolute difference between the offset of any pair of SNS amplifiers.
Note 8:
The minimum DIM pulse width is an internal signal. Any pulse width may be applied to the DIM pin or generated via analog dimming mode. A pulse width
less than 0.4 s will be internally extended to 0.4 s.
www.national.com
6
LM3431
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