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参数资料
| 型号： | LM2630MTC-ADJ/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, 345 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封装： | TSSOP-20 |
| 文件页数： | 7/12页 |
| 文件大小： | 681K |
| 代理商： | LM2630MTC-ADJ/NOPB |
Electrical Characteristics (Continued)
Specifications in standard type face are for T
j = 25C and those with boldface type apply over full operating junction tem-
perature range. V
IN =10V, GND = PGND = 0V,unless otherwise stated. (Notes 5, 6)
Symbol
Parameter
Conditions
Typical
Limit
Units
Reference Voltage (Load
Regulation)
0A < I
REF < 50 A
1.238
V
1.213/1.208
V(min)
1.263/1.268
V(max)
Logic Inputs and Outputs
V
IH
Minimum High Level Input
Voltage (SD, FPWM and
SYNC)
2.4
V(min)
V
IL
Maximum Low Level Input
Voltage (FPWM and SYNC)
0.8
V(max)
Maximum Low Level Input
Voltage (SD)
0.5
V(max)
Maximum Input Leakage
Curren1t (SD , FPWM and
SYNC)
Logic Input Voltage 0V or 5V
±0.1
A
V
OH
PGOOD High Level Output
Voltage
PGOOD Sourcing 50 A
2.7
V
2.4
V(min)
V
OL
PGOOD Low Level Output
Voltage
PGOOD Sinking 50 A
0
V
0.5
V(max)
Note 1: Absolute maximum ratings indicate limits beyond which damage to the device may occur. Electrical specifications do not apply when operating the device
outside of its rated operating conditions.
Note 2: The maximum allowable power dissipation is calculated by using PDmax =(TJmax -TA)/θJA , where TJmax is the maximum junction temperature, TA is the
ambient temperature, and
θJA is the junction-to-ambient thermal resistance of the specified package. The 720 mW rating results from using 160C, 70C, and
125C/W for TJmax,TA, and θJA respectively. A θJA of 125C/W represents the worst-case condition of no heat sinking of the 20-pin TSSOP. Heat sinking allows the
safe dissipation of more power. The Absolute Maximum power dissipation must be derated by 8 mW per C above 70C ambient. The LM2630 actively limits its
junction temperature to about 160C.
Note 3: For detailed information on soldering plastic small-outline packages, refer to the Packaging Databook available from National Semiconductor Corporation.
Note 4: For testing purposes, ESD was applied using the human-body model, a 100 pF capacitor discharged through a 1.5 k
resistor.
Note 5: A typical is the center of characterization data taken with TA =TJ = 25C. Typicals are not guaranteed.
Note 6: All limits are guaranteed. All electrical characteristics having room-temperature limits are tested during production with TA =TJ = 25C. All hot and cold limits
are guaranteed by correlating the electrical characteristics to process and temperature variations and applying statistical process control.
Note 7: This limit is guaranteed by design.
Note 8: Pulling 2.94 A out of FADJ pin simulates adjusting the oscillator frequency with a 350 k
resistor connected from FADJ to GND.
Typical Performance Characteristics
Efficiency vs Load Current
(FPWM = Low, V
OUT = 3.3V)
Efficiency (FPWM = High, Input Voltage = 16V,
V
OUT= 2.9V)
10012011
10012012
LM2630
www.national.com
4
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| LM2630MTCX-ADJ | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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| LM2631 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Synchronous Step-Down Power Supply Controller |
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