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参数资料
| 型号： | LM27262MTDX/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, 345 kHz SWITCHING FREQ-MAX, PDSO48 |
| 封装： | TSSOP-48 |
| 文件页数： | 19/22页 |
| 文件大小： | 1105K |
| 代理商： | LM27262MTDX/NOPB |
Absolute Maximum Ratings (Notes 1, 4)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
V
CC5V
-0.3V to 7V
PHASES, IREF, VSTDOS,
VPROG,
SLADJ1, SLADJ2, VREF,
REFINT,
CLIMADJ, VCORE, COMP,
VFB,
VILx, VIHx, SOFTCAP,
PWRGD,
VIDPGD, VID0-VID5,
VRON
-0.3V to V
CC5V + 0.3V
Differential Voltage (VILx –
VIHx)
1V
Ambient Storage Temp.
Range
-65C to +150C
Junction Temperature
-20C to +150C
Minimum ESD Rating
Human Body Model
Machine Model
±2kV
100pF
1.5 k
Soldering Dwell Time,
Temperature (Note 3)
Wave
Infrared
Vapor Phase
4sec, 260C
10sec, 240C
75sec, 219C
Operating Ratings (Note 1)
V
CC5V
4.65V to 5.5V
Junction Temperature
0C to +110C
Electrical Characteristics (Note 5),(Note 6) V
CC5V = 5V unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
I
Q5V
Quiescent V
CC5V
current
V
CC5V = 5.5V, not switching
8.4
10.5
mA
I
Q5V
Quiescent V
CC5V
current
V
CC5V = 5.5V, 4-phase switching
8.5
11
mA
I
SD5V
Shutdown V
CC5V
current
V
CC5V = 5.5V, VRON = Low
0.1
10
A
T
SD
Thermal Shutdown
Threshold
Rising temperature
165
C
T
SDH
Thermal Shutdown
Threshold Hysteresis
10
C
UNDER VOLTAGE LOCKOUT
V
5UVLO
VCC5V UVLO
THreshold
Rising Edge
4.15
4.3
4.6
V
Falling Edge
3.85
4.05
4.35
V
5UVLOH
VCC5V UVLO
Hysteresis
0.25
V
DAC: VID0-5, VDAC
VID0-5 Inputs Logic
LOW
0.4
V
VID0-5 Inputs Logic
HIGH
0.8
V
VID0-5 Low-to-High
Threshold
0.7
V
VID0-5 Threshold
Hysteresis
0.2
V
VID0-5 Inputs Internal
Pull-up Current
VID0-5 = Low
5
20
A
DAC Output Voltage
Programming
Resolution
Per VID code table, Measured at VPROG
12.5
mV
DAC Accuracy measured at VPROG pin over
-5C < T
J < 110C
LM27262
www.national.com
6
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