参数资料
型号: LM10506TME
厂商: NATIONAL SEMICONDUCTOR CORP
元件分类: 电源管理
英文描述: 1-CHANNEL POWER SUPPLY SUPPORT CKT, PBGA34
封装: 0.40 MM PITCH, MICRO SMD-34
文件页数: 32/34页
文件大小: 1020K
代理商: LM10506TME
13.0 Buck 1 Electrical Characteristics (Note 3, Note 4, Note 6) Unless otherwise noted, V
IN = 5.0V
where: V
IN=VIN_B1 = VIN_B2 = VIN_B3. Limits appearing in normal type apply for TJ = 25°C. Limits appearing in boldface type apply
over the entire operating junction temperature range of 40°C
T
A = TJ +85°C.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
I
Q
DC Bias Current in V
IN
No Load, PFM Mode
15
50
A
I
PEAK
Peak switching current limit
Buck 1 enabled, switching in PWM
1.6
1.8
2.1
A
η
Efficiency peak, Buck 1 (Note
I
OUT = 0.3A
90
%
F
SW
Switching Frequency
1.75
2
2.3
MHz
C
IN
Input Capacitor (Note 2)
0mA
I
OUT 1.3A
4.7
F
C
OUT
Output Filter Capacitor (Note 2)
10
100
Output Capacitor ESR (Note 2)
20
m
L
Output Filter Inductance (Note
2.2
H
ΔVOUT
DC Line regulation (Note 2)
3.3V
V
IN 5.0V, IOUT = 1.3A
0.5
%/V
DC Load regulation (Note 2)
0.13A
I
OUT 1.3A
0.3
%/A
I
FB
Feedback pin input bias current VFB = 3.0V
2.1
5
A
R
DS-ON-HS
High Side Switch On Resistance
135
m
V
IN = 2.6V
215
R
DS-ON-LS
Low Side Switch On Resistance
85
190
m
R
DS-ON_BYPASS
Bypass FET On Resistance
Used in parallel with the high side FET
while in Bypass mode. Resistance
(DCR) of inductor = 100 m
V
IN = 3.3V
85
m
V
IN = 2.6V
120
STARTUP
T
START
Internal soft-start (turn on time)
Startup from shutdown, V
OUT = 0V, no
load, LC = recommended circuit, using
software enable, to V
OUT = 95% of final
value
0.1
ms
7
www.national.com
LM10506
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