參數(shù)資料
型號： LM2651MTCX-ADJ
英文描述： Current-Mode SMPS Controller
中文描述： 電流模式開關(guān)電源控制器
文件頁數(shù)： 9/11頁
文件大?。?/td> 215K
代理商： LM2651MTCX-ADJ
Application Circuits
(Continued)
TABLE 1. Components for the Typical 90 kHz Application Circuit
Input Voltage
Applicable Cell Stacks
7V to 18V IN
8 to 12 Cell NiCd or NiMh, 3 to 4 Cell Li Ion, 8 to 11 Cell Alkaline, 6 Cell
Lead Acid
5V, 3A Out
2 x 22 μF, 35V AVX TPS
Series or Sprague 593D Series
40μH (See Table 2)
3x220 μF, 10V AVX TPS
Series or Sprague 593D Series
R1 = 75k
, 1%,
R2 = 24.9k
, 1%,
R
C
= 37.4 k
,
C
C
= 4.7 nF,
R
3
= 3.57 k
,
C
10
= 5.6 nF
R
SIA
= 33 k
,
R
SOA
= 200 k
Output
3.3V, 3A out
2 x 22 μF, 35V AVX TPS
Series or Sprague 593D Series
33μH (See Table 2)
3x220 μF, 10V AVX TPS
Series or Sprague 593D Series
R1 = 41.2k
, 1%,
R2 = 24.9k
, 1%,
R
C
= 23.2 k
,
C
C
= 8.2 nF,
R
3
= 2.0 k
,
C
10
= 10 nF
R
SIA
= 39 k
,
R
SOA
= 130 k
Input Capacitor C
IN
Inductor L1
Output Capacitor C
OUT
Feedback Resistors R1
and R2
Compensation
Components R
C
, C
C
, R
3
,
and C
10
Sleep Resistors R
SIA
and R
SOA
TABLE 2. Toroidal Inductors Using Cores from MICROMETALS, INC.
Core
Number
T38
T38
T50
T50 (B)
Core
Material
52
52
52
18
Wire
Gauge
AWG
#
23
AWG
#
23
AWG
#
21
AWG
#
21
Number of
Strands
1
1
1
1
Number of
Turns
21
25
41
41
15μH
20μH
33μH
40μH
MICROMETALS
5615 E. La Palma Ave. Anaheim, CA 92807 USA (800) 356-5977
TABLE 3. Components for Typical 200 kHz Applications
Input Voltage
Applicable Cell Stacks
7V to 18V IN
8 to 12 Cell NiCd or NiMh, 3 to 4 Cell Li Ion, 8 to 11 Cell Alkaline, 6 Cell
Lead Acid
5V, 3A Out
2 x 22 μF, 35V AVX TPS
Series or Sprague 593D Series
20μH (See Table 2)
3x220 μF, 10V AVX TPS
Series or Sprague 593D Series
R1 = 75k
, 1%,
R2 = 24.9k
, 1%,
R
C
= 53.6 k
,
C
C
= 2.7 nF,
R
3
= 4.02 k
,
C
10
= 4.7 nF
R
SIA
= 33 k
,
R
SOA
= 200 k
R
FA
= 24.9 k
Output
3.3V, 3A out
2 x 22 μF, 35V AVX TPS
Series or Sprague 593D Series
15μH (See Table 2)
3x220 μF, 10V AVX TPS
Series or Sprague 593D Series
R1 = 41.2k
, 1%,
R2 = 24.9k
, 1%,
R
C
= 33.2 k
,
C
C
= 3.9 nF,
R
3
= 3.01 k
,
C
10
= 6.8 nF
R
SIA
= 47 k
,
R
SOA
= 91 k
R
FA
= 24.9 k
Input Capacitor C
IN
Inductor L1
Output Capacitor C
OUT
Feedback Resistors R1
and R2
Compensation
Components R
C
, C
C
, R
3
,
and C
10
Sleep Resistors R
SIA
and R
SOA
Frequency Adjusting
Resistor R
FA
L
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