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参数资料
| 型号： | LM2633MTDX/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, 275 kHz SWITCHING FREQ-MAX, PDSO48 |
| 封装： | TSSOP-48 |
| 文件页数： | 2/40页 |
| 文件大小： | 1350K |
| 代理商： | LM2633MTDX/NOPB |
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Electrical Characteristics (Continued)
V
CC = +15V unless otherwise indicated under the Conditions column. Typicals and limits appearing in plain type apply for TA
=T
J = +25C. Limits appearing in boldface type apply over 0C to +125C.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
Gate Drive (For Channel 2 Switching Regulator Controller)
I
boot2
CBOOT Leakage
Current
V
CBOOT2 =7V
100
nA
HDRV2 Source Current
V
HDRV2 =VSW2 =0V, VCBOOT2 = 5V
tbd
A
HDRV2 Sink Current
V
HDRV2 = 5V
tbd
A
LDRV2 Source Current
V
LDRV2 = 0V
tbd
A
LDRV2 Sink Current
V
LDRV2 = 5V
tbd
A
HDRV2 FET
On-Resistance
tbd
LDRV2 FET
On-Resistance
tbd
Oscillator
F
osc
Oscillator Frequency
225
250
275
kHz
T
off_min
Minimum Off-Time
400
ns
T
on_min
Minimum On-Time
220
ns
Error Amplifier
I
fb1
Feedback Input Bias
Current, Channel 1
V
FB1 = 2.4V
55
A
I
fb2
Feedback Input Bias
Current, Channel 2
V
FB2 = 1.36V
18
nA
I
fb3
Feedback Input Bias
Current, Channel 3
V
FB3 = 1.36V
70
nA
I
comp1,
I
comp2
COMP Output Sink
Current
V
FB1 = 150% of measured 1.4V DAC,
V
FB2 = 150% of measured bandgap,
V
COMP1 =VCOMP2 =1V
60
A
V
comp_max
COMP Pin Maximum
Voltage
tbd
1.96
V
Gm
Transconductance
576
mho
DAC Output and V
FB2
V
dac
Channel 1 DAC Output
Voltage Accuracy
VCOMP1 = 1V, DAC codes from 1.3V
to 1.6V
1.5
%
VCOMP1 = 1V, DAC codes from
0.925V to 1.25V and from 1.65V to
2.00V
1.7
V
fb2
Channel 2 DC Output
Voltage Accuracy
COMP2 pin from 0.5V to 1.8V
1.217
1.238
1.259
V
Linear Regulator Controller
V
fb3
Channel 3 DC Output
Voltage Accuracy
1.215
1.24
1.265
V
g3_sk
G3 Sink Current
20
A
I
g3_sc
G3 Minimum Source
Current
20
mA
V
g3_max
G3 Maximum Voltage
3.6
V
LM2633
www.national.com
10
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