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参数资料
| 型号： | LM2636MTC/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, 2000 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封装： | PLASTIC, TSSOP-20 |
| 文件页数： | 10/15页 |
| 文件大小： | 766K |
| 代理商： | LM2636MTC/NOPB |
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
(All voltages are referenced to the PGND and SGND
pins.)
V
CC
7V
BOOTV
18V
Junction Temperature
150C
DC Power Dissipation (Note 2)
1.42W
Storage Temperature
65C to +150C
Soldering Time, Temperature
Wave (4 seconds)
Infrared (10 seconds)
Vapor Phase (75 seconds)
260C
240C
219C
ESD Susceptibility (Note 3)
2 kV
Recommended Operating
Conditions (Note 1)
Supply Voltage Range (V
CC)
4.5V to 5.5V
Junction Temperature Range
0C to +125C
Electrical Characteristics
V
CC = 5V 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 +70C.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
V
BOOTV
FET Driver Supply
Voltage
18
V
DACOUT
5-Bit DAC Output
Voltage
VID4:0=01111
1.284
1.304
1.324
V
VID4:0=01101
1.385
1.406
1.427
VID4:0=01011
1.483
1.506
1.529
VID4:0=01001
1.585
1.609
1.633
VID4:0=00111
1.683
1.709
1.735
VID4:0=00101
1.784
1.811
1.838
VID4:0=00001
1.983
2.013
2.043
VID4:0=11101
2.173
2.206
2.239
VID4:0=11010
2.471
2.509
2.547
VID4:0=10111
2.768
2.81
2.852
V
OUT
DC Load Regulation
I
OUT=0 to 14A Figure 2
5
mV
DC Line Regulation
V
IN=4.75V to 5.25V Figure 2
1
G
EA
Error Amplifier DC Gain
85
dB
SR
EA
Error Amplifier Slew
Rate
6
V/s
BW
EA
Error Amplifier Unity
Gain Bandwidth
5
MHz
I
Q_VCC
Operating V
CC Current
OUTEN=V
CC=5V, VID=10111
1.5
2.5
4
mA
Shutdown V
CC Current
OUTEN Floating, VID0:4 Floating
1
1.5
3
I
Q_BOOTV
BOOTV Pin Quiescent
Current
BOOTV=12V, OUTEN=0, VID0:4
Floating
4A
D
MAX
Maximum Duty Cycle
90
%
D
MIN
Minimum Duty Cycle
0
%
R
SENSE
SENSE Pin Resistance
to Ground
7
11.5
16
k
R
DS_SRC
FET Driver Drain-Source
ON Resistance when
Sourcing Current
BOOTV=5V
7
R
DS_SINK
FET Driver Drain-Source
ON Resistance when
Sinking Current
(Independent of BOOTV Voltage)
1.7
f
OSC
Oscillator Frequency
R
FA =84k
250
300
350
kHz
R
FA =22k
1000
R
FA = 10.5 k
2000
I
MAX
IMAX Pin Sink Current
V
IMAX = 5V, VIFB = 6V, VCC =5V
130
180
230
A
LM2636
www.national.com
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