參數(shù)資料
型號(hào)： LM2633MTDX/NOPB
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 穩(wěn)壓器
英文描述： SWITCHING CONTROLLER, 275 kHz SWITCHING FREQ-MAX, PDSO48
封裝： TSSOP-48
文件頁數(shù)： 39/40頁
文件大小： 1350K
代理商： LM2633MTDX/NOPB
Absolute Maximum Ratings (Note 11)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Voltages from the indicated pins to GND/PGND:
VIN, KS1, KS2, SW1, SW2
0.3V to 31V
ILIM1, ILIM2
0.3V to 31V
VID0-VID4
0.3V to 5V
VLIN, VDD1, VDD2, PGOOD
0.3V to 6V
FB1, FB2, SENSE2, G3, FB3, OUT3
0.3V to 6V
CBOOT1
0.3V to SW1+ 7V
CBOOT2
0.3V to SW2+ 7V
ON/SS1, ON/SS2
0.3V to 5V
FPWM
0.3V to 7V
Power Dissipation (T
A = 25C),
1.56W
Junction Temperature
+150C
ESD Rating (Note 14)
2kV
Ambient Storage Temperature
Range
65C to +150C
Soldering Dwell Time, Temperature (Note 13)
Wave
Infrared
Vapor Phase
4 sec, 260C
10sec, 240C
75sec, 219C
Operating Ratings(Note 11)
VIN (VIN and VLIN5 tied
together)
4.5V to 5.5V
VIN (VIN and VLIN5 separate)
5.0V to 30V
Junction Temperature 1
0C to +125C
Junction Temperature 2
40C to +125C
VDD1, VDD2
4.5V to 5.5V
Electrical Characteristics
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
SYSTEM
V
out1_load
Channel 1 Load
Regulation (Note 17)
V
COMP1 moves from 0.5V to 1.5V,
VID4:0=01101
0mV
V
out2_load
Channel 2 Load
Regulation (Note 17)
V
COMP2 moves from 0.5V to 1.5V
1.5
mV
V
fb
Line Regulation (for the
two switching regulators)
5.0V
≤ VIN ≤ 30V, VID4:0=01101
2mV
I
vin
Input Supply Current
with the Switching
Channels ON
V
FB = 0.9V, no VLIN5 DC Current
1.5
2.4
mA
I
vin_sd
Input Supply Current
with the IC Shut Down
V
ON/SS1 =VON/SS2 =0V
10
18
A
V
vlin5
VLIN5 Output Voltage
I
VLIN5 = 0 to 25mA, 5.5V < VIN <
30V
4.7
5.0
5.3
V
I
ilim_pos
ILIM1 and ILIM2 Pins
Sink Current
8
10
12
A
V
ilim_neg
Negative Current Limit
(SWx vs PGNDx
voltage)
45
mV
I
ss_sc
Soft Start Charge
Current
0.5
2.25
5
A
I
ss_sk
Soft Start Sink Current
In UVLO or thermal shutdown
2
A
V
ss_on
Soft Start ON Threshold
1.2
V
ssto
Soft Start Timeout
Threshold
3.5
V
uvd
UV_DELAY Threshold
VLIN5 = 5V (Note 21)
2.1
V
I
delay
UV_DELAY Source
Current
1.0
5
9.0
A
I
vid
VID4:0 Internal Pull Up
Current
613
A
LM2633
www.national.com
8
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