LM2640MTC-ADJ National Semiconductor, LM2640MTC-ADJ Datasheet - Page 5

• Manufacturer Part Number: LM2640MTC-ADJ
• Description: Dual Adjustable Step-Down Switching Power Supply Controller
• Manufacturer: National Semiconductor

System
V
V
I
I
V
V
IN
SS1
Typicals and limits appearing in regular type apply for T
tion temperature range for operation, 0 to +125˚C. Unless otherwise specified under the Parameter or Conditions columns, V
= 10V, and V
V
V
IN
OUT
PCL
NCL
Electrical Characteristics
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
OUT
OUT
IN, SW1, and SW2
FB1 and FB2
SD, ON/OFF1, ON/OFF2,
LIN
CSH1, CSH2, and CSL2
Voltage from CBOOT1 to SW1
Voltage from HDRV1 to SW1
Voltage from CBOOT1 to
HDRV1 and from CBOOT2
Symbol
, I
2NDFB/FPWM, SYNC, REF,
SS1, SS2, COMP1,
COMP2 and CSL1
and from CBOOT2 to SW2
and from HDRV2 to SW2
HDRV2
SS2
/V
/ V
OUT
IN
SD
= V
Input Supply Voltage Range
Output Voltage Adjustment
Range
Load Regulation
Line Regulation
Input Supply Current
Soft-Start Source Current
Soft-Start Sink Current
Positive Current Limit
Voltage (Voltage from CSH1
to CSL1 and from CSH2 to
CSL2)
Negative Current Limit
Voltage (Voltage from CSH1
to CSL1 and from CSH2 to
CSL2)
ON/OFF1
Parameter
= V
ON/OFF2
−0.3 to (V
= 5V. (Note 2), (Note 6) and (Note 7)
−0.3 to 31V
(Notes 2, 1)
−0.3 to 3V
−0.3 to 6V
−0.3 to 7V
−0.3 to 5V
LIN
0 mV
0 mV
5.5V
ON (Note 8)
V
V
V
Standing By (Note 9)
V
Shut Down (Note 10)
V
V
−40˚C
V
FB1
CSH1
CSH2
ON/OFF1
SD
SS1
2NDFB/FPWM
+0.3)V
−0.3V
−0.3V
= 0V
= V
= V
J
= 5.2V, V
= 3.5V, V
V
= 25˚C. Limits appearing in boldface type apply over the entire junc-
(CSH1-CSL1)
(CSH2-CSL2)
IN
T
FB2
SS2
= V
J
Conditions
30V
= 1.4V,
= 1V
ON/OFF2
5
+125˚C
= 0.8V
CSL1
CSL2
Operating Ratings
Junction Temp.
Power Dissipation (Note 3)
Ambient Storage Temp. (T
Soldering Dwell Time, Temp. (Note 4)
ESD Rating (Note 5)
V
Junction Temp. (T
IN
= 5V,
= 3.3V
= 0V
Wave
Infrared
Vapor Phase
80 mV,
80 mV
J
)
Typical
0.002
−100
4.75
100
100
0.5
0.6
80
25
10
J
)
(Notes 1, 2)
Limit
−140
150
−80
140
5.5
2.2
6.0
2.0
7.0
30
60
80
75
1
−65 to +150˚C
10 sec, 240˚C
75 sec, 219˚C
0 to +125˚C
4 sec, 260˚C
5.5 to 30V
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883 mW
mA(max)
mV(max)
mV(max)
+150˚C
µA(max)
µA(max)
µA(max)
mV(min)
mV(min)
mV(min)
µA(min)
V(max)
V(max)
V(min)
V(min)
Units
%/V
mA
mV
mV
2 kV
µA
µA
µA
µA
%
IN