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
V
V
IN
OUT
PCL
NCL
Absolute Maximum Ratings
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Operating Ratings
Electrical Characteristics
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
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
, I
Symbol
2NDFB/FPWM, SYNC, REF,
SS1, SS2, COMP1,
COMP2 and CSL1
and from CBOOT2 to SW2
and from HDRV2 to SW2
SS2
/V
/ V
OUT
IN
SD
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)
= V
ON/OFF1
Parameter
= V
(Notes 1, 2)
ON/OFF2
V
Junction Temp. (T
IN
−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
J
= 0V
)
= V
= V
J
= 5.2V, V
= 3.5V, V
V
(CSH1-CSL1)
(CSH2-CSL2)
= 25˚C. Limits appearing in boldface type apply over the entire junc-
IN
T
FB2
SS2
= V
J
Conditions
30V
= 1.4V,
= 1V
ON/OFF2
+125˚C
= 0.8V
5
CSL1
CSL2
Voltage from CBOOT1 to
HDRV1 and from CBOOT2
Junction Temp.
Power Dissipation (Note 3)
Ambient Storage Temp. (T
Soldering Dwell Time, Temp. (Note 4)
ESD Rating (Note 5)
HDRV2
= 5V,
= 3.3V
= 0V
Wave
Infrared
Vapor Phase
80 mV,
80 mV
0 to +125˚C
5.5 to 30V
Typical
0.002
−100
4.75
100
100
0.5
0.6
80
25
10
J
)
Limit
−140
150
140
−80
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
4 sec, 260˚C
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mA(max)
mV(max)
mV(max)
883 mW
µA(max)
µA(max)
µA(max)
mV(min)
mV(min)
mV(min)
µA(min)
V(max)
V(max)
V(min)
V(min)
+150˚C
Units
%/V
mA
mV
mV
−0.3V
µA
µA
µA
µA
%
2 kV
IN