LM2642MTC/NOPB

Manufacturer Part NumberLM2642MTC/NOPB
DescriptionIC CTRLR SW SYNC STPDN 28TSSOP
ManufacturerNational Semiconductor
LM2642MTC/NOPB datasheet
 


Specifications of LM2642MTC/NOPB

ApplicationsEmbedded systems, Console/Set-Top boxesCurrent - Supply1mA
Voltage - Supply4.5 V ~ 30 VOperating Temperature-40°C ~ 125°C
Mounting TypeSurface MountPackage / Case28-TSSOP
Dc To Dc Converter TypeSynchronous Step Down ControllerNumber Of Outputs2
Pin Count28Input Voltage4.5 to 30V
Output Voltage1.3 to 30VOutput Current20A
Package TypeTSSOPMountingSurface Mount
Operating Temperature ClassificationAutomotiveOperating Temperature (min)-40C
Operating Temperature (max)125CPrimary Input Voltage30V
No. Of Outputs1No. Of Pins28
Operating Temperature Range-40°C To +125°CMslMSL 3 - 168 Hours
Control ModeCurrentRohs CompliantYes
For Use WithLM2642REVD EVAL - BOARD EVALUATION LM2642Lead Free Status / RoHS StatusLead free / RoHS Compliant
Other names*LM2642MTC
*LM2642MTC/NOPB
LM2642MTC
  
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Absolute Maximum Ratings
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 SGND/PGND:
VIN, ILIM1, ILIM2, KS1, KS2
SW1, SW2, RSNS1, RSNS2
FB1, FB2, VDD1, VDD2
PGOOD, COMP1, COMP2, UV
Delay
ON/SS1, ON/SS2 (Note 2)
CBOOT1 to SW1, CBOOT2 to SW2
LDRV1, LDRV2
HDRV1 to SW1, HDRV2 to SW2
HDRV1 to CBOOT1, HDRV2 to
CBOOT2
Electrical Characteristics
Unless otherwise specified, V
= 15V, GND = PGND = 0V, VLIN5 = VDD1 = VDD2. Limits appearing in boldface type apply
IN
over the specified operating junction temperature range, (-20˚C to +125˚C, if not otherwise specified). Specifications appearing
in plain type are measured using low duty cycle pulse testing with T
by design, test, or statistical analysis.
Symbol
Parameter
System
∆V
/V
Load Regulation
OUT
OUT
∆V
/V
Line Regulation
OUT
OUT
V
Feedback Voltage
FB1_FI2
I
Input Supply Current
VIN
VLIN5
VLIN5 Output Voltage
(Note 9)
V
Current Limit
CLos
Comparator Offset
(VILIMX −VRSNSX)
I
Current Limit Sink
CL
Current
I
,
Soft-Start Source
ss_SC1
I
Current
ss_SC2
I
,
Soft-Start Sink Current
ss_SK1
I
ss_SK2
V
,
Soft-Start On Threshold
ON_SS1
V
ON_SS2
V
Soft-Start Timeout
SSTO
Threshold
I
UV_DELAY Source
sc_uvdelay
Current
www.national.com
(Note 1)
Power Dissipation (T
(Note 3)
Ambient Storage Temperature
Range
Soldering Dwell Time, Temperature
(Note 4)
−0.3V to 32V
Wave
−0.3 to (V
+
IN
Infrared
0.3)V
Vapor Phase
−0.3V to 6V
ESD Rating (Note 5)
−0.3V to (VLIN5
+0.3)V
Operating Ratings
−0.3V to (VLIN5
+0.6)V
VIN (VLIN5 tied to VIN)
−0.3V to 7V
VIN (VIN and VLIN5 separate)
−0.3V to
Junction Temperature
(VDD+0.3)V
−0.3V
+0.3V
= 25˚C (Note 6), (Note 7). Min/Max limits are guaranteed
A
Conditions
VIN = 15V, V
= 0.5V to 1.5V
compx
5.5V ≤ VIN ≤ 30V, V
=1.25V
compx
5.5V ≤ VIN ≤ 30V
0˚C to 125˚C
-40˚C to 125˚C
>
V
2V
ON_SSx
5.5V ≤ VIN ≤ 30V
Shutdown (Note 8)
V
= V
= 0V
ON_SS1
ON_SS2
IVLIN5 = 0 to 25mA,
5.5V ≤ VIN ≤ 30V
-40˚C to 125˚C
-40˚C to 125˚C
V
= V
= 1.5V (on)
ON_ss1
ON_ss2
V
= V
= 2V
ON_ss1
ON_ss2
(Note 10)
UV-DELAY = 2V
4
= 25˚C),
A
1.1W
−65˚C to +150˚C
4 sec, 260˚C
10sec, 240˚C
75sec, 219˚C
2kV
(Note 1)
4.5V to 5.5V
5.5V to 30V
−40˚C to +125˚C
Min
Typ
Max
Units
0.04
%
0.04
%
1.215
1.238
1.260
1.217
1.259
V
1.212
1.261
1.0
mA
2.0
37
µA
110
4.70
5
5.30
V
4.68
5.30
±
±
2
7.0
mV
9
10
11
µA
8.67
11
0.5
2
5.0
µA
2
5.2
10
µA
0.7
1.12
1.4
V
3.3
V
2
5
9
µA