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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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
I
UV_DELAY Sink Current
sk_uvdelay
V
UV_DELAY Threshold
UVDelay
Voltage
V
FB1, FB2, Under
UVP
Voltage Protection Latch
Threshold
Hysteresis
V
V
Overvoltage
OVP
OUT
Shutdown Latch
Threshold
V
Regulator Window
pwrbad
Detector Thresholds
(PGOOD1 from High to
Low)
V
Regulator Window
pwrgd
Detector Thresholds
(PGOOD1 from Low to
High)
S
SW1, SW2
wx_R
ON-Resistance
Gate Drive
I
CBOOTx Leakage
CBOOT
Current
I
HDRVx and LDRVx
SC_DRV
Source Current
I
HDRVx Sink Current
sk_HDRV
I
LDRVx Sink Current
sk_LDRV
R
HDRV1 & 2 Source
HDRV
On-Resistance
HDRV1 & 2 Sink
On-Resistance
R
LDRV1 & 2 Source
LDRV
On-Resistance
LDRV1 & 2 Sink
On-Resistance
Oscillator
F
Oscillator Frequency
osc
Don_max
Maximum On-Duty Cycle
T
Minimum On-Time
on_min
SS
HDRV1 and HDRV2
OT_delta
Delta On Time
Error Amplifier
(Continued)
= 25˚C (Note 6), (Note 7). Min/Max limits are guaranteed
A
Conditions
UV-DELAY = 0.4V
As a percentage of nominal output
voltage (falling edge)
As a percentage measured at V
,
FB1
V
FB2
As a percentage of output voltage
V
= V
= 2V
SW1
SW2
V
= V
= 7V
CBOOT1
CBOOT2
V
= V
= 5V, VSWx=0V,
CBOOT1
CBOOT2
HDRVx=LDRVx=2.5V
V
= VDDx = 5V, V
= 0V,
CBOOTx
SWx
HDRVX = 2.5V
V
= VDDx = 5V, V
= 0V,
CBOOTx
SWx
LDRVX = 2.5V
V
= V
= 5V,
CBOOT1
CBOOT2
V
= V
= 0V
SW1
SW2
V
= V
= 5V,
CBOOT1
CBOOT2
V
= V
= 0V
SW1
SW2
V
= V
= 5V
DD1
DD1
-40˚C to 125˚C
V
= V
= 1V, Measured at pins
FB1
FB2
HDRV1 and HDRV2
-40˚C to 125˚C
ON/SS1 = ON/SS2 = 2V
5
Min
Typ
Max
Units
0.2
0.48
1.2
mA
2.3
V
75
80
86
%
4
%
107
113
122
%
86.5
90.3
94.5
%
91.5
94
97.0
%
420
480
535
10
nA
0.5
A
0.8
A
1.1
A
3.1
1.5
3.1
1.1
260
300
340
kHz
257.5
340
96
98
%
95.64
166
ns
20
150
ns
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