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LM2642MTC датащи(PDF) 6 Page - Texas Instruments

номер детали LM2642MTC
подробное описание детали  LM2642 Two-Phase Synchronous Step-Down Switching Controller
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производитель  TI [Texas Instruments]
домашняя страница  http://www.ti.com
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LM2642MTC датащи(HTML) 6 Page - Texas Instruments

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LM2642
SNVS203I – MAY 2002 – REVISED APRIL 2013
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
Unless otherwise specified, VIN = 15V, GND = PGND = 0V, VLIN5 = VDD1 = VDD2. Limits appearing in boldface type apply
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 TA = 25°C
(1), (2). Min/Max limits are specified by
design, test, or statistical analysis.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
ISC_DRV
HDRVx and LDRVx Source
VCBOOT1 = VCBOOT2 = 5V, VSWx=0V,
0.5
A
Current
HDRVx=LDRVx=2.5V
Isk_HDRV
HDRVx Sink Current
VCBOOTx = VDDx = 5V, VSWx = 0V, HDRVX
0.8
A
= 2.5V
Isk_LDRV
LDRVx Sink Current
VCBOOTx = VDDx = 5V, VSWx = 0V, LDRVX
1.1
A
= 2.5V
RHDRV
HDRV1 & 2 Source On-
VCBOOT1 = VCBOOT2 = 5V,
3.1
Resistance
VSW1 = VSW2 = 0V
HDRV1 & 2 Sink On-
1.5
Resistance
RLDRV
LDRV1 & 2 Source On-
VCBOOT1 = VCBOOT2 = 5V,
3.1
Resistance
VSW1 = VSW2 = 0V
VDD1 = VDD1 = 5V
LDRV1 & 2 Sink On-
1.1
Resistance
Oscillator
Fosc
Oscillator Frequency
260
300
340
kHz
-40°C to 125°C
257.5
340
Don_max
Maximum On-Duty Cycle
VFB1 = VFB2 = 1V, Measured at pins
96
98
HDRV1 and HDRV2
%
-40°C to 125°C
95.64
Ton_min
Minimum On-Time
166
ns
SSOT_delta
HDRV1 and HDRV2 Delta
ON/SS1 = ON/SS2 = 2V
20
150
ns
On Time
Error Amplifier
IFB1, IFB2
Feedback Input Bias
VFB1_FIX = 1.5V, VFB2_FIX = 1.5V
65
±200
nA
Current
Icomp1_SC,
COMP Output Source
VFB1_FIX = VFB2_FIX = 1V,
18
113
Icomp2_SC
Current
VCOMP1 = VCOMP2 = 1V
µA
0°C to 125°C
32
-40°C to 125°C
6
Icomp1_SK,
COMP Output Sink Current
VFB1_FIX = VFB2_FIX = 1.5V and
18
108
Icomp2_SK
VCOMP1 = VCOMP2 = 0.5V
µA
0°C to 125°C
32
-40°C to 125°C
6
gm1, gm2
Transconductance
650
µmho
GISNS1,
Current Sense Amplifier
VCOMPx = 1.25V
4.2
5.2
7.5
GISNS2
(1&2) Gain
Voltage References and Linear Voltage Regulators
UVLO
VLIN5 Under-voltage
ON/SS1, ON/SS2 transition
Lockout
from low to high
3.6
4.0
4.4
V
Threshold Rising
Logic Outputs
IOL
PGOOD Low Sink Current
VPGOOD = 0.4V
0.60
0.95
mA
IOH
PGOOD High Leakage
VPGOOD = 5V
5
200
nA
Current
6
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Product Folder Links: LM2642


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