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LM3000 Scheda tecnica(PDF) 7 Page - Texas Instruments

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Il numero della parte LM3000
Spiegazioni elettronici  Dual Synchronous Emulated Current-Mode Controller
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Produttore elettronici  TI1 [Texas Instruments]
Homepage  http://www.ti.com
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LM3000
www.ti.com
SNVS612B – JULY 2009 – REVISED APRIL 2013
Electrical Characteristics (continued)
Limits in standard type are for TJ = 25°C only; limits in boldface type apply over the junction temperature (TJ) range of -40°C
to +125°C. Minimum and Maximum limits are ensured through test, design, or statistical correlation. Typical values represent
the most likely parametric norm at TJ = 25°C, and are provided for reference purposes only. Unless otherwise noted, VIN =
12.0V, IEN1 = IEN2 = 40 µA.
Symbol
Parameter
Condition
Min
Typ
Max
Units
VCOMP-HI
COMP Pin Voltage High Clamp
2.80
3.0
3.2
V
VCOMP-LO
COMP Pin Voltage Low Clamp
0.48
V
VOS-TRK
Offset Using TRK Pin
TRK = 0.45V
-9.0
0
9.0
mV
gm
Transconductance
1400
µS
fBW
Unity Gain Bandwidth Frequency
10
MHz
INTERNAL VOLTAGE REGULATOR
VVDD
Internal Core Regulator Voltage
No External Load
5.15
V
VVDD-ON
UVLO Thresholds
VDD Rising
2.12
V
Hysteresis
0.14
VVDD-DO
Internal Core Regulator Dropout Voltage
No External Load
1.1
V
IVDD-ILIM
Internal Core Regulator Current Limit
VDD Short to Ground
80
mA
VVDR
Regulator for External MOSFET Drivers
IVDR = 100 mA
5.2
V
VVDR-DO
Driver Regulator Dropout Voltage
IVDR = 100 mA
1.0
V
IVDR-ILIM
Driver Regulator Current Limit
VDR Short to Ground
450
mA
PGOOD OUTPUT
RPG-ON
PGOOD On-Resistance
FB1 = FB2 = 0.47V
250
IOH
PGOOD High Leakage Current
VPGOOD = 5V
100
nA
THERMAL RESISTANCE
θJA
Junction-to-Ambient Thermal Resistance
WQFN-32 Package(1)
26.4
°C/W
(1)
Tested on a four layer JEDEC board. Four vias provided under the exposed pad. See JEDEC standards JESD51-5 and JESD51-7.
Copyright © 2009–2013, Texas Instruments Incorporated
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