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LM20136 Scheda tecnica(PDF) 3 Page - Texas Instruments

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Il numero della parte LM20136
Spiegazioni elettronici  LM20136 6A, Synchronous Buck Regulator with Input Synchronization
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Produttore elettronici  TI [Texas Instruments]
Homepage  http://www.ti.com
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LM20136
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SNVS564B – JANUARY 2009 – REVISED APRIL 2013
Absolute Maximum Ratings
(1) (2)
Voltages from the indicated pins to GND
AVIN, PVIN, EN, PGOOD, SS/TRK, COMP, FB, SW, SYNC
-0.3V to +6V
Storage Temperature
-65°C to 150°C
Junction Temperature
150°C
Power Dissipation(3)
2.6W
Lead Temperature (Soldering, 10 sec)
260°C
Minimum ESD Rating(4)
±2kV
(1)
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for
which the device is intended to be functional, but do not ensure specific performance limits. For ensured specifications and test
conditions, see the Electrical Characteristics.
(2)
If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/Distributors for availability and
specifications.
(3)
The maximum allowable power dissipation is a function of the maximum junction temperature, TJ_MAX, the junctions-to-ambient thermal
resistance,
θJA, and the ambient temperature, TA. The maximum allowable power dissipation at any ambient temperature is calculated
using: PD_MAX = (TJ_MAX – TA)/θJA. The maximum power dissipations of 2.6W is determined using TA = 25°C, θJA = 25°C/W, and TJ_MAX
= 125°C. The
θJA specification of 25°C/W listed in the electrical characteristics table is measured with the part surface mounted to a 2" x
2" FR4 4 layer board. See Figure 37 for more detailed
θJA information.
(4)
The human body model is a 100 pF capacitor discharged through a 1.5 k
Ω resistor to each pin.
Operating Ratings
PVIN, AVIN to GND
2.95V to 5.5V
Junction Temperature
−40°C to + 125°C
Electrical Characteristics
Unless otherwise stated, the following conditions apply: AVIN = PVIN = VIN = 5V. Limits in standard type are for TJ = 25°C
only, limits in bold face type apply over the junction temperature (TJ) range of -40°C to +125°C. Minimum and Maximum limits
are specified 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.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VFB
Feedback pin voltage
VIN = 2.95V to 5.5V
0.788
0.8
0.812
V
ΔVOUT/ΔIOUT
Load Regulation
IOUT = 100 mA to 6A
0.04
%/A
ICL
Switch Current Limit Threshold
VIN = 3.3V
7.65
8.5
9.35
A
RDS_ON
High-Side Switch On Resistance
ISW = 3.5A
20
27
m
RDS_ON
Low-Side Switch On Resistance
ISW = 3.5A
16
23
m
IQ
Operating Quiescent Current
Non-switching, VFB = VCOMP
3.5
6
mA
ISD
Shutdown Quiescent current
VEN = 0V
75
180
µA
VUVLO
VIN Under Voltage Lockout
Rising VIN
2.45
2.7
2.95
V
VUVLO_HYS
VIN Under Voltage Lockout Hysteresis
Falling VIN
45
100
mV
VVCC
VCC Voltage
IVCC = 0 µA
2.45
2.7
2.95
V
ISS
Soft-Start Pin Source Current
VSS/TRK = 0V
2
4.5
7
µA
VTRACK
SS/TRK Accuracy, VSS - VFB
VSS/TRK = 0.4V
-10
3
15
mV
Oscillator and Clock Synchronization
FOSC
Oscillator Frequency
VSYNC = Static
360
410
460
kHz
FOSCH
Maximum SYNC Frequency
1500
kHz
FOSCL
Minimum SYNC Frequency
460
kHz
VIH_SYNC
SYNC pin Logic High
2
V
VIL_SYNC
SYNC pin Logic Low
0.8
V
ISYNC
SYNC pin input leakage
VSYNC = 5V
10
nA
DCMAX
Maximum Duty Cycle
ILOAD = 0A
85
%
TON_TIME
Minimum On Time
100
ns
TCL_BLANK
Current Sense Blanking Time
After Rising VSW
80
ns
Error Amplifier and Modulator
Copyright © 2009–2013, Texas Instruments Incorporated
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