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TPS54260 Datasheet(PDF) 3 Page - Texas Instruments

No. de pieza TPS54260
Descripción Electrónicos  3.5V to 60V INPUT, 2.5A, STEP DOWN CONVERTER WITH ECO-MODE?
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Fabricante Electrónico  TI [Texas Instruments]
Página de inicio  http://www.ti.com
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TPS54260 Datasheet(HTML) 3 Page - Texas Instruments

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TPS54260
www.ti.com
SLVSA86 – MARCH 2010
PACKAGE DISSIPATION RATINGS
(1)
THERMAL IMPEDANCE
PACKAGE
JUNCTION TO AMBIENT
MSOP
57 °C/W
(1)
Test board conditions:
A. 3 inches × 3 inches, 2 layers, thickness: 0.062 inch
B. 2-ounce copper traces located on the top and bottom of the PCB
C. 6 (13 mil diameters) THERMAL VIAS LOCATED UNDER THE DEVICE PACKAGE
ELECTRICAL CHARACTERISTICS
TJ = –40°C to 150°C, VIN = 3.5 to 60V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SUPPLY VOLTAGE (VIN PIN)
Operating input voltage
3.5
60
V
Internal undervoltage lockout
No voltage hysteresis, rising and falling
2.5
V
threshold
Shutdown supply current
EN = 0 V, 25°C, 3.5 V
≤ VIN ≤ 60 V
1.3
4
mA
Operating : nonswitching supply
VSENSE = 0.83 V, VIN = 12 V, 25°C
138
200
current
ENABLE AND UVLO (EN PIN)
Enable threshold voltage
No voltage hysteresis, rising and falling, 25°C
1.15
1.25
1.36
V
Enable threshold +50 mV
–3.8
Input current
mA
Enable threshold –50 mV
–0.9
Hysteresis current
–2.9
mA
VOLTAGE REFERENCE
TJ = 25°C
0.792
0.8
0.808
Voltage reference
V
0.784
0.8
0.816
HIGH-SIDE MOSFET
VIN = 3.5 V, BOOT-PH = 3 V
300
On-resistance
m
VIN = 12 V, BOOT-PH = 6 V
200
410
ERROR AMPLIFIER
Input current
50
nA
Error amplifier transconductance (gM) –2 mA < ICOMP < 2 mA, VCOMP = 1 V
310
mMhos
–2 mA < ICOMP < 2 mA, VCOMP = 1 V,
Error amplifier transconductance (gM)
70
mMhos
during slow start
VVSENSE = 0.4 V
Error amplifier dc gain
VVSENSE = 0.8 V
10,000
V/V
Error amplifier bandwidth
2700
kHz
Error amplifier source/sink
V(COMP) = 1 V, 100 mV overdrive
±27
mA
COMP to switch current
10.5
A/V
transconductance
CURRENT LIMIT
Current limit threshold
VIN = 12 V, TJ = 25°C
3.5
6.1
A
THERMAL SHUTDOWN
Thermal shutdown
182
°C
Copyright © 2010, Texas Instruments Incorporated
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