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TPS62684 Datasheet(PDF) 4 Page - Texas Instruments

No. de Pieza. TPS62684
Descripción  1600-mA, High-Efficiency Step-Down Converter Optimized for Smallest Solution Size
Descarga  27 Pages
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Fabricante  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
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TPS62684 Datasheet(HTML) 4 Page - Texas Instruments

 
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TPS62684
SLVSAC5 – APRIL 2014
www.ti.com
7 Specifications
7.1 Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted)
(1)
MIN
MAX
UNIT
Voltage at VIN(2)
–0.3
6
VI
Voltage at FB(2)
–0.3
3.6
V
Voltage at SW, EN, AVIN (2)
–0.3
VIN + 0.3
Continuous average output current(3)
890
mA
Peak output current(3)
1600
mA
TJ
Operating junction temperature(4)
-40
150
°C
(1)
Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings
only and functional operation of the device at these or any other conditions beyond those indicated under recommended operating
conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2)
All voltage values are with respect to network ground terminal.
(3)
Limit the junction temperature to 105°C.
(4)
In applications where high power dissipation and/or poor package thermal resistance is present, the maximum ambient temperature may
have to be derated. Maximum ambient temperature (TA(max)) is dependent on the maximum operating junction temperature (TJ(max)), the
maximum power dissipation of the device in the application (PD(max)), and the junction-to-ambient thermal resistance of the part/package
in the application (
θJA), as given by the following equation: TA(max)= TJ(max)–(θJA X PD(max)). To achieve full lifetime, it is recommended to
operate the device with a maximum junction temperature of 105°C.
7.2 Handling Ratings
MIN
MAX
UNIT
Tstg
Storage temperature range
–65
150
°C
Human body model
2
kV
ESD rating (1)
Charge device model
1
Machine model
100
V
(1)
The human body model is a 100-pF capacitor discharged through a 1.5-k
Ω resistor into each pin. The machine model is a 200-pF
capacitor discharged directly into each pin.
7.3 Recommended Operating Conditions
MIN
NOM
MAX UNIT
VIN
Input voltage range
3.25
5.5
V
VIN < VOUT,nom + 1V
0
960
IO
Peak output current(1)
mA
VOUT,nom + 1V ≤ VIN ≤ 5.5V
0
1600
CI
Effective Input Capacitance(2)(3)
0.5
µF
L
Effective Inductance
0.3
1.2
µH
CO
Effective Output Capacitance(2)
3.0
5.0
30
µF
TA
Ambient temperature(4)
–40
+85
°C
TJ
Operating junction temperature(5)
–40
+125
°C
(1)
Operating beyond the continuous average output current of 890mA may decrease the lifetime. See the Thermal, Lifetime Information
and Maximum Output Current section.
(2)
Due to the dc bias effect of ceramic capacitors, the effective capacitance is lower than the nominal value when a voltage is applied. The
capacitance is specified to allow the selection of the appropriate capacitor taking into account its dc bias effect.
(3)
Larger values may be required if the source impedance can not support the transient requirements of the load.
(4)
In applications where high power dissipation and/or poor package thermal resistance is present, the maximum ambient temperature may
have to be derated. Maximum ambient temperature (TA(max)) is dependent on the maximum operating junction temperature (TJ(max)), the
maximum power dissipation of the device in the application (PD(max)), and the junction-to-ambient thermal resistance of the part/package
in the application (
θJA), as given by the following equation: TA(max)= TJ(max)–(θJA X PD(max)). To achieve full lifetime, it is recommended to
operate the device with a maximum junction temperature of 105°C.
(5)
Limit the junction temperature to 105°C at 1.6A output current for a lifetime of 25k hours.
4
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Product Folder Links: TPS62684


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