The TPS54040 device is a 42-V 0

TPS54040-Q1

Manufacturer Part NumberTPS54040-Q1
DescriptionThe TPS54040 device is a 42-V 0
ManufacturerTexas Instruments
TPS54040-Q1 datasheet
 


Specifications of TPS54040-Q1

Iout(max)(a)0.5Vin(min)(v)3.5
Vin(max)(v)42Vout(min)(v)0.8
Vout(max)(v)39Iq(typ)(ma)0.116
Switching Frequency(max)(khz)2500Switch Current Limit(typ)(a)0.6
TopologyBuck,Inverting Buck-BoostOperating Temperature Range(c)-40 to 125
Pin/package10MSOP-PowerPAD, 10SONDuty Cycle(max)(%)95
Regulated Outputs(#)1  
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THERMAL INFORMATION
THERMAL METRIC
θ
Junction-to-ambient thermal resistance (standard board)
JA
θ
Junction-to-ambient thermal resistance (custom board)
JA
θ
Junction-to-case (top) thermal resistance
JCtop
θ
Junction-to-board thermal resistance
JB
ψ
Junction-to-top characterization parameter
JT
ψ
Junction-to-board characterization parameter
JB
θ
Junction-to-case (bottom) thermal resistance
JCbot
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
(2) Power rating at a specific ambient temperature T
distortion starts to substantially increase. See power dissipation estimate in application section of this data sheet for more information.
(3) Test boards conditions:
(a) 3 inches x 3 inches, 2 layers, thickness: 0.062 inch
(b) 2 oz. copper traces located on the top of the PCB
(c) 2 oz. copper ground plane, bottom layer
(d) 6 thermal vias (13mil) located under the device package
ELECTRICAL CHARACTERISTICS
T
= –40°C to 150°C, VIN = 3.5 to 42V (unless otherwise noted)
J
PARAMETER
SUPPLY VOLTAGE (VIN PIN)
Operating input voltage
Internal undervoltage lockout
threshold
Shutdown supply current
Operating : nonswitching supply
current
ENABLE AND UVLO (EN PIN)
Enable threshold voltage
Input current
Hysteresis current
VOLTAGE REFERENCE
Voltage reference
HIGH-SIDE MOSFET
On-resistance
ERROR AMPLIFIER
Input current
Error amplifier transconductance (g
Error amplifier transconductance (g
during slow start
Error amplifier dc gain
Error amplifier bandwidth
Error amplifier source/sink
COMP to switch current
transconductance
Copyright © 2010–2011, Texas Instruments Incorporated
SLVSA26C – JANUARY 2010 – REVISED AUGUST 2011
(1) (2)
(3)
should be determined with a junction temperature of 150°C. This is the point where
A
TEST CONDITIONS
No voltage hysteresis, rising and falling
EN = 0 V, 25°C, 3.5 V ≤ VIN ≤ 42 V
VSENSE = 0.83 V, VIN = 12 V, 25°C
No voltage hysteresis, rising and falling, 25°C
Enable threshold +50 mV
Enable threshold –50 mV
T
= 25°C
J
VIN = 3.5 V, BOOT-PH = 3 V
VIN = 12 V, BOOT-PH = 6 V
) –2 μA < I
< 2 μA, V
= 1 V
M
COMP
COMP
–2 μA < I
< 2 μA, V
= 1 V,
)
COMP
COMP
M
V
= 0.4 V
VSENSE
V
= 0.8 V
VSENSE
V
= 1 V, 100 mV overdrive
(COMP)
TPS54040-Q1
TPS54040-Q1
DGQ
DRC
UNITS
10 PINS
10 PINS
62.5
56.5
57
61.5
83
52.1
28
20.6
°C/W
1.7
0.9
20.1
20.8
21
5.2
MIN
TYP
MAX
UNIT
3.5
42
V
2.5
V
1.3
4
μA
116
136
0.9
1.25
1.55
V
–3.8
μA
–0.9
–2.9
μA
0.792
0.8
0.808
V
0.784
0.8
0.816
300
mΩ
200
410
50
nA
97
μMhos
26
μMhos
10,000
V/V
2700
kHz
±7
μA
1.9
A/V
3