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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TPS54040-Q1
SLVSA26C – JANUARY 2010 – REVISED AUGUST 2011
ELECTRICAL CHARACTERISTICS (continued)
T
= –40°C to 150°C, VIN = 3.5 to 42V (unless otherwise noted)
J
PARAMETER
CURRENT LIMIT
Current limit threshold
THERMAL SHUTDOWN
Thermal shutdown
TIMING RESISTOR AND EXTERNAL CLOCK (RT/CLK PIN)
Switching frequency using RT mode
f
Switching frequency
SW
Switching frequency using CLK mode VIN = 12 V
Minimum CLK input pulse width
RT/CLK high threshold
RT/CLK low threshold
RT/CLK falling edge to PH rising
edge delay
PLL lock in time
SLOW START AND TRACKING (SS/TR)
Charge current
SS/TR-to-VSENSE matching
SS/TR-to-reference crossover
SS/TR discharge current (overload)
SS/TR discharge voltage
POWER GOOD (PWRGD PIN)
V
VSENSE threshold
VSENSE
Hysteresis
Output high leakage
On resistance
Minimum VIN for defined output
4
TEST CONDITIONS
VIN = 12 V, T
= 25°C
J
VIN = 12 V
VIN = 12 V, R
= 200 kΩ
T
VIN = 12 V
VIN = 12 V
Measured at 500 kHz with RT resistor in series
Measured at 500 kHz
V
= 0.4 V
SS/TR
V
= 0.4 V
SS/TR
98% nominal
VSENSE = 0 V, V(SS/TR) = 0.4 V
VSENSE = 0 V
VSENSE falling
VSENSE rising
VSENSE rising
VSENSE falling
VSENSE falling
VSENSE = VREF, V(PWRGD) = 5.5 V, 25°C
I(PWRGD) = 3 mA, VSENSE < 0.79 V
V(PWRGD) < 0.5 V, II(PWRGD) = 100 μA
Copyright © 2010–2011, Texas Instruments Incorporated
www.ti.com
MIN
TYP
MAX
UNIT
0.6
0.94
A
182
°C
100
2500
kHz
450
581
720
kHz
300
2200
kHz
40
ns
1.9
2.2
V
0.45
0.7
V
60
ns
100
μs
2
μA
45
mV
1.0
V
112
μA
54
mV
92
94
109
%
107
2
10
nA
50
0.95
1.5
V