As a member of the SWIFT™ family of dc/dc regulators, the TPS54073 low-input voltage high-output current synchronous buck PWM converter integrates all required active components

TPS54073

Manufacturer Part NumberTPS54073
DescriptionAs a member of the SWIFT™ family of dc/dc regulators, the TPS54073 low-input voltage high-output current synchronous buck PWM converter integrates all required active components
ManufacturerTexas Instruments
TPS54073 datasheet
 


Specifications of TPS54073

Iout(max)(a)14Vin(min)(v)2.2
Vin(max)(v)4Vout(min)(v)0.9
Vout(max)(v)2.5Iq(typ)(ma)13
Switching Frequency(max)(khz)700Switch Current Limit(typ)(a)14.5
TopologyBuckOperating Temperature Range(c)-40 to 85
Pin/package28HTSSOPDuty Cycle(max)(%)90
Regulated Outputs(#)1  
1
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............................................................................................................................................................................................
ELECTRICAL CHARACTERISTICS
T
= –40°C to 125°C, VIN = 3 V to 4 V, PVIN = 2.2 V to 4 V (unless otherwise noted)
J
PARAMETER
SUPPLY VOLTAGE, VIN
V
Input voltage, VIN
I
Supply voltage range, PVIN
VIN = 3.3 V
I
Quiescent current
Q
PVIN = 2.5 V
UNDERVOLTAGE LOCKOUT (VIN)
Start threshold voltage, UVLO
Stop threshold voltage, UVLO
Hysteresis voltage, UVLO
Rising and falling edge deglitch, UVLO
BIAS VOLTAGE
Output voltage, VBIAS
(2)
Output current, VBIAS
CUMULATIVE REFERENCE
V
Accuracy
ref
REGULATION
(3) (4)
Line regulation
(3) (4)
Load regulation
OSCILLATOR
Internally set—free running frequency
Externally set—free running frequency range
High-level threshold voltage, SYNC
Low-level threshold voltage, SYNC
(3)
Pulse duration, SYNC
Frequency range, SYNC
(3)
Ramp valley
(3)
Ramp amplitude (peak-to-peak)
(3)
Minimum controllable on time
(3)
Maximum duty cycle
(1) Specified by design
(2) Static resistive loads only
(3) Specified by design
(4) Specified by the circuit used in
Figure 12
Copyright © 2005, Texas Instruments Incorporated
TEST CONDITIONS
Output = 1.8 V
f
= 350 kHz, RT open, PH pin open, SYNC = 0 V,
s
PVIN = 2.5 V
f
= 550 kHz, RT open, PH pin open, SYNC ≥ 2.5 V,
s
PVIN = 2.5 V
SHUTDOWN, SS/ENA = 0 V, PVIN = 2.5 V
f
= 350 kHz, RT open, PH pin open, SYNC = 0 V,
s
VIN = 3.3 V
f
= 550 kHz, RT open, PH pin open, SYNC ≥ 2.5 V,
s
VIN = 3.3 V
SHUTDOWN, SS/ENA = 0 V, VIN = 3.3 V
(1)
I
= 0
(VBIAS)
I
= 7 A, f
= 350 kHz, T
= 85°C
L
s
J
I
= 0 A to 14 A, f
= 350 kHz, T
= 85°C
L
s
J
PVIN = 2.5 V, VIN = 3.3 V
(3)
RT open
, SYNC ≤ 0.8 V
(3)
RT open
, SYNC ≥ 2.5 V
(3)
RT = 180 kΩ (1% resistor to AGND)
RT = 100 kΩ (1% resistor to AGND)
(3)
RT = 68 kΩ (1% resistor to AGND)
Product Folder Link(s):
TPS54073
TPS54073
SLVS547 – FEBRUARY 2005
MIN
TYP
MAX
UNIT
3
4
V
2.2
4
V
6.3
10
mA
8.6
13
mA
1
1.4
mA
3.2
6
mA
4.4
7
mA
< 140
A
2.9
3
V
2.7
2.8
V
100
mV
2.5
s
2.7
2.8
2.9
V
100
A
0.882
0.891
0.900
V
0.05
%/V
0.013
%/A
280
350
420
kHz
440
550
660
252
280
308
460
500
540
kHz
663
700
762
2.5
V
0.8
V
50
ns
300
700
kHz
0.75
V
1
V
200
ns
90%
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