Texas Instruments TPS61080/81-147 Evaluation Board TPS61080/81EVM-147 TPS61080EVM-147 TPS61080EVM-147 Datenbogen
Produktcode
TPS61080EVM-147
SLVS644D – FEBRUARY 2006 – REVISED APRIL 2013
ELECTRICAL CHARACTERISTICS (continued)
VIN = 3.6 V, EN = VIN, T
A
= –40°C to 85°C, typical values are at T
A
= 25°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SOFT START
T
A
= 25°C
4.75
5
5.25
I
ss
Soft start bias current
μ
A
4.6
5
5.4
V
clp
SS pin to FB pin accuracy
V
SS
= 500 mV
487
500
513
mV
FEEDBACK FB
I
FB
Feedback input bias current
V
FB
= 1.229 V
–100
100
nA
V
FB
Feedback regulation voltage
1.204
1.229
1.254
V
POWER SWITCH AND DIODE
Isolation MOSFET on-resistance
0.06
0.1
Ω
R
DS(ON)
V
IN
= VGS = 3.6 V
0.17
0.22
N-channel MOSFET on-resistance
Ω
V
IN
= VGS = 2.5 V
0.2
0.32
I
LN_NFET
N-channel leakage current
V
DS
= 28 V
1
2
μ
A
V
F
Power diode forward voltage
Id = 1 A
0.85
1
V
I
LN_ISO
Isolation FET leakage current
L pin to ground
1
μ
A
OC AND SC
TPS61080, FSW = High or FSW = Low
0.5
0.7
1.0
I
LIM
N-Channel MOSFET current limit
(1)
A
TPS61081, FSW = High or FSW = Low
1.3
1.6
2.0
TPS61080
1.0
2.2
I
SC
Short circuit current limit
A
TPS61081
2.0
3.5
t
scd
Short circuit delay time
13
μ
s
t
scr
Short circuit release time
57
ms
V
SC
OUT short detection threshold
(2)
V
IN
– V
OUT
1.4
V
OSCILLATOR
FSW pin high
1.0
1.2
1.5
f
S
Oscillator frequency
MHz
FSW pin low
0.5
0.6
0.7
D
max
Maximum duty cycle
FB = 1.0 V
90%
94%
D
min
Minimum duty cycle
5%
R
fsw
FSW pin pull down resistance
400
800
1600
k
Ω
FSW high logic
1.6
V
FSW
V
FSW low logic
0.8
OVP
Output overvoltage protection
V
OUT
rising
27
28
29
V
Vovp
Output overvoltage protection hysteresis
V
OUT
falling
0.7
V
THERMAL SHUTDOWN
T
shutdown
Thermal shutdown threshold
160
°C
T
hysteresis
Thermal shutdown threshold hysteresis
15
°C
(1)
V
IN
= 3.6 V, V
OUT
= 15 V, Duty cycle = 76%. See
to
for other operation conditions.
(2)
OUT short circuit condition is detected if OUT stays lower than VIN – V
SC
for 1.7 ms after IC enables. See the
section for
details.
4
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