Texas Instruments TPS61181(82/81A)-259 Evaluation Board TPS61181(82/81A)EVM-259 TPS61181AEVM-259 TPS61181AEVM-259 Datenbogen
Produktcode
TPS61181AEVM-259
SLVSAN6A
–
FEBRUARY 2011
–
REVISED MARCH 2011
ELECTRICAL CHARACTERISTICS (continued)
V
BAT
= 10.8 V, 0.1
μ
F at Cin, EN = Logic High, IFB current = 20 mA, IFB voltage = 500 mV, 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
OSCILLATOR
f
S
Oscillator frequency
0.9
1.0
1.2
MHz
D
max
Maximum duty cycle
IFB = 0 V
94
%
D
min
Minimum duty cycle
7
%
OS, SC, OVP AND SS
I
LIM
N-Channel MOSFET current limit
D = D
max
1.5
3
A
V
ovp
V
O
overvoltage threshold
Measured on the V
O
pin
38
39
40
V
V
ovp_IFB
IFB overvoltage threshold
Measured on the IFBx pin
15
17
20
V
V
sc
Short circuit detection threshold
V
IN
-V
O
, V
O
ramp down
1.7
2.5
V
V
sc_dly
Short circuit detection delay during start up
32
ms
Fault OUTPUT
V
fault_high
Fault high voltage
Measured as V
BAT
–
V
Fault
0.1
V
V
fault_low
Fault low voltage
Measured as V
BAT
–
V
Fault
, sink 0.1mA, Vin
6
8
10
V
= 15 V
THERMAL SHUTDOWN
T
shutdown
Thermal shutdown threshold
160
°
C
T
hysteresis
Thermal shutdown threshold hysteresis
15
°
C
4
Copyright
©
2011, Texas Instruments Incorporated
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