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TPPM0111 Arkusz danych(PDF) 4 Page - Texas Instruments

Numer części TPPM0111
Szczegółowy opis  DUAL LOW - DROPOUT LINEAR REGULATOR
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Strona internetowa  http://www.ti.com
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TPPM0111 Arkusz danych(HTML) 4 Page - Texas Instruments

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TPPM0111
DUAL LOW DROPOUT LINEAR REGULATOR
SLVS414 − DECEMBER 2001
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics, TA = 0°C to 55°C, CL = 100 µF, V(5VCC) = 5 V (unless otherwise noted)
The operating ratings specified below is interpreted as conditions that do not degrade the device’s parametric
or functional specifications for the life of the product.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
V(5VCC)
Input voltage
4.7
5
5.3
V
I(Q)
Quiescent supply current
IO(3.3VOUT) = 1.2 A and
IO(1.5VOUT) = 300 mA
1
mA
I(Q)
Quiescent supply current
With no loads on outputs
600
µA
IO
Output load current
3.3VOUT = 3.3 V
±3%
1.5
A
IO
Output load current
1.5VOUT = 1.5 V
±2%
300
mA
V(3.3VOUT)
3.3-V output
IO = 1 mA to 1.2 A
3.23
3.33
3.43
V
V(1.5VOUT)
1.5-V output
IO = 1 mA to 250 mA
1.47
1.5
1.53
V
V(DO)
Regulator drop-out
3.3VOUT
IO < 1.2 A
1
V
V(DO)
Regulator drop-out
voltage
1.5VOUT
IO < 250 mA
2.8
V
I(3.3VOUT)OC
Overcurrent protection
3.3VOUT, IL↑, See Note 4
2.25
3
5.4
A
I(3.3VOUT)OC
Overcurrent protection
Hysteresis
500
mA
I(1.5VOUT)OC
Overcurrent protection
1.5VOUT, See Note 4
0.45
0.6
1.08
A
I(1.5VOUT)OC
Overcurrent protection
Hysteresis
200
mA
CL
Load capacitance for both
regulated outputs
100
µF
ESR(CL)
Equivalent series resistance
1
Vth
Threshold voltage
5 V
↓, IO(3.3VOUT)= 1.2 A,
IO(1.5VOUT) = 250 mA
3.4
4.2
V
Vth
Threshold voltage
Hysteresis
250
mV
TTSD†
Thermal shutdown hysteresis
Temperature
150
180
°C
TTSD†
Thermal shutdown hysteresis
Hysteresis
15
°C
† Design targets only. Not tested in production.
NOTE 4: In the event of an overcurrent condition, the output should be a constant current limit such that the current never exceeds 360% of
IO(TYP). Once the overcurrent condition is removed, the device returns to within the specified regulation limits.
electrical characteristics, TA = 0°C to 55°C, CL = 100 µF, V(5VCC) = 5 V (unless otherwise noted)
The following parametric requirements are applicable to both 3.3VOUT and 1.5VOUT when subjected to these
transient tests.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
V(OTL)
Output transient voltage limit
Voltage that load step can affect nominal output
voltage (see Note 5)
−3%
3%
IO(STEP)
Output load step current
See Note 5
0
IO(TYP)
A
IO(SLEW)
Output load step current slew rate
See Note 5 and 6
8
A/
µs
t(STEP)
Output transient time limit
See Note 5
10
µs
Power up overshoot
Maximum voltage overshoot allowed on either
output when component begins regulation. Voltage
transient time limit is t(STEP) (see Note 5)
7
%
† Design targets only. Not tested in production..
NOTES:
5. Both outputs must maintain voltage regulation within
±3% of nominal, for a load step from 0 to IO(TYP) and from IO(TYP) to 0 A with
a current slew rate of 8A/ms. Load may be toggled at a rate of 20 kHz typical. The outputs must return to the specified regulation
limits within the specified time of 10
µs (typical).
6. Both linear regulators must be capable of regulating small ESR ceramic capacitors or aluminum electrolytic capacitors (see ESR
specification).


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