TPS717xx
www.ti.com ..................................................................................................................................................... SBVS068E–FEBRUARY 2006–REVISED MAY 2008
ELECTRICAL CHARACTERISTICS
Over operating temperature range (TJ = –40°C to +125°C), VIN = VOUT(TYP) + 0.5V or 2.5V, whichever is greater;
IOUT = 0.5mA, VEN = VIN, COUT = 1.0µF, CNR = 0.01µF, unless otherwise noted. For TPS71701, VOUT = 2.8V.
Typical values are at TJ = +25°C.
PARAMETER
TEST CONDITIONS
MIN
2.5
TYP
MAX
6.5
UNIT
V
VIN
VFB
Input voltage range(1)
Internal reference (TPS71701)
Output voltage range (TPS71701)
Nominal
0.790
0.9
0.800
0.810
V
VOUT
6.5 – VDO
+0.06
V
TJ = +25°C, 1.6V ≤ VIN ≤ 6.5V
–0.05
%
VOUT
Output accuracy(1)
Over VIN, IOUT
,
VOUT + 0.5V ≤ VIN ≤ 6.5V
0mA ≤ IOUT ≤ 150mA
–3.0
±1.5
+3.0
%
Temp(2)
VOUT(NOM) + 0.5V ≤ VIN ≤ 6.5V,
IOUT = 5mA
(1)
ΔVOUT/ ΔVIN Line regulation
ΔVOUT/ ΔIOUT Load regulation
125
120
170
325
325
µV/V
µV/mA
mV
0mA ≤ IOUT ≤ 150mA
Dropout voltage(3)
(VIN = VOUT(NOM) – 0.1V)
VDO
IOUT = 150mA
300
500
575
80
ICL (Fixed)
Output current limit (fixed output)
VOUT = 0.9 × VOUT(NOM)
VOUT = 0.9 × VOUT(NOM)
200
200
mA
ICL
Output current limit (TPS71701)
mA
(Adjustable)
IOUT = 0.1mA
IOUT = 150mA
50
µA
µA
IGND
Ground pin current
Shutdown current
100
VEN ≤ 0.4V, 2.5V ≤ VIN < 4.5V,
0.20
0.90
1.5
1.0
µA
µA
TJ = –40°C to +85°C
ISHDN
(IGND
)
VEN ≤ 0.4V, 4.5V ≤ VIN ≤ 6.5V,
TJ = –40°C to +85°C
IFB
Feedback pin current (TPS71701)
0.02
70
µA
dB
dB
dB
dB
dB
f = 100Hz
f = 1kHz
70
Power-supply rejection ratio
VIN = 3.8V, VOUT = 2.8V,
IOUT = 150mA
PSRR
f = 10kHz
f = 100kHz
f = 1MHz
67
67
45
CNR = none
(fixed output, TPS71701)
95 × VOUT
µVRMS
Output noise voltage
BW = 100Hz to 100kHz,
VIN = 3.8V, VOUT = 2.8V,
IOUT = 10mA
CNR = 0.001µF
25 × VOUT
12.5 × VOUT
11.5 × VOUT
0.700
µVRMS
µVRMS
µVRMS
ms
VN
CNR = 0.01µF
CNR = 0.1µF
Startup time
0.9V ≤ VOUT ≤ 1.6V, CNR = 0.001µF
TSTR
VOUT = 90% VOUT(NOM),
RL = 19Ω, COUT = 1.0µF
1.6V < VOUT < VMAX, CNR = 0.01µF
0.160
ms
V
IN ≤ 5.5V
1.2
1.25
0
6.5
6.5
0.4
V
V
V
Enable high
(enabled)
VEN(HI)
VEN(LO)
5.5V < VIN ≤ 6.5V
Enable low
(shutdown)
IEN(HI)
UVLO
Enable pin current, enabled
Under-voltage lockout
Hysteresis
EN = 6.5V
0.02
2.45
150
1.0
µA
V
VIN rising
2.41
–40
2.49
VIN falling
mV
°C
°C
°C
Shutdown, temperature increasing
Reset, temperature decreasing
+160
+140
TSD
TJ
Thermal shutdown temperature
Operating junction temperature
+125
(1) Minimum VIN = VOUT + VDO or 2.5V, whichever is greater.
(2) Does not include external resistor tolerances.
(3) VDO is not measured for devices with VOUT(NOM) < 2.6V because minimum VIN = 2.5V.
Copyright © 2006–2008, Texas Instruments Incorporated
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