TPS717xx
www.ti.com
SBVS068C–FEBRUARY 2006–REVISED MARCH 2007
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
Input voltage range(1)
TEST CONDITIONS
MIN
2.5
TYP
MAX
6.5
UNIT
VIN
VFB
V
V
V
Internal reference (TPS71701)
Output voltage range (TPS71701)
0.790
0.9
0.800
0.810
VOUT
6.5 –
VDO
Nominal
TJ = +25°C, 1.6V ≤ VIN ≤ 6.5V
–0.05
–3.0
+0.06
%
%
VOUT
Output accuracy(1)
Over VIN, IOUT
,
VOUT + 0.5V ≤ VIN ≤ 6.5V
0mA ≤ IOUT ≤ 150mA
±1.5
+3.0
Temp(2)
VOUT(NOM) + 0.5V ≤ VIN ≤ 6.5V,
IOUT = 5mA
(1)
∆VOUT%/ ∆VIN Line regulation
125
120
µV/V
∆VOUT%/
∆IOUT
Load regulation
0mA ≤ IOUT ≤ 150mA
µV/mA
Dropout voltage(3)
(VIN = VOUT(NOM) – 0.1V)
VDO
ICL
IOUT = 150mA
170
300
mV
Output current limit
VOUT = 0.9 × VOUT(NOM)
IOUT = 0.1mA
200
325
50
500
80
mA
µA
µA
IGND
Ground pin current
IOUT = 150mA
100
V
EN ≤ 0.4V, 2.5V ≤ VIN < 4.5V,
0.20
0.90
1.5
1.0
µA
µA
TJ = –40°C to +85°C
Shutdown current
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
f = 100Hz
f = 1kHz
70
dB
Power-supply rejection ratio
VIN = 3.8V, VOUT = 2.8V,
IOUT = 150mA
PSRR
f = 10kHz
67
dB
f = 100kHz
67
dB
f = 1MHz
45
dB
CNR = none
95 × VOUT
25 × VOUT
12.5 × VOUT
11.5 × VOUT
0.700
µVRMS
µVRMS
µVRMS
µVRMS
ms
Output noise voltage
BW = 100Hz to 100kHz,
VIN = 3.8V, VOUT = 2.8V,
IOUT = 10mA
CNR = 0.001µF
CNR = 0.01µF
CNR = 0.1µF
0.9V ≤ VOUT ≤ 1.6V, CNR = 0.001µF
VN
Startup time
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.
3
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