Datasheet

TPS79901-Q1, TPS79912-Q1, TPS79915-Q1
TPS79918-Q1, TPS79925-Q1, TPS79927-Q1, TPS79933-Q1
www.ti.com SBVS097E –MARCH 2008–REVISED JANUARY 2012
ELECTRICAL CHARACTERISTICS
over operating temperature range (T
J
= –40°C to 125°C), V
IN
= V
OUT(TYP)
+ 0.3 V or 2.7 V, whichever is greater; I
OUT
= 1 mA,
V
EN
= V
IN
, C
OUT
= 2.2 μF, C
NR
= 0.01 μF (unless otherwise noted) For TPS79901, V
OUT
= 3.0 V. Typical values are at
T
J
= 25°C.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
IN
Input voltage range
(1)
2.7 6.5 V
V
FB
Internal reference (TPS79901) 1.169 1.193 1.217 V
Output voltage range
V
OUT
V
FB
6.5 – V
DO
V
(TPS79901)
V
OUT
Output accuracy Nominal, T
J
= 25°C –1.0 +1.0 %
Over V
IN
, I
OUT
, temperature,
V
OUT
Output accuracy
(1)
V
OUT
+ 0.3 V ≤ V
IN
≤ 6.5 V, –2.0 ±1.0 +2.0 %
500 μA ≤ I
OUT
≤ 200 mA
ΔV
OUT
%/ ΔV
IN
Line regulation
(1)
V
OUT(NOM)
+ 0.3 V ≤ V
IN
≤ 6.5 V 0.02 %/V
ΔV
OUT
%/ ΔI
OUT
Load regulation 500 μA ≤ I
OUT
≤ 200 mA 0.002 %/mA
V
OUT
< 3.3 V 100 175
Dropout voltage
(2)
V
DO
I
OUT
= 200 mA mV
(V
IN
= V
OUT(NOM)
– 0.1 V)
V
OUT
≥ 3.3 V 90 160
I
CL
Output current limit V
OUT
= 0.9 × V
OUT(NOM)
200 400 600 mA
I
GND
Ground pin current 500 μA ≤ I
OUT
≤ 200 mA 40 60 μA
I
SHDN
Shutdown current (I
GND
) V
EN
≤ 0.4 V, 2.7 V ≤ V
IN
≤ 6.5 V 0.15 1.0 μA
Feedback pin current
I
FB
–0.5 0.5 μA
(TPS79901)
f = 100 Hz 70
V
IN
= 3.85 V,
f = 1 kHz 66
V
OUT
= 2.85 V,
PSRR Power-supply rejection ratio dB
C
NR
= 0.01 μF,
f = 10 kHz 51
I
OUT
= 100 mA
f = 100 kHz 38
Output noise voltage C
NR
= 0.01 μF 10.5 V
OUT
V
N
BW = 10 Hz to 100 kHz, V
OUT
= μV
RMS
C
NR
= none 94 V
OUT
2.8 V
C
NR
= 0.001 μF 45
V
OUT
= 2.85 V,
C
NR
= 0.047 μF 45
T
STR
Startup time R
L
= 14 Ω, μs
C
NR
= 0.01 μF 50
C
OUT
= 2.2 μF
C
NR
= none 50
V
EN(HI)
Enable high (enabled) 1.2 V
IN
V
V
EN(LO)
Enable low (shutdown) 0 0.4 V
I
EN(HI)
Enable pin current, enabled V
EN
= V
IN
= 6.5 V 0.03 1.0 μA
Shutdown, temperature increasing 165 °C
TSD Thermal shutdown temperature
Reset, temperature decreasing 145 °C
T
J
Operating junction temperature –40 125 °C
V
UVLO
Undervoltage lock-out V
IN
rising 1.90 2.20 2.65 V
V
UVLO,hys
Hysteresis V
IN
falling 70 mV
(1) Minimum V
IN
= V
OUT
+ V
DO
or 2.7 V, whichever is greater.
(2) V
DO
is not measured for devices with V
OUT(NOM)
< 2.8 V because minimum V
IN
= 2.7 V.
DEVICE INFORMATION
FUNCTIONAL BLOCK DIAGRAMS
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Product Folder Links: TPS79901-Q1 TPS79912-Q1 TPS79915-Q1 TPS79918-Q1 TPS79925-Q1 TPS79927-Q1
TPS79933-Q1