Datasheet

TPS7A7100
SBVS189E –MARCH 2012–REVISED SEPTEMBER 2013 www.ti.com
ELECTRICAL CHARACTERISTICS
Over operating temperature range (T
J
= –40°C to +125°C), 1.425 V ≤ V
IN
≤ 6.5 V, V
IN
≥ V
OUT(TARGET)
+ 0.3 V or
V
IN
≥ V
OUT(TARGET)
+ 0.5 V
(1)(2)
, OUT connected to 50 Ω to GND
(3)
,V
EN
= 1.1 V, C
OUT
= 10 μF, C
SS
= 10 nF, C
FF
= 0 pF (RGW
package), C
FF
= 220 pF (RGT package)
(4)
, and PG pin pulled up to V
IN
with 100 kΩ, 27 kΩ ≤ R2 ≤ 33 kΩ for adjustable
configuration
(5)
, unless otherwise noted.
Typical values are at T
J
= +25°C.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
IN
Input voltage range 1.425 6.5 V
V
(SS)
SS pin voltage 0.5 V
Output voltage range Adjustable with external feedback resistors 0.9 5.0
V
Fixed with voltage setting pins 0.9 3.5
RGT package only, adjustable, –40°C ≤ T
A
≤ +85°C,
–1.5 +1.5
25 mA ≤ I
OUT
≤ 1 A
V
OUT
RGT package only, fixed, –40°C ≤ T
A
≤ +85°C,
–2.0 +2.0
Output voltage accuracy
(6)(7)
%
25 mA ≤ I
OUT
≤ 1 A
Adjustable, 25 mA ≤ I
OUT
≤ 1 A –2.0 +2.0
Fixed, 25 mA ≤ I
OUT
≤ 1 A –3.0 +3.0
ΔV
O(ΔVI)
Line regulation I
OUT
= 25 mA 0.01 %/V
ΔV
O(ΔIO)
Load regulation 25 mA ≤ I
OUT
≤ 1 A 0.1 %/A
V
OUT
≤ 3.3 V, I
OUT
= 1 A, V
(FB)
= GND 140 mV
V
(DO)
Dropout voltage
(8)
3.3 V < V
OUT
, I
OUT
= 1 A, V
(FB)
= GND 350 mV
V
OUT
forced at 0.9 × V
OUT(TARGET)
, V
IN
= 3.3 V,
I
(LIM)
Output current limit 1.1 1.6 A
V
OUT(TARGET)
= 0.9 V
Full load, I
OUT
= 1 A 1.8 mA
Minimum load, 4 mA
I
(GND)
GND pin current V
IN
= 6.5 V, V
OUT(TARGET)
= 0.9 V, I
OUT
= 25 mA
Shutdown, PG = (open), 0.1 5 μA
V
IN
= 6.5 V, V
OUT(TARGET)
= 0.9 V, V
(EN)
< 0.5 V
I
(EN)
EN pin current V
IN
= 6.5 V, V
(EN)
= 0 V and 6.5 V ±0.1 μA
EN pin low-level input voltage
V
IL(EN)
0 0.5 V
(disable device)
EN pin high-level input voltage
V
IH(EN)
1.1 6.5 V
(enable device)
V
IT(PG)
PG pin threshold For the direction PG↓ with decreasing V
OUT
0.85V
OUT
0.9V
OUT
0.96V
OUT
V
V
hys(PG)
PG pin hysteresis For PG↑ 0.02V
OUT
V
V
OL(PG)
PG pin low-level output voltage V
OUT
< V
IT(PG)
, I
PG
= –1 mA (current into device) 0.4 V
I
lkg(PG)
PG pin leakage current V
OUT
> V
IT(PG)
, V
(PG)
= 6.5 V 1 μA
I
(SS)
SS pin charging current V
(SS)
= GND, V
IN
= 3.3 V 3.5 5.1 7.2 μA
BW = 100 Hz to 100 kHz,
V
n
Output noise voltage 39.57 μV
RMS
V
IN
= 1.5 V, V
OUT
= 1.2 V, I
OUT
= 1 A
Shutdown, temperature increasing +160 °C
T
sd
Thermal shutdown temperature
Reset, temperature decreasing +140 °C
T
J
Operating junction temperature –40 +125 °C
(1) When V
OUT
≤ 3.5 V, V
IN
≥ (V
OUT
+ 0.3 V) or 1.425 V, whichever is greater; when V
OUT
> 3.5 V, V
IN
≥ (V
OUT
+ 0.5 V).
(2) V
OUT(TARGET)
is the calculated target V
OUT
value from the output voltage setting pins: 50mV, 100mV, 200mV, 400mV, 800mV, and 1.6V
in fixed configuration, or the expected V
OUT
value set by external feedback resistors in adjustable configuration.
(3) This 50-Ω load is disconnected when the test conditions specify an I
OUT
value.
(4) C
FF
is the capacitor between FB pin and OUT.
(5) R2 is the bottom-side of the feedback resistor between the FB pin and GND. See for details.
(6) When the TPS7A7100 is connected to external feedback resistors at the FB pin, external resistor tolerances are not included.
(7) The TPS7A7100 is not tested at V
OUT
= 0.9 V, 2.7 V ≤ V
IN
≤ 6.5 V, and 500 mA ≤ I
OUT
≤ 1 A because the power dissipation is higher
than the maximum rating of the package. Also, this accuracy specification does not apply on any application condition that exceeds the
power dissipation limit of the package.
(8) V
(DO)
is not defined for output voltage settings below 1.2 V.
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