TPS7A3001-EP_15 Datasheet, PDF (4/25 Pages) Texas Instruments – –36V, –200mA, ULTRALOW-NOISE, NEGATIVE LINEAR REGULATOR

TPS7A3001-EP
SBVS174 – OCTOBER 2011
www.ti.com
ELECTRICAL CHARACTERISTICS⁽¹⁾
At T_J = –55°C to +125°C, |V_IN| = |V_OUT(NOM)| + 1.0V or |V_IN| = 3.0V (whichever is greater), V_EN = V_IN, I_OUT = 1mA, C_IN = 2.2µF, C_OUT = 2.2µF,
C_NR/SS = 0nF, and the FB pin tied to OUT, unless otherwise noted.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
V_IN
V_REF
V_OUT
Input voltage range
Internal reference
Output voltage range⁽²⁾
Nominal accuracy
Overall accuracy
DV_OUT(DV_IN)
V_OUT(NOM)
Line regulation
V_NR/SS = V_REF
|V_IN| ≥ |V_OUT(NOM)| + 1.0V
T_J = +25°C, |V_IN| = |V_OUT(NOM)| + 0.5V
|V_OUT(NOM)| + 1.0V ≤ |V_IN| ≤ 35V
1mA ≤ I_OUT ≤ 200mA
T_J = +25°C, |V_OUT(NOM)| + 1.0V ≤ |V_IN| ≤ 35V
–36.0
–1.22
–35.0
–1.5
–2.85
–1.184
–3.0
–1.142
V_REF
+1.5
V
V
V
%V_OUT
+2.85 %V_OUT
0.14
%V_OUT
DV_OUT(DI_OUT)
V_OUT(NOM)
Load regulation
T_J = +25°C, 1mA ≤ I_OUT ≤ 200mA
0.04
%V_OUT
|V_DO|
I_LIM
I_GND
|I_SHDN|
I _FB
|I_EN|
V_{+EN_HI}
V_{+EN_LO}
V_{–EN_HI}
V_{–EN_LO}
V_NOISE
PSRR
T_SD
T_J
Dropout voltage
Current limit
Ground current
Shutdown supply current
Feedback current⁽³⁾
V_IN = 95% V_OUT(NOM), I_OUT = 100mA
V_IN = 95% V_OUT(NOM), I_OUT = 200mA
V_OUT = 90% V_OUT(NOM)
I_OUT = 0mA
I_OUT = 100mA
V_EN = +0.4V
V_EN = –0.4V
Enable current
Positive enable high-level voltage
Positive enable low- level voltage
V_EN = |V_IN| = |V_OUT(NOM)| + 1.0V
V_IN = V_EN = –35V
V_IN = –35V, V_EN = +15V
T_J = –55°C to +125°C
Negative enable high-level voltage
Negative enable low- level voltage
Output noise voltage
V_IN = –3V, V_OUT(NOM) = V_REF, C_OUT = 10μF,
C_NR/SS = 10nF, BW = 10Hz to 100kHz
V_IN = –6.2V, V_OUT(NOM) = –5V, C_OUT = 10μF,
C_NR/SS = C_BYP(4) = 10nF, BW = 10Hz to
100kHz
Power-supply rejection ratio
Thermal shutdown temperature
V_IN = –6.2V, V_OUT(NOM) = –5V, C_OUT = 10μF,
C_NR/SS = C_BYP(4) = 10nF, f = 120Hz
Shutdown, temperature increasing
Reset, temperature decreasing
Operating junction temperature
range
220
+2.0
0
V_IN
–0.4
–55
216
325
330
55
950
1.0
1.0
14
0.48
0.51
0.50
15.1
17.5
72
+170
+150
mV
600 mV
500 mA
100 μA
μA
3.0 μA
3.0 μA
100 nA
1.0 μA
1.0 μA
1.2 μA
+15 V
+0.4 V
–2.0 V
0V
μV_RMS
μV_RMS
dB
°C
°C
+125 °C
(1) At operating conditions, V_IN ≤ 0V, V_OUT(NOM) ≤ V_REF ≤ 0V. At regulation, V_IN ≤ V_OUT(NOM) – |V_DO|. I_OUT > 0 flows from OUT to IN.
(2) To ensure stability at no load conditions, a current from the feedback resistive network equal to or greater than 5μA is required.
(3) I_FB > 0 flows into the device.
(4) C_BYP refers to a bypass capacitor connected to the FB and OUT pins.
4
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