TPS7A470
Every spec below is cited to the manufacturer datasheet. Pick your exact ordering code, compare the closest alternatives, then ask the assistant what it means for your design.
What the TPS7A470 family does
The TPS7A47xx family comprises 36-V, 1-A, ultralow-noise low-dropout linear regulators available in TPS7A4700 and TPS7A4701 variants. These devices feature 4-µV RMS output voltage noise, 82 dB power-supply ripple rejection at 100 Hz, and a 307 mV dropout voltage at full load. The TPS7A4700 offers user-programmable output voltages via PCB layout, while the TPS7A4701 supports both programmable and adjustable modes up to 34 V. Designed with bipolar technology for high precision, these regulators are ideal for powering operational amplifiers, ADCs, and DACs in medical, RF, audio, and instrumentation applications. They also serve effectively for post DC-DC converter regulation and filtering in telecom infrastructure and base stations.
TPS7A4700 datasheet parameters
| Parameter | Min | Typ | Max | Conditions | Source |
|---|---|---|---|---|---|
| quiescent current | — | 580 µA | — | IOUT = 0 µA, VI = 5 V, TJ = 25 °C | TI datasheet, p. 8 |
| output voltage | 1.4 V | — | 20.5 V | VI≥ VO(nom)+ 1.0 V or 3 V (whichever is greater), COUT = 20 μF; vo; 6.5 Electrical Characteristics | TI datasheet, p. 7 — 6.5 Electrical Characteristics |
| output current | 0 A | — | 1 A | io; over junction temperature range (unless otherwise noted) | TI datasheet, p. 6 — over junction temperature range (unless otherwise noted) |
| supply voltage range | 3 V | — | 35 V | vi; 6.5 Electrical Characteristics | TI datasheet, p. 7 — 6.5 Electrical Characteristics |
| abs max voltage (abs max) | -400 mV | — | 36 V | TI datasheet, p. 5 — 6.1 Absolute Maximum Ratings | |
| operating temperature | -40 °C | — | 125 °C | TI datasheet, p. 1 | |
| standby current | — | 2.2 µA | — | EN disabled (shutdown), VI = 5 to 35 V, TJ = 25 °C | TI datasheet, p. 9 |
| psrr | — | 78 dB | — | VI = 16 V, VO(nom) = 15 V, COUT = 50 μF, IO = 500 mA, CNR = 1 μF, f = 1 kHz; psrr; 6.5 Electrical Characteristics | TI datasheet, p. 7 — 6.5 Electrical Characteristics |
| dropout voltage | — | 307 mV | 450 mV | VI = 95% VO(nom), IO = 1 A; v(do); 6.5 Electrical Characteristics | TI datasheet, p. 7 — 6.5 Electrical Characteristics |
| output noise voltage | — | 4.17 µV | — | VI = 3 V, VO(nom) = 1.4 V, COUT = 50 μF, CNR = 1 μF, BW = 10 Hz to 100 kHz; vn; 6.5 Electrical Characteristics | TI datasheet, p. 7 — 6.5 Electrical Characteristics |
| output count | — | 1 | — | Single LDO output (OUT pins 1, 20) | TI datasheet, p. 5 — Pin Functions (continued) |
TPS7A4700 frequently asked questions
What is the absolute maximum voltage rating for the TPS7A4700?
The absolute maximum voltage is 36 V.
What is the dropout voltage when VI = 95% VO(nom) and IO = 1 A?
The dropout voltage is 307 mV.
What is the maximum operating temperature for the TPS7A4700?
The maximum operating temperature is 125 °C.
What is the output count for the TPS7A4700?
The output count is 1 for a Single LDO output (OUT pins 1, 20).
What is the output current specification for the TPS7A4700?
The output current is 1 A at io over the junction temperature range (unless otherwise noted).
What is the output noise voltage when VI = 3 V, VO(nom) = 1.4 V, COUT = 50 μF, CNR = 1 μF, and BW = 10 Hz to 100 kHz?
The output noise voltage is 4.17 µV.
What is the output voltage when VI≥ VO(nom)+ 1.0 V or 3 V (whichever is greater) and COUT = 20 μF?
The output voltage is 20.5 V.
What is the PSRR value when VI = 16 V, VO(nom) = 15 V, COUT = 50 μF, IO = 500 mA, CNR = 1 μF, and f = 1 kHz?
The PSRR is 78 dB.
What is the quiescent current of the TPS7A4700 when IOUT = 0 µA, VI = 5 V, and TJ = 25 °C?
The quiescent current is 580 µA under the conditions of IOUT = 0 µA, VI = 5 V, and TJ = 25 °C.
What is the standby current when the EN pin is disabled (shutdown), VI is 5 to 35 V, and TJ is 25 °C?
The standby current is 2.2 µA.
What is the supply voltage range (vi) for the TPS7A4700 as listed in the 6.5 Electrical Characteristics?
The supply voltage range (vi) is 35 V.
TPS7A4701 datasheet parameters
| Parameter | Min | Typ | Max | Conditions | Source |
|---|---|---|---|---|---|
| quiescent current | — | 580 µA | — | IOUT = 0 µA, VI = 5 V, TJ = 25 °C | TI datasheet, p. 8 |
| output voltage | 1.4 V | — | 20.5 V | VI≥ VO(nom)+ 1.0 V or 3 V (whichever is greater), COUT = 20 μF; vo; 6.5 Electrical Characteristics | TI datasheet, p. 7 — 6.5 Electrical Characteristics |
| output current | 0 A | — | 1 A | io; over junction temperature range (unless otherwise noted) | TI datasheet, p. 6 — over junction temperature range (unless otherwise noted) |
| supply voltage range | 3 V | — | 35 V | vi; 6.5 Electrical Characteristics | TI datasheet, p. 7 — 6.5 Electrical Characteristics |
| abs max voltage (abs max) | -400 mV | — | 36 V | TI datasheet, p. 5 — 6.1 Absolute Maximum Ratings | |
| operating temperature | -40 °C | — | 125 °C | TI datasheet, p. 1 | |
| standby current | — | 2.2 µA | — | EN disabled (shutdown), VI = 5 to 35 V, TJ = 25 °C | TI datasheet, p. 9 |
| psrr | — | 78 dB | — | VI = 16 V, VO(nom) = 15 V, COUT = 50 μF, IO = 500 mA, CNR = 1 μF, f = 1 kHz; psrr; 6.5 Electrical Characteristics | TI datasheet, p. 7 — 6.5 Electrical Characteristics |
| dropout voltage | — | 307 mV | 450 mV | VI = 95% VO(nom), IO = 1 A; v(do); 6.5 Electrical Characteristics | TI datasheet, p. 7 — 6.5 Electrical Characteristics |
| output noise voltage | — | 4.17 µV | — | VI = 3 V, VO(nom) = 1.4 V, COUT = 50 μF, CNR = 1 μF, BW = 10 Hz to 100 kHz; vn; 6.5 Electrical Characteristics | TI datasheet, p. 7 — 6.5 Electrical Characteristics |
| output count | — | 1 | — | Single LDO output (OUT pins 1, 20) | TI datasheet, p. 5 — Pin Functions (continued) |
TPS7A4701 frequently asked questions
What is the absolute maximum voltage rating for the TPS7A4701?
The absolute maximum voltage is 36 V.
What is the dropout voltage (v(do)) when VI = 95% VO(nom) and IO = 1 A?
The dropout voltage is 307 mV.
What is the maximum operating temperature for the TPS7A4701?
The maximum operating temperature is 125 °C.
How many outputs does the TPS7A4701 have?
The TPS7A4701 has 1 output, which is a Single LDO output (OUT pins 1, 20).
What is the output current (io) of the TPS7A4701 over the junction temperature range?
The output current is 1 A over the junction temperature range (unless otherwise noted).
What is the output noise voltage when VI = 3 V, VO(nom) = 1.4 V, COUT = 50 μF, CNR = 1 μF, and BW = 10 Hz to 100 kHz?
The output noise voltage is 4.17 µV.
What is the output voltage when VI≥ VO(nom)+ 1.0 V or 3 V (whichever is greater) and COUT = 20 μF?
The output voltage is 20.5 V.
What is the PSRR value at f = 1 kHz?
The PSRR is 78 dB when VI = 16 V, VO(nom) = 15 V, COUT = 50 μF, IO = 500 mA, and CNR = 1 μF.
What is the quiescent current of the TPS7A4701 when IOUT = 0 µA, VI = 5 V, and TJ = 25 °C?
The quiescent current is 580 µA.
What is the standby current when EN is disabled (shutdown), VI is 5 to 35 V, and TJ is 25 °C?
The standby current is 2.2 µA.
What is the supply voltage range (vi) for the TPS7A4701 as listed in the 6.5 Electrical Characteristics?
The supply voltage range (vi) is 35 V.