The TPS7A7002 is a high-performance, positive- voltage, low-dropout (LDO) regulator designed for use in applications requiring very-low input voltage and very-low dropout voltage at up to 3 A. The device operates with a single input voltage as low as
1.425 V, and with an output voltage programmable to as low as 0.5 V. The output voltage can be set using an external divider.
The TPS7A7002 features ultra-low dropout, ideal for applications where VOUT is very close to VIN. Additionally, the TPS7A7002 has an enable pin for further reduced power dissipation while in Shutdown mode. The TPS7A7002 provides excellent regulation over variations in line, load, and temperature.
The TPS7A7002 is available in an 8-pin SO PowerPAD™ package.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
TPS7A7002 | SO PowerPAD (8) | 3.90 mm × 4.89 mm |
Changes from C Revision (July 2015) to D Revision
Changes from B Revision (November 2013) to C Revision
Changes from A Revision (September 2013) to B Revision
Changes from * Revision (May 2013) to A Revision
PIN | I/O | DESCRIPTION | |
---|---|---|---|
NAME | NO. | ||
EN | 2 | I | Enable input. Pulling this pin to less than 0.5 V turns the regulator off. Connect to VIN if not being used. |
FB | 7 | I | This pin is the output voltage feedback input through voltage dividers. See Table 2 for more details. |
GND | 8 | — | Ground pin |
IN | 3 | I | Input pin. Although it is not required for stability, TI recommends connecting a 1-μF to 10-μF capacitor with low equivalent series resistance (ESR) across this pin and GND. |
NC | 1, 4, 5 | — | Not internally connected. The NC pins are not connected to any electrical node. TI recommends connecting the NC pins to large-area planes. |
OUT | 6 | O | Regulated output pin. A 4.7-μF or larger capacitor of any type is required for stability. |
PowerPAD | — | — | TI strongly recommends connecting the thermal pad to a large-area ground plane. If an electrically floating, dedicated thermal plane is available, the thermal pad can also be connected to it. |
MIN | MAX | UNIT | ||
---|---|---|---|---|
Voltage | IN | –0.3 | 7 | V |
EN, FB, OUT | –0.3 | VIN + 0.3(2) | ||
Current | OUT | Internally limited | A | |
Temperature | Operating virtual junction, TJ | –55 | 150 | °C |
Storage temperature, Tstg | –55 | 150 |
VALUE | UNIT | |||
---|---|---|---|---|
V(ESD) | Electrostatic discharge | Human body model (HBM), per ANSI/ESDA/JEDEC JS-001(1) | ±2000 | V |
Charged-device model (CDM), per JEDEC specification JESD22-C101(2) | ±500 |
MIN | NOM | MAX | UNIT | ||
---|---|---|---|---|---|
VIN | Input voltage | 1.425 | 6.5 | V | |
VEN | Enable pin voltage | 0 | VIN | V | |
CIN | Input capacitor | 1 | 10 | µF | |
COUT | Output capacitor(1)(2) | 4.7 | 10 | 200 | µF |
CFB | Feedforward capacitance | 0 | 100 | nF | |
IOUT | Output current | 0 | 3 | A | |
TJ | Junction temperature | –40 | 125 | °C |
THERMAL METRIC(1) | TPS7A7002 | UNIT | |
---|---|---|---|
DDA (SO PowerPAD) | |||
8 PINS | |||
RθJA | Junction-to-ambient thermal resistance | 46.4 | °C/W |
RθJC(top) | Junction-to-case (top) thermal resistance | 54.2 | °C/W |
RθJB | Junction-to-board thermal resistance | 29.9 | °C/W |
ψJT | Junction-to-top characterization parameter | 10.2 | °C/W |
ψJB | Junction-to-board characterization parameter | 29.8 | °C/W |
RθJC(bot) | Junction-to-case (bottom) thermal resistance | 6.8 | °C/W |
PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | ||
---|---|---|---|---|---|---|---|
INPUT VOLTAGE | |||||||
IGND | GND pin current | VIN = 3.3 V, 50-Ω load resistor between OUT and GND |
3 | mA | |||
Shutdown GND pin current | VIN = 6.5 V, VEN = 0 V | 5 | µA | ||||
OUTPUT VOLTAGE | |||||||
VOUT | Output voltage accuracy(2)(3) | VIN = VOUT + 0.5 V(4), IOUT = 10 mA | –2% | 2% | |||
VIN = 1.8 V, IOUT = 0.8 A, 0°C ≤ TJ = TA ≤ 85°C | –2% | 2% | |||||
IOUT = 10 mA | –3% | 3% | |||||
ΔVO(ΔVI) | Line regulation | IOUT = 10 mA | 0.2 | 0.4 | %/V | ||
ΔVO(ΔIO) | Load regulation(3) | 10 mA ≤ IOUT ≤ 3 A | 0.25 | 0.75 | %/A | ||
VDO | Dropout voltage (5) | IOUT = 1 A, 0.5 V ≤ VOUT ≤ 5 V | 200 | mV | |||
IOUT = 2 A, 0.5 V ≤ VOUT ≤ 5 V | 380 | ||||||
IOUT = 3 A, 0.5 V ≤ VOUT ≤ 4.8 V | 600 | ||||||
ICL | Output current limit | VIN = 1.425 V, VOUT = 0.9 × VOUT(NOM) | 3.36 | A | |||
FEEDBACK | |||||||
VREF | Reference voltage accuracy | VIN = 3.3 V, IOUT = 10 mA | 0.49 | 0.5 | 0.51 | V | |
IFB | FB pin current | VFB = 0.5 V | 1 | µA | |||
ENABLE | |||||||
IEN | EN pin current | VEN = 0 V, VIN = 3.3 V | 0.2 | µA | |||
VEN(LO) | EN pin input low (disable) | VIN = 3.3 V | 0 | 0.5 | V | ||
VEN(HI) | EN pin input high (enable) | VIN = 3.3 V | 1.1 | VIN | V | ||
TEMPERATURE | |||||||
TSD | Thermal shutdown temperature | Shutdown, temperature increasing | 160 | °C | |||
Reset, temperature decreasing | 140 |
COUT = 10 µF |
VIN = 5 V, VOUT = 3.3 V |
VOUT = 1.6 V |
COUT = 100 µF |
VOUT = 3.3 V |
VOUT = 1.4 V |