The TPS780 family of low-dropout (LDO) regulators offer the benefits of ultralow power, miniaturized packaging, and selectable dual-level output voltage levels with the VSET pin.
The ultralow-power and dynamic voltage scaling (DVS) capability which provides dual-level output voltages let designers customize power consumption for specific applications. Designers can now shift to a lower voltage level in a battery-powered design when the microprocessor is in sleep mode, further reducing overall system power consumption. The two voltage levels are preset at the factory and are stored using EPROM and are available on fixed output voltage devices.
The TPS780 series of LDOs are designed to be compatible with the TI MSP430 and other similar products. The enable pin is compatible with standard CMOS logic. The TPS780 series also come with thermal shutdown and current limit to protect the device during fault conditions. All packages have an operating temperature range of TJ = –40°C to 125°C. For more cost-sensitive applications requiring a dual-level voltage option and only on par IQ, consider the TPS781 series, with an IQ of 1.0 μA and dynamic voltage scaling.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
TPS780xx | SOT (5) | 2.90 mm x 1.60 mm |
SON (6) | 2.00 mm x 2.00 mm |
Changes from D Revision (September 2012) to E Revision
Changes from C Revision (May 2008) to D Revision
PIN | I/O | DESCRIPTION | ||
---|---|---|---|---|
NAME | SON | SOT | ||
OUT | 1 | 5 | O | Regulated output voltage pin. A small (1-μF) ceramic capacitor is needed from this pin to ground to assure stability. See Input and Output Capacitor Requirements for more details. |
N/C | 2 | — | — | Not connected. |
VSET/FB | 3 | 4 | I | Feedback pin (FB) for adjustable versions; VSET for fixed voltage versions. Drive the select pin (VSET) below 0.4 V to select preset output voltage high. Drive the VSET pin over 1.2 V to select preset output voltage low. |
EN | 4 | 3 | I | Enable pin. Drive this pin over 1.2 V to turn on the regulator. Drive this pin below 0.4 V to put the regulator into shutdown mode, reducing operating current to 18 nA typical. |
GND | 5 | 2 | — | Ground pin. Tie all ground pins to ground for proper operation. |
IN | 6 | 1 | I | Input pin. A small capacitor is needed from this pin to ground to assure stability. A typical input capacitor is 1.0 μF. Tie back both input and output capacitor ground to the IC ground, with no significant impedance between them. |
Thermal pad | — | — | — | (SON package only) Connect the thermal pad to ground. |
MIN | MAX | UNIT | ||
---|---|---|---|---|
Voltage | VIN | –0.3 | +6.0 | V |
VEN and VVSET | –0.3 | VIN + 0.3(2) | ||
VOUT | –0.3 | VIN + 0.3 | ||
Current | IOUT | Internally limited | ||
Output short-circuit duration | Indefinite | |||
Total continuous power dissipation, PDISS | See Thermal Information | |||
Temperature | Operating junction, TJ | –40 | 125 | °C |
Storage, Tstg | –55 | 150 | °C |
VALUE | UNIT | |||
---|---|---|---|---|
V(ESD) | Electrostatic discharge | Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all pins(1) | ±2000 | V |
Charged device model (CDM), per JEDEC specification JESD22-C101, all pins(2) | ±500 |
MIN | NOM | MAX | UNIT | ||
---|---|---|---|---|---|
VIN | Input voltage | 2.2 | 5.5 | V | |
VOUT | Output voltage | 1.8 | 4.2 | V | |
VEN | Enable voltage | 0 | VIN | V | |
IOUT | Output current | 0 | 150 | mA | |
TJ | Junction temperature | –40 | 125 | °C |
THERMAL METRIC(1) | TPS780xx | UNIT | ||
---|---|---|---|---|
DDC | DRV | |||
5 PINS | 6 PINS | |||
RθJA | Junction-to-ambient thermal resistance | 193.0 | 65.9 | °C/W |
RθJC(top) | Junction-to-case (top) thermal resistance | 40.1 | 87.3 | |
RθJB | Junction-to-board thermal resistance | 34.3 | 35.4 | |
ψJT | Junction-to-top characterization parameter | 0.9 | 1.7 | |
ψJB | Junction-to-board characterization parameter | 34.1 | 35.8 | |
RθJC(bot) | Junction-to-case (bottom) thermal resistance | N/A | 6.1 |
PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | |||
---|---|---|---|---|---|---|---|---|
VIN | Input voltage range | 2.2 | 5.5 | V | ||||
VOUT(1) | DC output accuracy | Nominal | TJ = 25°C, VSET = high/low | –2% | ±1% | +2% | ||
Over VIN, IOUT, temperature | VOUT(nom) + 0.5 V ≤ VIN ≤ 5.5 V, 0 mA ≤ IOUT ≤ 150 mA, VSET = high/low |
–3.0% | ±2.0% | +3.0% | ||||
VFB | Internal reference(9)
(adjustable version only) |
TJ = 25°C, VIN = 4.0 V, IOUT = 75 mA | 1.216 | V | ||||
VOUT_RANGE | Output voltage range(2)(3)
(adjustable version only) |
VIN = 5.5 V, IOUT = 100 μA(9) | VFB | 5.25 | V | |||
ΔVOUT(ΔVIN) | Line regulation | VOUT(nom) + 0.5 V ≤ VIN ≤ 5.5 V, IOUT = 5 mA |
–1% | +1% | ||||
ΔVOUT(ΔIOUT) | Load regulation | 0 mA ≤ IOUT ≤ 150 mA | –2% | +2% | ||||
VDO | Dropout voltage(4) | VIN = 95% VOUT(nom), IOUT = 150 mA | 250 | mV | ||||
Vn | Output noise voltage | BW = 100 Hz to 100 kHz, VIN = 2.2 V, VOUT = 1.2 V, IOUT = 1 mA |
86 | μVRMS | ||||
VHI | VSET high (output VOUT(LO) selected), or EN high (enabled) | 1.2 | VIN | V | ||||
VLO | VSET low (output VOUT(HI) selected), or EN low (disabled) | 0 | 0.4 | V | ||||
ICL | Output current limit | VOUT = 0.90 × VOUT(nom) | 150 | 230 | 400 | mA | ||
IGND | Ground pin current | IOUT = 0 mA(5) | 420 | 800 | nA | |||
IOUT = 150 mA | 5 | μA | ||||||
ISHDN | Shutdown current (IGND) | VEN ≤ 0.4 V, 2.2 V ≤ VIN < 5.5 V, TJ = –40°C to 100°C |
18 | 130 | nA | |||
IVSET | VSET pin current | VEN = VVSET = 5.5 V | 70 | nA | ||||
IEN | EN pin current | VEN = VVSET = 5.5 V | 40 | nA | ||||
IFB | FB pin current(10)
(Adjustable version only) |
VIN = 5.5 V, VOUT = 1.2 V, IOUT = 100 μA | 10 | nA | ||||
PSRR | Power-supply rejection ratio | VIN = 4.3 V, VOUT = 3.3 V, IOUT = 150 mA |
f = 10 Hz | 40 | dB | |||
f = 100 Hz | 20 | |||||||
f = 1kHz | 15 | |||||||
tTR(H→L) | VOUT transition time (high-to-low) VOUT = 97% × VOUT(HI) |
VOUT_LOW = 2.2 V, VOUT(HI) = 3.3 V, IOUT = 10 mA |
800 | μs | ||||
tTR(L→H) | VOUT transition time (low-to-high) VOUT = 97% × VOUT(LO) |
VOUT_HIGH = 3.3 V, VOUT(LO) = 2.2 V, IOUT = 10 mA |
800 | μs | ||||
tSTR | Start-up time(6) | COUT = 1.0 μF, VOUT = 10% VOUT(nom) to VOUT = 90% VOUT(nom) | 500 | μs | ||||
tSHDN | Shutdown time(7) | IOUT = 150 mA, COUT = 1.0 μF, VOUT = 2.8 V, VOUT = 90% VOUT(nom) to VOUT = 10% VOUT(nom) |
500(8) | μs | ||||
TSD | Thermal shutdown temperature | Shutdown, temperature increasing | 160 | °C | ||||
Reset, temperature decreasing | 140 | °C | ||||||
TJ | Operating junction temperature | –40 | 125 | °C |
IOUT = 5 mA | VOUT(nom) = 1.22 V |
IOUT = 150 mA | VVSET = 1.2 V | VOUT(nom) = 2.2 V |
IOUT = 150 mA | VVSET = 0.4 V | VOUT(nom) = 3.3 V |
VVSET = 1.2 V | VIN = 2.7 V | VOUT(nom) = 2.2 V |
VOUT(nom) = 3.3 V | VIN = 0.95 × VOUT(nom) |
VOUT(nom) = 3.3 | VIN = 0.95 × VOUT(nom) |
IOUT = 50 mA | VOUT(nom) = 1.22 V |
IOUT = 0 mA | VVSET = 1.2 V | VOUT(nom) = 2.2 V |
IOUT = 50 mA | VVSET = 1.2 V | VOUT(nom) = 2.2 V |
IOUT = 0 mA | VVSET = 0.4 V | VOUT(nom) = 3.3 V |
IOUT = 50 mA | VVSET = 0.4 V | VOUT(nom) = 3.3 V |
VVSET = 1.2 V | VIN = 5.5 V | VOUT(nom) = 2.2 V |
IOUT = 0 mA | VVSET = 0.4 V |
VVSET = 1.2 V | VOUT = 95% VOUT(nom) | VOUT(nom) = 2.2 V |
IOUT = 0 mA | VOUT(nom) = 1.22 V |
IOUT = 100 μA | VVSET = 0.4 V | VOUT(nom) = 3.3 V |
IOUT = 100 μA | VVSET = 1.2 V | VOUT(nom) = 2.2 V |
IOUT = 1 mA |
IOUT = 1 mA | VIN = 3.8 V | VOUT(nom) = 3.3 V |
VVSET = 0.4 V | VIN = 3.8 V | VOUT(nom) = 3.3 V |
VIN = 2.7 V | VOUT = 1.2 V | COUT = 2.2 μF |
IOUT = 5 mA | VVSET = 1.2 V | VOUT(nom) = 2.2 V |
IOUT = 5 mA | VVSET = 0.4 V | VOUT(nom) = 3.3 V |
VOUT(nom) = 3.3 V |
VVSET = 0.4 V | VIN = 3.8 V | VOUT(nom) = 3.3 V |
VVSET = 0.4 V | VOUT(nom) = 3.3 V | VIN = 0.95 × VOUT(nom) |
VVSET = 0.4 V | VOUT(nom) = 3.3 V | VIN = 0.95 × VOUT(nom) |
IOUT = 150 mA | VOUT(nom) = 1.22 V |
IOUT = 1 mA | VVSET = 1.2 V | VOUT(nom) = 2.2 V |
IOUT = 150 mA | VVSET = 1.2 V | VOUT(nom) = 2.2 V |
IOUT = 1 mA | VVSET = 0.4 V | VOUT(nom) = 3.3 V |
IOUT = 150 mA | VVSET = 0.4 V | VOUT(nom) = 3.3 V |
VVSET = 0.4 V | VIN = 5.5 V | VOUT(nom) = 3.3 V |
VOUT = 90% VOUT(nom) | VOUT(nom) = 1.22 V |
VVSET = 0.4 V | VOUT = 95% VOUT(nom) | VOUT(nom) = 3.3 V |
IOUT = 100 μA | VVSET = 1.2 V | VOUT(nom) = 2.2 V |
IOUT = 1 mA | VOUT(nom) = 1.22 V |
IOUT = 100 μA | VVSET = 0.4 V | VOUT(nom) = 3.3 V |
IOUT = 1 mA |
VVSET = 1.2 V | VIN = 2.7 V | VOUT(nom) = 2.2 V |
CIN = 1 μF | COUT = 2.2 μF | VVSET = 1.2 V |
VIN = 2.7 V |