The TPS61087-Q1 is a high-frequency, high-efficiency DC-to-DC converter with an integrated 3.2‑A, 0.13-Ω power switch that is capable of providing an output voltage up to 18.5 V. The selectable frequency of 650 kHz or 1.2 MHz allows the use of small external inductors and capacitors, and provides fast transient response. The external compensation allows optimizing the application for specific conditions. A capacitor connected to the soft-start pin minimizes inrush current at start-up.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
TPS61087-Q1 | VSON (10) | 3.00 mm x 3.00 mm |
Changes from B Revision (June 2020) to C Revision
Changes from A Revision (June 2016) to B Revision
Changes from * Revision (December 2011) to A Revision
PIN | I/O | DESCRIPTION | |
---|---|---|---|
NAME | NO. | ||
COMP | 1 | I/O | Compensation pin |
FB | 2 | I | Feedback pin |
EN | 3 | I | Shutdown control input. Connect this pin to logic high level to enable the device |
AGND | 4 | — | Analog ground |
PGND | 5 | — | Power ground |
SW | 6, 7 | I | Switch pin |
IN | 8 | I | Input supply pin |
FREQ | 9 | I | Frequency select pin. The power switch operates at 650 kHz if FREQ is connected to GND and at 1.2 MHz if FREQ is connected to IN. |
SS | 10 | O | Soft-start control pin. Connect a capacitor to this pin if soft start is needed. Open = no soft start |
Thermal Pad | — | Ground |
MIN | MAX | UNIT | ||
---|---|---|---|---|
Input voltage range(2) | IN | –0.3 | 7 | V |
Voltage range | EN, FB, SS, FREQ, COMP | –0.3 | 7 | V |
SW | –0.3 | 20 | ||
Operating junction temperature, TJ | –40 | 150 | °C | |
Storage temperature, Tstg | –65 | 150 | °C |
VALUE | UNIT | |||
---|---|---|---|---|
V(ESD) | Electrostatic discharge | Human-body model (HBM), per AEC Q100-002(1) | ±2000 | V |
Charged-device model (CDM), per AEC Q100-011 | ±1000 |
MIN | MAX | UNIT | ||
---|---|---|---|---|
VIN | Input voltage range | 2.5 | 6 | V |
VS | Boost output voltage range | VIN + 0.5 | 18.5 | V |
TA | Operating free-air temperature | –40 | 125 | °C |
THERMAL METRIC(1) | TPS61087-Q1 | UNIT | ||
---|---|---|---|---|
DRC (VSON) | WDRC (VSON) | |||
10 PINS | 10 PINS | |||
RθJA | Junction-to-ambient thermal resistance | 57 | 51.8 | °C/W |
RθJC(top) | Junction-to-case (top) thermal resistance | 84.5 | 81.3 | °C/W |
RθJB | Junction-to-board thermal resistance | 31.5 | 26.2 | °C/W |
ψJT | Junction-to-top characterization parameter | 5.9 | 4.4 | °C/W |
ψJB | Junction-to-board characterization parameter | 31.6 | 26.4 | °C/W |
RθJC(bot) | Junction-to-case (bottom) thermal resistance | 13 | 7.6 | °C/W |
PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | |
---|---|---|---|---|---|---|
SUPPLY | ||||||
VIN | Input voltage range | 2.5 | 6 | V | ||
IQ | Operating quiescent current into IN pin | Device not switching, VFB = 1.3 V | 75 | 100 | μA | |
ISDVIN | Shutdown current into IN pin | EN = GND | 4 | μA | ||
VUVLO | Undervoltage lockout threshold | VIN falling | 2.4 | V | ||
VIN rising | 2.5 | V | ||||
TSD | Thermal shutdown | Temperature rising | 150 | °C | ||
TSDHYS | Thermal shutdown hysteresis | 14 | °C | |||
LOGIC SIGNALS EN, FREQ | ||||||
VIH | High level input voltage | VIN = 2.5 V to 6 V | 2 | V | ||
VIL | Low level input voltage | VIN = 2.5 V to 6 V | 0.5 | V | ||
IINLEAK | Input leakage current | EN = FREQ = GND | 0.1 | μA | ||
BOOST CONVERTER | ||||||
VS | Boost output voltage | VIN + 0.5 | 18.5 | V | ||
VFB | Feedback regulation voltage | 1.23 | 1.238 | 1.25 | V | |
gm | Transconductance error amplifier | 107 | μA/V | |||
IFB | Feedback input bias current | VFB = 1.238 V | 0.1 | μA | ||
rDS(on) | N-channel MOSFET on-resistance | VIN = VGS = 5 V, ISW = current limit | 0.13 | 0.18 | Ω | |
VIN = VGS = 3 V, ISW = current limit | 0.16 | 0.23 | ||||
ISWLEAK | SW leakage current | EN = GND, VSW = VIN = 6 V | 2 | μA | ||
ILIM | N-Channel MOSFET current limit | 3.2 | 4 | 4.8 | A | |
ISS | Soft-start current | VSS = 1.238 V | 7 | 10 | 13 | μA |
fS | Oscillator frequency | FREQ = VIN | 0.9 | 1.2 | 1.5 | MHz |
FREQ = GND | 480 | 650 | 820 | kHz | ||
Line regulation | VIN = 2.5 V to 6 V, IOUT = 10 mA | 0.0002 | %/V | |||
Load regulation | VIN = 5 V, IOUT = 1 mA to 1 A | 0.11 | %/A |