The TPS61097A-33 provides a power supply solution for products powered by either a single-cell, two-cell, or three-cell alkaline, NiCd, or NiMH, or one-cell Li-Ion or Li-polymer battery. They can also be used in fuel cell or solar cell powered devices where the capability of handling low input voltages is essential. Possible output currents depend on the input-to-output voltage ratio. The devices provide output currents up to 100 mA at a 3.3-V output while using a single-cell Li-Ion or Li-Polymer battery. The boost converter is based on a current-mode controller using synchronous rectification to obtain maximum efficiency. The maximum average input current is limited to a value of 400 mA. The converter can be disabled to minimize battery drain. During shutdown, the battery is connected to the load to enable battery backup of critical functions on the load. The device is packaged in a 5-pin SOT-23 package (DBV) measuring 2.8 mm × 2.9 mm.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
TPS61097A-33 | SOT-23 (5) | 2.90 mm × 2.90 mm |
Changes from * Revision (January 2014) to A Revision
PIN | I/O | DESCRIPTION | |
---|---|---|---|
NO. | NAME | ||
1 | VIN | I | Boost converter input voltage. |
2 | GND | – | Control / logic ground. |
3 | EN | I | Enable input (1 = enabled, 0 = disabled). EN must be actively terminated high or low. |
4 | VOUT | O | Boost converter output. |
5 | L | I | Connection for inductor. |
MIN | MAX | UNIT | |||
---|---|---|---|---|---|
VI | Input voltage range | VIN | –0.3 | 7 | V |
L | –0.3 | 7 | |||
VOUT | –0.3 | 7 | |||
EN | –0.3 | 7 | |||
IMAX | Maximum continuous output current | 400 | mA | ||
TJ | Junction temperature range | –40 | 150 | °C | |
Tstg | Storage temperature range | –65 | 150 | °C |
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) | ±1000 |
MIN | MAX | UNIT | ||
---|---|---|---|---|
VIN | Input voltage range | 0.9 | 5.5 | V |
VEN | Enable voltage range | 0 | 5.5 | V |
TA | Operating free air temperature range | –40 | 85 | °C |
TJ | Operating junction temperature range | –40 | 125 | °C |
THERMAL METRIC(1) | TPS61097A-33 | UNIT | |
---|---|---|---|
DBV | |||
5 PINS | |||
θJA | Junction-to-ambient thermal resistance | 208.7 | °C/W |
θJCtop | Junction-to-case (top) thermal resistance | 124.5 | |
θJB | Junction-to-board thermal resistance | 36.9 | |
ψJT | Junction-to-top characterization parameter | 14.7 | |
ψJB | Junction-to-board characterization parameter | 36 |
PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | ||||
---|---|---|---|---|---|---|---|---|---|
DC/DC STAGE | |||||||||
VIN | Input voltage | 0.9 | 5.5 | V | |||||
VOUT | Output voltage | VIN = 1.2 V , IOUT = 10 mA | 3.20 | 3.30 | 3.40 | ||||
ISW | Switch current limit | VOUT = 3.3 V | 200 | 400 | 475 | mA | |||
Rectifying switch on resistance | VOUT = 3.3 V | 1.0 | Ω | ||||||
Main switch on resistance | VOUT = 3.3 V | 1.0 | |||||||
Bypass switch on resistance | VIN = 1.2 IOUT = 100 mA | 3.4 | |||||||
Line regulation | VIN < VOUT, VIN = 1.2 V to 1.8 V, IOUT = 10 mA | 0.5% | |||||||
Load regulation | VIN < VOUT, IOUT = 10 mA to 50 mA, VIN = 1.8 V | 0.5% | |||||||
IQ | Quiescent current | VIN | IOUT = 0 mA, VEN = VIN = 1.2 V, VOUT = 3.5 V | 2 | 4 | μA | |||
VOUT | 5 | 8 | |||||||
ISD | Shutdown current | VIN | VEN = 0 V, VIN = 1.2 V, IOUT = 0 mA | 0.005 | 0.15 | μA | |||
VEN = 0 V, VIN = 3 V, IOUT = 0 mA | 0.005 | 0.15 | |||||||
Leakage current into L | VEN = 0 V, VIN = 1.2 V, VL = 1.2 V | 0.01 | 1 | ||||||
CONTROL STAGE | |||||||||
EN input current | EN = 0 V or EN = VIN | 0.01 | 0.1 | μA | |||||
VIL | Logic low level, EN falling edge | 0.58 | V | ||||||
VIH | Logic high level, EN rising edge | 0.78 | VIN + 1.0 V | ||||||
OTP | Overtemperature protection | 150 | °C | ||||||
OTPHYST | Overtemperature hysteresis | 20 | |||||||
VUVLO | Undervoltage lock-out threshold for turn off | VIN decreasing | 0.6 | 0.8 | V |
Refer to Figure 19 for reference designators.