The TPS6300x devices provide a power supply solution for products powered by either a two-cell or three-cell alkaline, NiCd or NiMH battery, or a one-cell Li-ion or Li-polymer battery. Output currents can go as high as 1200 mA while using a single-cell Li-ion or Li-polymer battery, and discharge it down to 2.5 V or lower. The buck-boost converter is based on a fixed frequency, pulse width modulation (PWM) controller using synchronous rectification to obtain maximum efficiency. At low load currents, the converter enters power-save mode to maintain high efficiency over a wide load current range. The power-save mode can be disabled, forcing the converter to operate at a fixed switching frequency. The maximum average current in the switches is limited to a typical value of 1800 mA. The output voltage is programmable using an external resistor divider, or is fixed internally on the chip. The converter can be disabled to minimize battery drain. During shutdown, the load is disconnected from the battery.
The TPS6300x devices operate over a free air temperature range of –40°C to 85°C. The devices are packaged in a 10-pin VSON package (QFN) measuring 3 mm × 3 mm (DRC).
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
TPS63000 | VSON (10) | 3.00 mm x 3.00 mm |
TPS63001 | ||
TPS63002 |
Changes from B Revision (August 2008) to C Revision
PIN | I/O | DESCRIPTION | |
---|---|---|---|
NAME | NO. | ||
EN | 6 | IN | Enable input (1 enabled, 0 disabled) |
FB | 10 | IN | Voltage feedback of adjustable versions, must be connected to VOUT on fixed output voltage versions |
GND | 9 | — | Control / logic ground |
L1 | 4 | IN | Connection for inductor |
L2 | 2 | IN | Connection for inductor |
PGND | 3 | — | Power ground |
PS/SYNC | 7 | IN | Enable / disable power-save mode (1 disabled, 0 enabled, clock signal for synchronization) |
VIN | 5 | IN | Supply voltage for power stage |
VINA | 8 | IN | Supply voltage for control stage |
VOUT | 1 | OUT | Buck-boost converter output |
Exposed Thermal Pad | — | — | The exposed thermal pad is connected to PGND. |
MIN | MAX | UNIT | |
---|---|---|---|
Input voltage on VIN, VINA, L1, L2, VOUT, PS/SYNC, EN, FB | –0.3 | 7 | V |
Operating virtual junction temperature, TJ | –40 | 150 | °C |
Storage temperature, Tstg | –65 | 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) | 1000 |
MIN | MAX | UNIT | ||
---|---|---|---|---|
Supply voltage at VIN, VINA | 1.8 | 5.5 | V | |
Operating free air temperature, TA | –40 | 85 | °C | |
Operating virtual junction temperature, TJ | –40 | 125 | °C |
THERMAL METRIC(1) | TPS6300x | UNIT | |
---|---|---|---|
DRC (VSON) | |||
10 PINS | |||
RθJA | Junction-to-ambient thermal resistance | 46.8 | °C/W |
RθJC(top) | Junction-to-case (top) thermal resistance | 62.5 | °C/W |
RθJB | Junction-to-board thermal resistance | 21.4 | °C/W |
ψJT | Junction-to-top characterization parameter | 1.4 | °C/W |
ψJB | Junction-to-board characterization parameter | 21.5 | °C/W |
RθJC(bot) | Junction-to-case (bottom) thermal resistance | 4.1 | °C/W |
PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | ||
---|---|---|---|---|---|---|---|
DC-DC STAGE | |||||||
VIN | Input voltage range | 1.8 | 5.5 | V | |||
VIN | Input voltage range for start-up | 1.9 | 5.5 | V | |||
VOUT | TPS63000 output voltage range | 1.2 | 5.5 | V | |||
VFB | TPS63000 feedback voltage | PS/SYNC = VIN | 495 | 500 | 505 | mV | |
f | Oscillator frequency | 1250 | 1500 | kHz | |||
Frequency range for synchronization | 1250 | 1800 | kHz | ||||
ISW | Switch current limit | VIN = VINA = 3.6 V, TA = 25°C | 1600 | 1800 | 2000 | mA | |
High-side switch ON-resistance | VIN = VINA = 3.6 V | 100 | mΩ | ||||
Low-side switch ON-resistance | VIN = VINA = 3.6 V | 100 | mΩ | ||||
Line regulation | 0.5% | ||||||
Load regulation | 0.5% | ||||||
Iq | Quiescent current | VIN | IOUT = 0 mA, VEN = VIN = VINA = 3.6 V, VOUT = 3.3 V |
1 | 1.5 | μA | |
VINA | 40 | 50 | μA | ||||
VOUT (adjustable output voltage) | 4 | 6 | μA | ||||
FB input impedance (fixed output voltage) | 1 | MΩ | |||||
IS | Shutdown current | VEN = 0 V, VIN = VINA = 3.6 V | 0.1 | 1 | μA | ||
CONTROL STAGE | |||||||
VUVLO | Undervoltage lockout threshold | VINA voltage decreasing | 1.5 | 1.7 | 1.8 | V | |
VIL | EN, PS/SYNC input low voltage | 0.4 | V | ||||
VIH | EN, PS/SYNC input high voltage | 1.2 | V | ||||
EN, PS/SYNC input current | Clamped on GND or VINA | 0.01 | 0.1 | μA | |||
Overtemperature protection | 140 | °C | |||||
Overtemperature hysteresis | 20 | °C |