Refer to the PDF data sheet for device specific package drawings
The TPS6125x device provides a power supply solution for battery-powered portable applications. Intended for low-power applications, the TPS6125x supports up to 800-mA load current from a battery discharged as low as 2.65V and allows the use of low cost chip inductor and capacitors.
With a wide input voltage range of 2.3 V to 5.5 V, the device supports applications powered by Li-Ion batteries with extended voltage range. Different fixed voltage output versions are available from 3.15 V to 5.0 V.
The TPS6125x operates at a regulated 3.5-MHz switching frequency and enters power-save mode operation at light load currents to maintain high efficiency over the entire load current range. The PFM mode extends the battery life by reducing the quiescent current to 37 μA (typ) during light load operation.
In addition, the TPS6125x device can also maintain its output biased at the input voltage level. In this mode, the synchronous rectifier is current limited allowing external load (e.g. audio amplifier) to be powered with a restricted supply. In this mode, the quiescent current is reduced to 21 µA. During shutdown, the load is completely disconnected from the battery. Input current in shutdown mode is less than 1 µA (typ), which maximizes battery life.
The TPS6125x offers a very small solution size due to minimum amount of external components. It allows the use of small inductors and input capacitors to achieve a small solution size.
Changes from F Revision (March 2016) to G Revision
Changes from E Revision (March 2015) to F Revision
Changes from D Revision (December 2014) to E Revision
Changes from C Revision (August 2012) to D Revision
Changes from B Revision (May 2012) to C Revision
Changes from A Revision (October 2011) to B Revision
Changes from * Revision (September 2011) to A Revision
TA | PART NUMBER(1) | OUTPUT VOLTAGE |
DEVICE SPECIFIC FEATURES |
---|---|---|---|
–40°C to 85°C | TPS61253 | 5.0 V | Supports 5 V, up to 1500 mA peak loading down to 3.3 V input voltage |
TPS61254 | 4.5 V | Supports 4.5 V / 800 mA loading down to 2.65 V input voltage |
|
TPS61255(2) | 3.75 V | ||
TPS61256 | 5.0 V | Supports 5 V / 900 mA loading down to 3.3 V input voltage |
|
TPS61257(2) | 4.3 V | ||
TPS61258 | 4.5 V | Supports 4.5 V, up to 1500 mA peak loading down to 3.3 V input voltage |
|
TPS61259 | 5.1 V | Supports 5.1 V, up to 1500 mA peak loading down to 3.3 V input voltage |
|
TPS612592 | 5.2 V | Supports 5.2 V, up to 1500 mA peak loading down to 3.3 V input voltage |
PIN | I/O | DESCRIPTION | |
---|---|---|---|
NAME | NO. | ||
BP | C3 | I | This is the mode selection pin of the device and is only of relevance when the device is disabled (EN = Low). This pin must not be left floating and must be terminated. Refer to Table 2 for more details. |
BP = Low: The device is in true shutdown mode. | |||
BP = High: The output is biased at the input voltage level with a maximum load current capability of ca. 150mA. In standby mode, the device only consumes a standby current of 21µA (typ). | |||
EN | B3 | I | This is the enable pin of the device. Connecting this pin to ground forces the device into shutdown mode. Pulling this pin high enables the device. This pin must not be left floating and must be terminated. |
GND | C1, C2 | Ground pin. | |
SW | B1, B2 | I/O | This is the switch pin of the converter and is connected to the drain of the internal Power MOSFETs. |
VIN | A3 | I | Power supply input. |
VOUT | A1, A2 | O | Boost converter output. |
MIN | MAX | UNIT | ||
---|---|---|---|---|
Input voltage | Voltage at VIN(2), VOUT(2), SW(2), EN(2), BP(2) | –0.3 | 7 | V |
Input current | Continuous average current into SW (4) | 1.8 | A | |
Peak current into SW (5) | 3.5 | |||
Power dissipation | Internally limited | |||
Temperature | Operating, TA (3) | –40 | 85 | °C |
Operating virtual junction, TJ | –40 | 150 | ||
Storage, Tstg | –65 | 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) | ±1000 | |||
Machine model (MM) | ±200 |
MIN | NOM | MAX | UNIT | |||
---|---|---|---|---|---|---|
VI | Input voltage range | TPS61253 | 2.65(1) | 4.85 | V | |
TPS61254 | 2.5 | 4.35 | ||||
TPS61256 | 2.5 | 4.85 | ||||
TPS61257 | 2.5 | 4.15 | ||||
TPS61258 | 2.65(1) | 4.35 | ||||
TPS61259 | 2.65(1) | 4.85 | ||||
TPS612592 | 2.65(1) | 4.85 | ||||
RL | Minimum resistive load for start-up | TPS6125x | 55 | Ω | ||
L | Inductance | 0.7 | 1.0 | 2.9 | µH | |
CO | Output capacitance | 3.5 | 5 | 50 | µF | |
TA | Ambient temperature | –40 | 85 | °C | ||
TJ | Operating junction temperature | –40 | 125 | °C |
THERMAL METRIC(1) | TPS6125x | UNIT | |
---|---|---|---|
YFF | |||
9 PINS | |||
RθJA | Junction-to-ambient thermal resistance | 108.3 | °C/W |
RθJC(top) | Junction-to-case (top) thermal resistance | 1.0 | |
RθJB | Junction-to-board thermal resistance | 18 | |
ψJT | Junction-to-top characterization parameter | 4.2 | |
ψJB | Junction-to-board characterization parameter | 17.9 |
FIGURE | |||
---|---|---|---|
η | Efficiency | vs Output current | Figure 1, Figure 2, Figure 3, Figure 5 |
vs Input voltage | Figure 4 | ||
VO | DC output voltage | vs Output current | Figure 6, Figure 7, Figure 8, Figure 9, Figure 10, Figure 14 |
vs Input voltage | Figure 11 | ||
IO | Maximum output current | vs Input voltage | Figure 12, Figure 13 |
ΔVO | Peak-to-peak output ripple voltage | vs Output current | Figure 15, Figure 16, Figure 17 |
ICC | Supply current | vs Input voltage | Figure 18, Figure 19 |
ILIM | DC pre-charge current | vs Differential input-output voltage | Figure 20, Figure 21 |
Valley current limit | vs Temperature | Figure 22, Figure 23 | |
rDS(on) | MOSFET rDS(on) | vs Temperature | Figure 24 |