TPS63000

Part: TPS63000 / TPS63001 / TPS63002 (TPS6300x) — Texas Instruments

Type: Single-Inductor Synchronous Buck-Boost Converter

Description: 1.8–5.5 V input, 1.2–5.5 V output buck-boost converter with 1.8 A (typ) switch current limit, up to 96% efficiency, and up to 1200 mA output current at 3.3 V in step-down mode.

Operating Conditions:

• Supply voltage (VIN, VINA): 1.8–5.5 V (start-up from 1.9 V minimum)
• Operating free-air temperature: -40 to 85 °C
• Operating junction temperature: -40 to 125 °C
• Output voltage range: 1.2–5.5 V (adjustable TPS63000)

Absolute Maximum Ratings:

• Max voltage on VIN, VINA, L1, L2, VOUT, PS/SYNC, EN, FB: 7 V (min -0.3 V)
• Max operating virtual junction temperature: 150 °C
• Storage temperature: -65 to 150 °C

Key Specs:

• Switch current limit: 1600 / 1800 / 2000 mA (min/typ/max), VIN = VINA = 3.6 V, TA = 25 °C
• Feedback voltage (TPS63000): 495 / 500 / 505 mV, PS/SYNC = VIN
• Oscillator frequency: 1250–1500 kHz; synchronization range 1250–1800 kHz
• High-side and low-side switch on-resistance: 100 mΩ typ each, VIN = VINA = 3.6 V
• Quiescent current from VINA: 40 μA typ, 50 μA max (IOUT = 0 mA, VEN = VIN = VINA = 3.3 V)
• Shutdown current: 0.1 μA typ, 1 μA max (VEN = 0 V, VIN = VINA = 3.6 V)
• UVLO threshold (VINA falling): 1.5 / 1.7 / 1.8 V (min/typ/max)
• EN/PS/SYNC logic thresholds: VIL ≤ 0.4 V, VIH ≥ 1.2 V
• Overtemperature protection: 140 °C with 20 °C hysteresis
• Junction-to-ambient thermal resistance (DRC): 46.8 °C/W

Features:

• Fixed and adjustable output voltage options
• Up to 96% efficiency
• 1200 mA output at 3.3 V in step-down mode (VIN = 3.6–5.5 V)
• Up to 800 mA output at 3.3 V in boost mode (VIN > 2.4 V)
• Automatic transition between step-down and boost modes
• Power-save mode for light-load efficiency
• Forced fixed-frequency operation and clock synchronization via PS/SYNC
• Load disconnect during shutdown
• Soft-start and short-circuit protection (current limit reduced to about 400 mA at 0 V output)
• Overtemperature protection

Applications:

• Two-cell and three-cell alkaline, NiCd or NiMH, and single-cell Li battery powered products
• Portable audio players
• Smart phones
• Personal medical products
• White LEDs

Package:

• VSON-10 (DRC), 3.00 mm × 3.00 mm, with exposed thermal pad connected to PGND

• All Two-Cell and Three-Cell Alkaline, NiCd or NiMH or Single-Cell Li Battery Powered Products
• Portable Audio Players
• Smart Phones
• Personal Medical Products
• White LEDs

• (1) The exposed thermal pad is connected to PGND.

over recommended free-air temperature range and over recommended input voltage range (typical at an ambient temperature range of 25°C) (unless otherwise noted)

over operating free-air temperature range (unless otherwise noted) (1)

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 onecell 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 powersave 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).