TPS63070

Part: TPS63070 (also TPS630701, TPS630702) — Texas Instruments

Type: Buck-Boost Converter

Description: 2.0–16 V input, 2.5–9 V output buck-boost converter with 2 A output current, 3.6 A typical switch current limit, 2.4 MHz switching frequency and up to 95% efficiency.

Operating Conditions:

• Supply voltage: 2.0–16 V (start-up requires VIN ≥ 3.0 V when VOUT < 3.0 V)
• Operating junction temperature: -40 to 125 °C
• Output voltage range: 2.5–9 V (TPS63070/TPS630702 adjustable; TPS630701 fixed 5 V)
• Effective inductance 0.7–2.8 µH (1.5 µH nominal); total VOUT capacitance 15–470 µF

Absolute Maximum Ratings:

• Voltage on VIN, PS/SYNC, EN, VSEL: -0.3 to 20 V
• Voltage on L1: -0.3 to 20 V (transient <10 ns: -3 to 25 V)
• Voltage on L2, PG, VOUT, FB: -0.3 to 12 V (L2 transient <10 ns: -3 to 15 V)
• Voltage on AUX: -0.3 to 7 V; FB2: -0.3 to 3 V
• Operating junction temperature: -40 to 150 °C
• Storage temperature: -65 to 150 °C

Key Specs:

• Output current: 2 A (VIN ≥ 4.5 V or VOUT ≥ 4.5 V, with VOUT/VIN ≤ 1)
• Quiescent current into VIN: 54 µA typ, 103 µA max (PFM, IOUT = 0, VIN = 6 V, VOUT = 5 V, Tj = -40 to 85 °C)
• Shutdown current: 2 µA typ, 12 µA max (VEN = 0 V, VIN = 5 V, Tj = -40 to 85 °C)
• Feedback voltage: 800 mV; accuracy ±1% in PWM mode, +3%/-1% in PFM mode (VIN ≥ 3 V)
• Switching frequency: 2400 kHz typ (2100–2700 kHz); synchronization range 2100–2800 kHz
• Positive average input current limit: 3600 mA typ (3050–4150 mA; VIN = 5 V, VOUT = 6.5 V)
• Switch RDS(on) at VIN = 5 V: buck 50 mΩ high side / 100 mΩ low side; boost 40 mΩ high side / 80 mΩ low side (typ)
• UVLO falling threshold: 1.85 V typ (1.7–1.95 V); thermal shutdown 160 °C typ with 20 °C hysteresis

Features:

• Automatic transition between buck and boost mode
• Power Save Mode with forced fixed-frequency PWM option and external clock synchronization
• Precise EN input for user-defined undervoltage lockout and sequencing
• Power Good output (open drain)
• VSEL pin for output voltage change via FB2
• Load disconnect during shutdown
• Output discharge option (TPS630702)
• Fixed and adjustable output voltage options
• Overtemperature and input/output overvoltage protection

Applications:

• Dual Li-Ion applications
• Industrial metering equipment
• DSCs and camcorders
• Notebook computers
• Ultra mobile PCs and mobile internet devices
• Personal medical products

Package:

• VQFN, 13 pins (2.5 mm × 3 mm body)

• 1 · Input Voltage Range: 2.0 V to 16 V
• Output Voltage Range: 2.5 V to 9 V
• Up to 95% Efficiency
• +/- 1% dc accuracy in PWM mode
• +3% / -1% dc accuracy in PFM mode
• 2 A Output Current in Buck Mode
• 2 A Output Current in Boost Mode (VIN = 4 V; Vout = 5 V)
• Precise ENABLE input allows
• -user defined undervoltage lockout
• -exact sequencing
• Automatic Transition Between Step Down and Boost Mode
• Typical Device Quiescent Current: 50 μ A
• Fixed and Adjustable Output Voltage Options
• Output Discharge Option
• Power Save Mode for Improved Efficiency at Low Output Power
• Forced Fixed Frequency Operation at 2.4 MHz and Synchronization Option
• Power Good Output
• VSEL simply allows output voltage change
• Load Disconnect During Shutdown
• Overtemperature Protection
• Input / Output Overvoltage Protection
• Available in QFN Package

• Dual Li-Ion Applications
• Industrial Metering Equipment
• DSC's and Camcorders
• Notebook Computers
• Ultra Mobile PC's and Mobile Internet Devices
• Personal Medical Products

over VIN = 2V to 16V; Tj = -40°C to 125°C; typical values are at Tj = 25°C (unless otherwise noted)

over operating junction temperature range (unless otherwise noted) (1)

over operating junction temperature range (unless otherwise noted)

The TPS6307x is a high efficiency, low quiescent current buck-boost converter suitable for applications where the input voltage can be higher or lower than the output voltage. The TPS63070 is internally supplied from the higher of the input voltage or output voltage. For proper operation either one or both need to have a voltage of 3.0 V or above but must not exceed their maximum rating.