TPS63020-Q1 Texas instruments

TPS63020-Q1

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TPS63020-Q1

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Описание

The TPS63020-Q1 device provides 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 3 A 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 4 A. The output voltage is programmable using an external resistor divider. The converter can be disabled to minimize battery drain. During shutdown, the load is disconnected from the battery. The device is packaged in a 3 mm × 4 mm 14-pin VSON PowerPAD™ package (DSJ).

Qualified for Automotive Applications
AEC-Q100 Qualified with the Following Results:
- Device Temperature Grade: –40°C to 125°C
  Operating Junction Temperature Range
- Device HBM ESD Classification Level H1B
- Device CDM ESD Classification Level C4A
Input Voltage Range: 1.8 V to 5.5 V
Up to 96% Efficiency
3 A Output Current at 3.3 V in Step Down Mode
(V_IN > 3.6 V)
More than 2 A Output Current at 3.3 V in Boost
Mode (V_IN > 2.5 V)
Automatic Transition Between Step Down and
Boost Mode
Dynamic Input Current Limit
Device Quiescent Current less than 50 µA
Adjustable Output Voltage Range from 1.2 V to
5.5 V
Power Save Mode for Improved Efficiency at
Low Output Power
Forced Fixed Frequency Operation at 2.4 MHz
and Synchronization Possible
Smart Power Good Output
Load Disconnect During Shutdown
Overtemperature Protection
Overvoltage Protection
Available in a 3-mm × 4-mm, VSON-14 Package

Topology	Buck-Boost
Vin (min) (V)	1.8
Vin (max) (V)	5.5
Vout (max) (V)	5.5
Vout (min) (V)	1.2
Duty cycle (max) (%)	100
Features	Enable, Frequency synchronization, Light Load Efficiency, Load Disconnect, Power good, Synchronous Rectification, UVLO Fixed
Switch current limit (typ) (A)	4
Switching frequency (min) (kHz)	2200
Switching frequency (max) (kHz)	2600
Iq (typ) (mA)	0.025
Iout (max) (A)	2
Rating	Automotive
Operating temperature range (°C)	-40 to 125
Type	Converter