TPS63070 Texas instruments

TPS63070

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TPS63070

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Описание

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. Output currents can go as high as 2 A in boost mode and in buck mode. 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 converter can be disabled to minimize battery drain. During shutdown, the load is disconnected from the battery. The device is available in a 2.5 mm x 3 mm QFN package.

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 µA
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

Topology	Buck-Boost
Vin (min) (V)	2
Vin (max) (V)	16
Vout (max) (V)	5, 9
Vout (min) (V)	2.5, 5
Duty cycle (max) (%)	100
Features	Dynamic Voltage Scaling, Enable, Frequency synchronization, Light Load Efficiency, Load Disconnect, Output discharge, Power good, Synchronous Rectification, UVLO Fixed, Voltage Margining
Switch current limit (typ) (A)	3.6
Switching frequency (min) (kHz)	2100
Switching frequency (max) (kHz)	2800
Iq (typ) (mA)	0.05
Iout (max) (A)	2
Rating	Catalog
Operating temperature range (°C)	-40 to 125
Type	Converter