TPS65070 Power Management IC (PMIC) with battery charger, three step-down converters and two LDOs | TI.com

TPS65070
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Power Management IC (PMIC) with battery charger, three step-down converters and two LDOs

 

Description

The TPS6507x family of devices are single-chip power management ICs (PMICs) for portable applications consisting of a battery charger with power path management for a single Li-Ion or Li-Polymer cell. The charger can either be supplied by a USB port on pin USB or by a DC voltage from a wall adapter connected to pin AC. Three highly efficient 2.25-MHz step-down converters are targeted at providing the core voltage, memory, and I/O voltage in a processor-based system. The step-down converters enter a low power mode at light load for maximum efficiency across the widest possible range of load currents.

For low noise applications the devices can be forced into fixed-frequency PWM using the I2C interface. The step-down converters allow the use of small inductors and capacitors to achieve a small solution size. The TPS6507x devices also integrate two general purpose LDOs for an output current of 200 mA. These LDOs can be used to power an SD-card interface and an always-on rail, but can be used for other purposes as well. Each LDO operates with an input voltage range from 1.8 V to 6.3 V allowing them to be supplied from one of the step-down converters or directly from the main battery. An inductive boost converter with two programmable current sinks power two strings of white LEDs.

The TPS6507x devices come in a 48-pin leadless package (6-mm × 6-mm VQFN) with a 0.4-mm pitch.

Features

  • Charger/Power Path Management:
    • 2-A Output Current on the Power Path
    • Linear Charger; 1.5-A Maximum Charge Current
    • 100-mA/500-mA/800-mA/1300-mA Current Limit From USB Input
    • Thermal Regulation, Safety Timers
    • Temperature Sense Input
  • 3 Step-Down Converters:
    • 2.25-MHz Fixed-Frequency Operation
    • Up to 1.5 A of Output Current
    • Adjustable or Fixed Output Voltage
    • VIN Range From 2.8 V to 6.3 V
    • Power Save Mode at Light Load Current
    • Output Voltage Accuracy in PWM Mode ±1.5%
    • Typical 19-µA Quiescent Current per Converter
    • 100% Duty Cycle for Lowest Dropout
  • LDOs:
    • Fixed Output Voltage
    • Dynamic Voltage Scaling on LDO2
    • 20-µA Quiescent Current
    • 200-mA Maximum Output Current
    • VIN Range From 1.8 V to 6.3 V
  • wLED Boost Converter:
    • Internal Dimming Using I2C
    • Up to 2 × 10 LEDs
    • Up to 25 mA per String With Internal Current Sink
  • I2C Interface
  • 10 Bit A/D Converter
  • Touch Screen Interface
  • Undervoltage Lockout and Battery Fault Comparator

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Parametrics

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Part number Order Regulated outputs (#) Processor supplier Processor name Vin (Min) (V) Vin (Max) (V) Step-up DC/DC controller Step-down DC/DC controller LDO Step-up DC/DC converter Step-down DC/DC converter Iout (Max) (A) Iq (Typ) (mA) Features Shutdown current (Typ) (uA) Rating Operating temperature range (C) Configurability Package Group Package size: mm2:W x L (PKG)
TPS65070 Order now 5     Texas Instruments     OMAP-L1xx
TMS320C674x    
1.8     6.3     0     0     2     0     3     1.5     0.08     Comm Control
Power Good
Power Sequencing    
0.08     Catalog     -40 to 85     Factory programmable     VQFN | 48     48VQFN: 36 mm2: 6 x 6 (VQFN | 48)    
TPS65072 Order now 5     Texas Instruments       1.8     6.3     0     0     2     0     3     0.6     0.08     Comm Control
Power Good
Power Sequencing    
0.08     Catalog     -40 to 85       VQFN | 48     48VQFN: 36 mm2: 6 x 6 (VQFN | 48)    
TPS65073 Order now 5     Texas Instruments     OMAP35xx     1.8     6.3     0     0     2     0     3     1.5     0.08     Comm Control
Power Good
Power Sequencing    
0.08     Catalog     -40 to 85       VQFN | 48     48VQFN: 36 mm2: 6 x 6 (VQFN | 48)    
TPS650731 Order now 5     Texas Instruments     OMAP35xx     1.8     6.3     0     0     2     0     3     1.5     0.08     Comm Control
Power Good
Power Sequencing    
0.08     Catalog     -40 to 85     Factory programmable     VQFN | 48     48VQFN: 36 mm2: 6 x 6 (VQFN | 48)