Power Management IC (PMIC) w/ 3 DC/DCs, 4 LDOs, Linear Battery Charger & White LED Driver - TPS65217

TPS65217 (ACTIVE)

Power Management IC (PMIC) w/ 3 DC/DCs, 4 LDOs, Linear Battery Charger & White LED Driver

 

Description

The TPS65217 is a single-chip power management IC specifically designed to support applications in portable and 5-V non-portable applications. It provides a linear battery charger for single-cell Li-ion and Li-Polymer batteries, dual-input power path, three step-down converters, four LDOs, and a high-efficiency boost converter to power two strings of up to 10 LEDs each. The system can be supplied by any combination of USB port, 5-V AC adaptor, or Li-Ion battery. The device is characterized across a –40°C to +105°C temperature range which makes it suitable for industrial applications. Three high-efficiency 2.25-MHz step-down converters can providing the core voltage, memory, and I/O voltage for a system.

These 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.

LDO1 and LDO2 can support system-standby mode. In SLEEP state output current is limited to 1 mA to reduce quiescent current whereas in normal operation they can support up to 100 mA each. LDO3 and LDO4 can be configured to support up to 4 00 mA each and can be configured as load switches instead of regulators. All four LDOs have a wide input voltage range that allows them to be supplied either from one of the DC-DC converters or directly from the system voltage node.

By default only LDO1 is always ON but any rail can be configured to remain up in SLEEP state. Especially the DC-DC converters can remain up in a low-power PFM mode to support system suspend mode.

The TPS65217 offers configurable power-up and power-down sequencing and several housekeeping functions such as power-good output, pushbutton monitor, hardware reset function and temperature sensor to protect the battery.

For details on specific applications please see our application note SLVU551.

The TPS65217 comes in a 48-pin leadless package (6-mm × 6-mm QFN) with a 0.4-mm pitch.

Features

  • CHARGER/POWER PATH
    • 2-A Output Current on Power Path
    • Linear Charger; 700-mA Maximum Charge
      Current
    • 20-V Tolerant USB and AC Inputs
    • Thermal Regulation, Safety Timers
    • Temperature Sense Input
  • STEP-DOWN CONVERTER (DCDC1, 2, 3)
    • Three Step-Down Converter With Integrated
      Switching FETs
    • 2.25-MHz Fixed Frequency Operation
    • Power Save Mode at Light Load Current
    • Output Voltage Accuracy in PWM Mode ±2.0%
    • 100% Duty Cycle for Lowest Dropout
    • Typical 15-µA Quiescent per Converter
    • Passive Discharge to Ground When Disabled
  • LDOs (LDO1, 2)
    • Two Adjustable LDOs
    • LDO2 Can Be Configured to Track DCDC3
    • Typical 15-µA Quiescent Current
  • LOAD SWITCHES (LDO3, 4)
    • Two Independent Load Switches That Can Be
      Configured as LDOs
  • WLED DRIVER
    • Internally Generated PWM for Dimming
      Control
    • 38-V Open LED Protection
    • Supports Two Strings of Up To 10 LEDs at
      25 mA Each
    • Internal Low-Side Current Sinks
  • PROTECTION
    • Undervoltage Lockout and Battery Fault
      Comparator
    • Always-On Push-Button Monitor
    • Hardware Reset Pin
    • Password Protected I2C® Registers
  • INTERFACE
    • I2C Interface (Address 0x24)
    • Password Protected I2C Registers

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Parametrics Compare all products in Power Management Multi-Channel IC (PMIC) Solutions

 
Regulated Outputs (#)
Processor Supplier
Processor Name
Vin (Min) (V)
Vin (Max) (V)
LDO
Step-Up DC/DC Converter
Step-Down DC/DC Converter
Iout (Max) (A)
Special Features
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
TPS65217
7    
Texas Instruments    
AM335x    
2.7    
5.8    
4    
1    
3    
1.2    
Comm Control    
Catalog    
-40 to 105    
48VQFN    
2.04 | 1ku