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

TPS65217x core device functionality

Key features TPS65217x
Number of power rails available 7
Input voltage range 2.7 V - 5.8 V
Sequencing (power-up/down) Configurable *
Special features Power path, Linear Charger, WLED, DVS

* Voltage rails and power up sequences are set by default settings. Specific Voltage rails and Sequences settings may be obtained by contacting your Sales Office.

Multi-rail configurations Voltage range* Current limit
DCDC1 0.9 V - 3.3 V 1.2 A
DCDC2 0.9 V - 3.3 V 1.2 A
DCDC3 0.9 V - 3.3 V 1.2 A
LDO1 1.0 V - 3.3 V 100 mA
LDO2 0.9 V - 3.3 V 100 mA
LDO3/LS1 1.5 V - 3.3 V 400 mA
LDO4/LS2 1.5 V - 3.3 V 400mA

Existing TPS65217x configurations

  TPS65217A TPS65217B TPS65217C TPS65217D
Processors manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Processor package AM335x ZCE AM335x ZCZ, ZCE AM335x ZCZ, ZCE AM335x ZCZ, ZCE
Memory support DDR2 DDR2 DDR3 DDR3-L
Multi-rail configurations Voltage Sequence (Strobe) Voltage Sequence (Strobe) Voltage Sequence (Strobe) Voltage Sequence (Strobe)
DCDC1 1.8 1 1.8 1 1.5 1 1.35 1
DCDC2 3.3 2 1.1 5 1.1 5 1.1 5
DCDC3 1.1 3 1.1 5 1.1 5 1.1 5
LDO1 1.8 Always on 1.8 Always on 1.8 Always on 1.8 Always on
LDO2 3.3 2 3.3 2 3.3 3 3.3 3
LDO3/LS1 Load switch 1 3.3 (LDO, 200mA) 3 1.8 (LDO, 400mA) 2 1.8 (LDO, 400mA) 2
LDO4/LS2 Load switch 4 3.3 (LDO, 200mA) 4 3.3 (LDO, 400mA) 4 3.3 (LDO, 400mA) 4
User's guide Powering the AM335x with the TPS65217x Powering the AM335x with the TPS65217x Powering the AM335x with the TPS65217x Powering the AM335x with the TPS65217x

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)
Vout (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    
3.3    
4    
1    
3    
1.2    
Comm Control    
Catalog    
-40 to 105    
48VQFN    
3.45 | 1ku    
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