Texas Instruments TPS6521845 Power Management IC (PMIC)

Texas Instruments TPS6521845 Power Management IC (PMIC) is a single-chip power management IC, specifically designed to support both portable (Li-Ion battery) and non-portable (5V adapter) applications. The device was designed for use with NXP i.MX 6Solo and 6DualLite processors. The Texas Instruments TPS6521845 is characterized across a –40°C to +105°C temperature range, making it suitable for a wide range of industrial applications.

Features

Three adjustable step-down converters with integrated switching FETs (DCDC1, DCDC2, and DCDC3):
- DCDC1: 1.1V default, up to 1.8A
- DCDC2: 1.1V default, up to 1.8A
- DCDC3: 1.2V default, up to 1.8A
- V_IN range from 2.7V to 5.5V
- Adjustable output voltage range 0.85V to 1.675V (DCDC1 and DCDC2)
- Adjustable output voltage range 0.9V to 3.4V (DCDC3)
- Power save mode at light load current
- 100% duty cycle for lowest dropout
- Active output-discharge when disabled
One adjustable buck-boost converter with integrated switching FETs (DCDC4):
- DCDC4: 3.3V default, up to 1.6A
- V_IN range from 2.7V to 5.5V
- Adjustable output voltage range from 1.175V to 3.4V
- Active output-discharge when disabled
Two low-quiescent current, high efficiency step-down converters for battery backup domain (DCDC5, DCDC6)
- DCDC5: 1V output
- DCDC6: 1.8V output
- V_IN range from 2.2V to 5.5V
- Supplied from system power or coin-cell backup battery
Adjustable general-purpose LDO (LDO1)
- LDO1: 1.8V default up to 400mA
- V_IN range from 1.8V to 5.5V
- Adjustable output voltage range from 0.9V to 3.4V
- Active output-discharge when disabled

Low-voltage load switch (LS1) with 350mA current limit
- V_IN range from 1.2V to 3.6V
- 110mΩ (max) switch impedance at 1.35V
5V load switch (LS2) with 100mA or 500mA selectable current limit
- V_IN range from 4V to 5.5V
- 500mΩ (max) switch impedance at 5V
High-voltage load switch (LS3) with 100mA or 500mA selectable current limit
- V_IN range from 1.8V to 10V
- 500mΩ (max) switch impedance
Supervisor with built-in supervisor function monitors
- DCDC1, DCDC2 ±4% tolerance
- DCDC3, DCDC4 ±5% tolerance
- LDO1 ±5% tolerance
Protection, diagnostics, and control:
- Undervoltage Lockout (UVLO)
- Always-on push-button monitor
- Overtemperature warning and shutdown
- Separate Power-Good output for backup and main supplies
- I²C interface (address 0x24) (see timing requirements for I²C operation at 400kHz)