TPS65720_15 Datasheet, PDF (1/66 Pages) Texas Instruments – Integrated PMIC

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TPS65720, TPS657201, TPS657202, TPS65721
SLVS979A – OCTOBER 2009 – REVISED SEPTEMBER 2015
TPS6572x Integrated PMIC With 1 DC-DC, 1 LDO, Battery Charger and GPIO
1 Features
•1 Battery Charger With Power Path Management
• 28-V Rated Power Path With:
– 100-mA Input Current Limit
– 500-mA Input Current Limit
• 300-mA Charge Current
• 200-mA Step-Down Converter for TPS65720
• 400-mA Step-Down Converter for TPS65721,
TPS657201, TPS657202
• Up to 92% Efficiency
• V_IN Range for DCDC Converter From 2.3 V to
5.6 V
• 2.25-MHz Fixed Frequency Operation
• Power Save Mode at Light Load Current
• Output Voltage Accuracy in PWM Mode ±2%
• 100% Duty Cycle for Lowest Dropout
• 1 General Purpose 200-mA LDO
• V_IN Range for LDO From 1.8 V to 5.6 V
• I²C Compatible Interface
• 4GPIOs
• Available in a 25-Ball DSBGA With 0.4-mm Pitch
and in 4-mm × 4-mm 32-Pin WQFN Package
2 Applications
• Bluetooth Headsets
• Handheld Equipment
• Wearables, Smart Watches
• Portable Accessories
3 Description
The TPS6572x device is a small power management
unit targeted for Bluetooth headsets or other portable
low-power consumer-end equipments. The device
contains an USB friendly Lithium-Ion battery charger,
a highly efficient step-down converter, a low-dropout
linear regulator, and additional supporting functions.
The device is controlled by an I²C interface. Several
settings can be customized by the use of nonvolatile
memory which is factory programmed.
The 2.25-MHz step-down converter enters 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 mode using the I²C-compatible
interface.
The device allows the use of small inductors and
capacitors to achieve a small solution size. The
TPS65720 provides an output current of up to
200 mA on the DC-DC converter while TPS657201,
TPS657202, and TPS65721 provide up to 400 mA.
The TPS6572x also integrates one 200-mA LDO. The
LDO operates with an input voltage range from 1.8 V
to 5.6 V, thus allowing it to be supplied from the
output of the step-down converter or directly from the
system voltage.
The TPS65720, TPS657201, and TPS657202 come
in a small 25-ball 2-mm × 2-mm wafer chip scale
package (DSBGA) with 0.4-mm ball pitch or a
4-mm × 4-mm WQFN package with a 0.4-mm pitch
(TPS65721).
Device Information ⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS65720x
DSBGA (25)
2.11 mm × 2.11 mm
TPS65721
WQFN (32)
4.00 mm × 4.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application Schematic
AC
1 µF
ISET
R5
SYS
R6
ON
or
OFF
PB_IN
PGND
AGND
GPIO0
GPIO1
GPIO2
GPIO3
Indication
LEDs
TPS65720
Charger and
Power Path
DCDC1
200 mA
LDO1
200 mA
Reset Generator
and Startup Logic
GPIO or
5-mA
Current
Sink
I²C
Interface
BAT
BAT
TS ^10kΩ
NTC
SYS
SYS
LiIon
4.7 µF / 6.3 V
L1 ^{2.2 µH}
R1
360 kΩ
FB_DCDC1
VDCDC1 = 2.05 V
4.7 µF
22pF
VINLDO1
R2
150 kΩ
2.2 µF
Bluetooth
Chip
VLDO1
VLDO1 = 1.85 V
4.7 µF / 4 V
2 × 100 kΩ
RESET
2×
3.3 kΩ
INT
Vin
Reset
INT
HOLD_LDO1
HOLD_DCDC1
GPIO
SCLK
SDAT
SCLK
SDAT
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.