TPS62620_16 Datasheet, PDF (1/28 Pages) Texas Instruments – 600-mA, 6-MHz High-Efficiency Step-Down Converter In Chip Scale Packaging

Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
TPS62620, TPS62621, TPS62622
TPS62623, TPS62624, TPS62625
SLVS848D – JULY 2009 – REVISED OCTOBER 2015
TPS6262x 600-mA, 6-MHz High-Efficiency Step-Down Converter
In Chip Scale Packaging
1 Features
•1 Wide Input Voltage Range from 2.3 V to 5.5 V
• 6 MHz Regulated Frequency Operation
• 90% Efficiency at 6 MHz Operation
• 31 μA Quiescent Current
• Best in Class Load and Line Transient
• ±2% Total DC Voltage Accuracy
• Automatic PFM/PWM Mode Switching
• Low Ripple Light-Load PFM Mode
• Internal Soft Start, 120-μs Start-Up Time
• Integrated Active Power-Down Sequencing
(TPS62624 only)
• Current Overload and Thermal Shutdown
Protection
• Three Surface-Mount External Components
Required (One MLCC Inductor, Two Ceramic
Capacitors)
• Complete Sub 1-mm Component Profile Solution
• Total Solution Size < 12 mm²
• Available in a 6-Pin NanoFree™ (WCSP)
Regular and Ultra-Thin Packaging
2 Applications
• Mobile Phones, Smartphones
• WLAN, GPS and Bluetooth™ Applications
• DTV Tuner Applications
• DC/DC Micro Modules
spacer
3 Description
The TPS6262x device family provides high-frequency
synchronous step-down DC/DC converters optimized
for battery-powered portable applications. Intended
for low-power applications, the TPS6262x devices
support up to 600 mA load current, and allow the use
of low cost chip inductor and capacitors.
With a wide input voltage range of 2.3 V to 5.5 V, the
devices support applications powered by Li-Ion
batteries with extended voltage range. Different fixed
voltage output versions are available from 1.2 V to
2.3 V.
The TPS6262x devices operate at a regulated 6-MHz
switching frequency and enter the power-save mode
operation at light load currents to maintain high
efficiency over the entire load current range.
The pulse frequency modulation (PFM) mode extends
the battery life by reducing the quiescent current to
31 μA (typical) during light load and standby
operation. For noise-sensitive applications, the device
can be forced into fixed frequency pulse width
modulation (PWM) mode by pulling the MODE pin
high.
The TPS6262x devices operate over a free air
temperature range of –40°C to 85°C. They are
available in a 6-pin chip-scale package (WCSP).
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS6262x
DSBGA (6)
1.30 mm × 0.96 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
space
Typical Application Schematic
V_BAT
2.3 V .. 5.5 V
TPS6262x
VIN
SW
L
0.47 μH
V_OUT
1.8 V @ 600mA
C_I
2.2 μF
EN
GND
FB
MODE
C_O
4.7 μF
Efficiency vs. Load Current
100
V_I = 3.6 V,
90 _{VO = 1.8 V}
80
70
Efficiency
PFM/PWM Operation
60
50
40
Power Loss
30
PFM/PWM Operation
20
10
0
0.1
1
10
100
I_O - Load Current - mA
200
180
160
140
120
100
80
60
40
20
0
1000
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.