TPS62660_16 Datasheet, PDF (1/27 Pages) Texas Instruments – 1000-mA, 6-MHz High-Efficiency Step-Down Converter in Chip Scale Packaging

Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
TPS62660, TPS62665
SLVS871D – FEBRUARY 2010 – REVISED JUNE 2016
TPS62660 1000-mA, 6-MHz High-Efficiency Step-Down Converter
in Chip Scale Packaging
1 Features
•1 91% Efficiency at 6-MHz Operation
• 31-μA Quiescent Current
• Wide V_IN Range from 2.3 V to 5.5 V
• 6-MHz Regulated Frequency Operation
• Best in Class Load and Line Transient
• ±2% Total DC Voltage Accuracy
• Automatic PFM or PWM Mode Switching
• Low Ripple Light-Load PFM Mode
• Fast Turnon Time: < 60-μs Start-Up Time
• Integrated Active Power-Down Sequencing
(Optional)
• 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™ (DSBGA)
2 Applications
• Cell Phones and Smart Phones
• PDAs and Pocket PCs
• Portable Hard Disk Drives
• DC-DC Micro Modules
3 Description
The TPS6266x device is a high-frequency
synchronous step-down DC-DC converter optimized
for battery-powered portable applications. Intended
for low-power applications, the TPS6266x supports
up to 1000-mA peak load current, and allows the use
of low-cost chip inductor and capacitors.
With a wide input voltage range of 2.3 V to 5.5 V, the
device supports 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 TPS6266x operates at a regulated 6-MHz
switching frequency and enters the power-save mode
operation at light load currents to maintain high
efficiency over the entire load current range.
The 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 PWM mode by pulling the MODE pin high.
In the shutdown mode, the current consumption is
reduced to less than 1 μA.
The TPS6266x is available in an 6-pin chip scale
package (DSBGA).
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS62660
DSBGA (6)
1.30 mm × 0.93 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Smallest Solution Size Application
V_BAT
3.0 V .. 5.5 V
TPS62661
VIN
L
SW
0.47 mH
V_OUT
1.8 V @ 1000mA
C_I
4.7 mF
EN
GND
FB
MODE
C_O
4.7 mF
Copyright © 2016, Texas Instruments Incorporated
Efficiency vs Load Current
100
V_I = 3.6 V,
90 V_O = 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
500
450
400
350
300
250
200
150
100
50
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.