TPS62650-Q1 Datasheet, PDF (1/40 Pages) Texas Instruments – 800-mA, 6-MHz High-Efficiency Step-Down Converter With I2C™ Compatible Interface in Chip-Scale Packaging

CSP-9
TPS62650-Q1
www.ti.com
SLVSB62A – MARCH 2012 – REVISED MARCH 2012
800-mA, 6-MHz High-Efficiency Step-Down Converter
With I²C™ Compatible Interface in Chip-Scale Packaging
Check for Samples: TPS62650-Q1
FEATURES
1
•23 Qualified for Automotive Applications
• AEC-Q100 Qualified with the Following
Results:
– Device Temperature Grade 2: –40°C to
+105°C Ambient Operating Temperature
Range
– Device HBM ESD Classification Level H2
– Device CDM ESD Classification Level C3B
• 86% Efficiency at 6-MHz Operation
• 38-μA Quiescent Current
• Wide V_IN Range From 2.3 V to 5.5 V
• 6MHz Regulated Frequency Operation
• Best-In-Class Load and Line Transient
• ±2% PWM DC Voltage Accuracy
• Automatic PFM/PWM Mode Switching
• Low-Ripple Light-Load PFM
• I²C Compatible Interface up to 3.4 Mbps
• Pin-Selectable Output Voltage (VSEL)
• Internal Soft-Start, <150-μs Start-Up Time
• 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 <13 mm²
TPS62650
V_I
2.3 V .. 5.5 V
C1
4.7mF
VIN
GND
FB
SW
L1
0.47 mH
V_O
C2
4.7mF
V_O = Roof
V_O = Floor
I²C Bus
up to 3.4 Mbips
EN
VSEL
SDA
SCL
Figure 1. Typical Application
• Available in a 9-Pin NanoFree™ (CSP) Package
APPLICATIONS
• SmartReflex™ Compliant Power Supply
• OMAP™ Application Processor Core Supply
• Cell Phones, Smart-Phones
• Micro DC-DC Converter Modules
DESCRIPTION
The TPS62650-Q1 device is a high-frequency
synchronous step-down dc-dc converter optimized for
battery-powered portable applications. Intended for
low-power applications, the TPS62650-Q1 supports
up to 800mA load current and allows the use of
small, low cost inductors and capacitors.
The device is ideal for mobile phones and similar
portable applications powered by a single-cell Li-Ion
battery. With an output voltage range adjustable via
I²C interface down to 0.75V, the device supports low-
voltage DSPs and processors core power supplies in
smart-phones and handheld computers.
The TPS62650-Q1 operates at a regulated 6MHz
switching frequency and enters the efficiency
optimized power-save mode operation at light load
currents to maintain high efficiency over the entire
load current range. In the shutdown mode, the
current consumption is reduced to less than 3.5μA.
Description continued on next page.
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100
90 ^{VO = 1.2V}
80
70
V_I = 2.7V
PFM/PWM Operation
60
50
V_I = 3.6V
PFM/PWM Operation
40
30
V_I = 4.2V
20
PFM/PWM Operation
V_I = 3.6V
Forced PWM Operation
10
0
0.1
1
10
100
1000
I_O − Load Current − mA
Figure 2. Efficiency vs Load Control
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
NanoFree, SmartReflex, OMAP are trademarks of Texas Instruments.
2
I²C is a trademark of Philips Semiconductors.
3
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2012, Texas Instruments Incorporated