TPS62671_16 Datasheet, PDF (1/35 Pages) Texas Instruments – 500-mA/650-mA, 6-MHz High-Efficiency Step-Down Converter in Low Profile Chip Scale Packaging (Height < 0.4mm)

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TPS62671, TPS62672, TPS62674
TPS62675, TPS626751, TPS626765, TPS62679
SLVS952F – APRIL 2010 – REVISED JUNE 2014
TPS6267x 500-mA/650-mA, 6-MHz High-Efficiency Step-Down Converter
in Low Profile Chip Scale Packaging (Height < 0.4mm)
1 Features
•1 92% Efficiency at 6MHz Operation
• 17μA Quiescent Current
• Wide V_IN Range From 2.3V to 4.8V
• 6MHz Regulated Frequency Operation
• Spread Spectrum, PWM Frequency Dithering
• Best in Class Load and Line Transient
• ±2% Total DC Voltage Accuracy
• Low Ripple Light-Load PFM Mode
• ≥35dB V_IN PSRR (1kHz to 10kHz)
• Simple Logic Enable Inputs
• Supports External Clock Presence Detect Enable
Input
• Three Surface-Mount External Components
Required (One 0603 MLCC Inductor, Two 0402
Ceramic Capacitors)
• Complete Sub 0.33-mm Component Profile
Solution
• Total Solution Size <10 mm²
• Available in a 6-Pin NanoFree™ (CSP)
Ultra-Thin Packaging, 0.4mm Max. Height
2 Applications
• Cell Phones, Smart-Phones
• CMOS Camera Module, Optical Data Module
• Digital TV, WLAN, GPS and Bluetooth™
Applications
• Embedded Power Supply
3 Description
The TPS6267x devices are high-frequency
synchronous step-down dc-dc converters optimized
for small battery-powered applications. Intended for
low-power applications, the TPS6267x supports up to
650-mA load current and allows the use of low cost
chip inductor and capacitors.
With a wide input voltage range of 2.3V to 4.8V, the
device supports applications powered by Li-Ion
batteries with extended voltage range. Different fixed
voltage output versions are available from 1.05V to
2.1V. The TPS6267x 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 17μA (typ) during light load
operation. For noise-sensitive applications, the device
has PWM spread spectrum capability providing a
lower noise regulated output, as well as low noise at
the input. These features, combined with high PSRR
and AC load regulation performance, make this
device suitable to replace a linear regulator to obtain
better power conversion efficiency.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS62671,
TPS62672,
TPS62674,
TPS62675,
TPS626751,
TPS626765
DSBGA (6)
1.22mm x 0.85mm
TPS62679
PicoStar (6)
1.22mm x 0.85mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
4 Simplified Schematic
V_BAT
2.3 V .. 4.8 V
TPS62671
VIN
L
SW
0.47 mH
C_I
2.2 mF
EN
GND
FB
MODE
V_OUT
1.8 V @ 500mA
C_O
4.7 mF
1
Efficiency vs Output Current
100
V_I = 3.6 V,
90 V_O = 1.8 V
80
Efficiency
PFM/PWM Operation
70
60
50
40
30
Power Loss
PFM/PWM Operation
20
10
0
0.1
1
10
100
I_O - Load Current - mA
150
135
120
105
90
75
60
45
30
15
0
1000
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. UNLESS OTHERWISE NOTED, this document contains PRODUCTION
DATA.