TPS82670_16 Datasheet, PDF (1/30 Pages) Texas Instruments – 600-mA, High-Efficiency MicroSiP Step-Down Converter (Profile <1.0mm)

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TPS82670, TPS82671, TPS82672, TPS82673, TPS82674, TPS82675, TPS82676
TPS82677, TPS826711, TPS826716, TPS826721, TPS826745, TPS826765, TPS8267195
SLVSAI0J – OCTOBER 2010 – REVISED MAY 2016
TPS8267x 600-mA, High-Efficiency MicroSiP™ Step-Down Converter (Profile <1.0mm)
1 Features
•1 90% Efficiency at 5.5 MHz Operation
• 17μA Quiescent Current
• Wide V_IN Range From 2.3 V to 4.8 V
• 5.5MHz Regulated Frequency Operation
• Spread Spectrum, PWM Frequency Dithering
• Best in Class Load and Line Transient
• ±2% Total DC Voltage Accuracy
• Automatic PFM/PWM Mode Switching
• Low Ripple Light-Load PFM Mode
• ≥35dB V_IN PSRR (1kHz to 10kHz)
• Internal Soft Start, 120-µs Start-Up Time
• Integrated Active Power-Down Sequencing
(Optional)
• Current Overload and Thermal Shutdown
Protection
• Sub 1-mm Profile Solution
• Total Solution Size <6.7 mm²
2 Applications
• Cell Phones, Smart-Phones
• Camera Module, Optical Data Module
• Wearable Electronics
• Digital TV, WLAN, GPS and Bluetooth™
Applications
• POL Applications
3 Description
The TPS8267x device is a complete 600mA, DC/DC
step-down power supply intended for low-power
applications. Included in the package are the
switching regulator, inductor and input/output
capacitors. No additional components are required to
finish the design.
The TPS8267x is based on a high-frequency
synchronous step-down dc-dc converter optimized for
battery-powered portable applications. The
MicroSiP™ DC/DC converter operates at a regulated
5.5-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.
The TPS8267x is packaged in a compact (2.3mm x
2.9mm) and low profile (1.0mm) BGA package
suitable for automated assembly by standard surface
mount equipment.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS8267x
µSIP (8)
2.30 x 2.90 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
4 Simplified Schematic
spacer
spacer
TPS82671SIP
V_IN
2.3 V .. 4.8 V
C_I
DC/DC Converter
L
VIN
SW
GND
FB
ENABLE
EN
MODE
V_OUT
1.8 V @ 600mA
C_O
MODE
SELECTION
GND
Copyright © 2016, Texas Instruments Incorporated
1
Efficiency vs Output Current
100
V_I = 3.6 V,
90 _{VO = 1.8 V}
80
Efficiency
PFM/PWM Operation
70
60
50
40
30
Power Loss
20
PFM/PWM Operation
10
0
0.1
1
10
100
I_O - Load Current - mA
250
225
200
175
150
125
100
75
50
25
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.