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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 VIN 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 VIN 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 powersave 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
Efficiency - % Power Loss - mW
spacer spacer
TPS82671SIP
VIN 2.3 V .. 4.8 V
CI
DC/DC Converter
L
VIN
SW
GND
FB
ENABLE
EN
MODE
VOUT 1.8 V @ 600mA CO
MODE SELECTION
GND Copyright © 2016, Texas Instruments Incorporated
1
Efficiency vs Output Current
100 VI = 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
IO - Load Current - mA
250 225 200 175 150 125 1.