Document
CSP-6 TPS62692, TPS62693 TPS62694, TPS62698
www.ti.com
SLVSAZ1 – DECEMBER 2012
800-mA , 3-MHz HIGH-EFFICIENCY STEP-DOWN CONVERTER
Check for Samples: TPS62692, TPS62693, TPS62694, TPS62698
FEATURES
1
•23 95% Efficiency at 3MHz Operation • 21 μA Quiescent Current • 3 MHz Regulated Frequency Operation • Spread Spectrum, PWM Frequency Dithering • High Duty-Cycle Operation • ±2% Total DC Voltage Accuracy • Best in Class Load and Line Transient • Excellent AC Load Regulation • Low Ripple Light-Load PFM Mode • ≥40 dB VIN PSRR (1 kHz to 10 kHz) • Internal Soft Start, 350-μs Start-Up Time • Integrated Active Power-Down Sequencing
(Optional) • Current Overload and Thermal Shutdown
Protection • Three Surface-Mount External Components
Required (One 2012 MLCC Inductor, Two 0402 Ceramic Capacitors) • Complete Sub 1-mm Component Profile Solution • Total Solution Size <12 mm2 (CSP) • Available in a 6-Pin NanoFree™ (CSP)
DESCRIPTION
The TPS62693 device is a high-frequency synchronous step-down dc-dc converter optimized for battery-powered portable applications. Intended for low-power applications, the TPS62693 supports up to 800-mA load current, and allows the use of low cost chip inductor and capacitors.
The device is ideal for mobile phones and similar portable applications powered by a single-cell Li-Ion battery. Different fixed output voltage versions are available in the range from 2.2 V up to 3.3 V.
The TPS62693 operates at a regulated 3-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 21 μA (typical) during light load operation. For noise-sensitive applications, the device can be forced into fixed frequency PWM mode by pulling the MODE pin high. This feature, combined with high PSRR and AC load regulation performance, make this device suitable to replace a linear regulator to obtain better power conversion efficiency.
APPLICATIONS
• Memory Cards • LDO Replacement • Cell Phones, Smart-Phones • WLAN, Bluetooth™ Applications
VIN 3.15 V ... 4.8 V
CI 2.2 mF
TPS62693 VIN SW
L 1.0 mH
EN FB
GND
MODE
VOUT 2.85 V @ 800mA
CO 4.7 mF
Figure 1. Smallest Solution Size Application
100
90
80
70
Efficiency (%)
60
50
40
30
20
10 VOUT = 2.85V
0 0.1 1
10 Current (mA)
VIN = 3.0V VIN = 3.6V VIN = 4.2V VIN = 3.6V (PWM)
100 1000
G000
Figure 2. Efficiency vs. Load Current
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 is a trademark of Texas Instruments.
2
Bluetooth is a trademark of Bluetooth SIG.
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
TPS62692, TPS62693 TPS62694, TPS62698
SLVSAZ1 – DECEMBER 2012
www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
TA -40°C to 85°C -40°C to 85°C -40°C to 85°C -40°C to 85°C
PART NUMBER TPS62692
TPS62693
TPS62694 TPS62698
ORDERING INFORMATION(1)
OUTPUT VOLTAGE (2)
DEVICE SPECIFIC FEATURE
2.2 (4) 2.85 2.95 (4) 3.0
800 mA peak output current Output Discharge
Spread Spectrum Frequency Modulation
800 mA peak output current Output Discharge
Spread Spectrum Frequency Modulation
800 mA peak output current Output Discharge
Spread Spectrum Frequency Modulation
800 mA peak output current Output Discharge
ORDERING (3) TPS62692YFD TPS62693YFD TPS62694YFD TPS62698YFD
PACKAGE MARKING CHIP CODE
TW
UD
B6
B7
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI website at www.ti.com.
(2) Internal tap points are available to facilitate output voltages in 25mV increments. (3) The YFD package is available in tape and reel. Add a R suffix (e.g. TPS62692YFDR) to order quantities of 3000 parts. Add a T suffix
(e.g. TPS62692YFDT) to order quantities of 250 parts. (4) Product preview. Contact TI factory for more information.
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range (unless otherwise noted)(1)
Input Voltage
Voltage at VIN(2)(3), SW(3) Voltage at FB(4) Voltage at EN, MODE (3)
Peak output current, IO
Power dissipation
Operating temperature range, TA (5)
Operating junction temperature, TJ
Storage temperature range, Tstg
ESD (6)
Human body model Charge device model
MIN –0.3 –0.3 –0.3
–40
–65
MAX 6 3.6
VI + 0.3 800 (4) Internally limited
85 150 1.