Document
CSP-6
TPS62690
TPS62691
TPS62697
www.ti.com
SLVS965B – MARCH 2011 – REVISED JANUARY 2012
500-mA / 600-mA, 4-MHz HIGH-EFFICIENCY STEP-DOWN
CONVERTER IN CHIP SCALE PACKAGING
Check for Samples: TPS62690, TPS62691, TPS62697
FEATURES
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•2 95% Efficiency at 4MHz Operation • 19μA Quiescent Current • 4MHz Regulated Frequency Operation • 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 • ≥40dB VIN PSRR (1kHz to 10kHz) • Internal Soft Start, 250-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 • Available in a 6-Pin NanoFree™ (CSP)
Efficiency - % Power Loss - mW
100 VI = 3.6 V,
95 VO = 2.85 V
90 Efficiency
85 PFM/PWM Operation
80
75 Power Loss
70 PFM/PWM Operation
65
60
55
50 0.1
1 10 100 IO - Load Current - mA
150 135 120 105 90 75 60 45 30 15 0 1000
Figure 1. Efficiency vs. Load Current
APPLICATIONS
• LDO Replacement
• Cell Phones, Smart-Phones
• Portable Audio, Portable Media
• DC/DC Micro Modules
DESCRIPTION
The TPS6269x device is a high-frequency synchronous step-down dc-dc converter optimized for battery-powered portable applications. Intended for low-power applications, the TPS6269x supports up to 600-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 voltage output versions are available from 2.2V to 2.9V.
The TPS6269x operates at a regulated 4-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 19μA (typ) 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.
VIN 3.15 V .. 4.8 V
CI 4.7 mF
TPS62690 VIN
EN
L SW
1.0 mH
FB
GND
MODE
VOUT 2.85 V @ 500mA
CO 4.7 mF
Figure 2. Smallest Solution Size Application
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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
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 © 2011–2012, Texas Instruments Incorporated
TPS62690 TPS62691 TPS62697
SLVS965B – MARCH 2011 – REVISED JANUARY 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
PART NUMBER
TPS62690 TPS62691 (4) TPS62697
ORDERING INFORMATION(1)
OUTPUT VOLTAGE (2)
DEVICE SPECIFIC FEATURE
2.85V 2.2V 2.8V
500mA peak output current 600mA peak output current 500mA peak output current
ORDERING (3)
TPS62690YFF TPS62691YFF TPS62697YFF
PACKAGE MARKING CHIP CODE
PB
SU
WA
(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 YFF package is available in tape and reel. Add a R suffix (e.g. TPS62690YFFR) to order quantities of 3000 parts. Add a T suffix
(e.g. TPS62690YFFT) 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(3) Voltage at EN, MODE (3)
Peak output current, IO
Power dissipation
Operating temperature range, TA (4)
Operating junction temperature, TJ
Storage temperature range, Tstg
Human body model
ESD (5)
Charge device model
Machine model
TPS62690, TPS62697
TPS62691
MIN –0.3 –0.3 –0.3
MAX 6 3.6
VI + 0.3
500
UNIT V V V
mA
600 mA
Internally limited
–40 85
°C
150 °C
–65 150
°C
2 kV
1 kV
200 V
(1) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings
only and functional operation of the devi.