CSP-6
TPS62619, TPS62612
TPS62615, TPS62616
www.ti.com
SLVS936A –NOVEMBER 2009–REVISED MARCH 2010
350-mA, 6-MHz HIGH-EFFICIENCY STEP-DOWN CONVERTER
IN LOW PROFILE CHIP SCALE PACKAGING (HEIGHT < 0.4mm)
Check for Samples: TPS62619, TPS62612, TPS62615, TPS62616
1
FEATURES
23
•
90% Efficiency at 6MHz Operation
DESCRIPTION
•
31mA Quiescent Current
The TPS6261x device is
a
high-frequency
•
•
•
•
•
•
•
•
•
Wide VIN Range From 2.3V to 5.5V
6MHz Regulated Frequency Operation
Best in Class Load and Line Transient
±2% Total DC Voltage Accuracy
Automatic PFM/PWM Mode Switching
Low Ripple Light-Load PFM Mode
>50dB VIN PSRR (1kHz to 10kHz)
Internal Soft-Start, 100-ms Start-Up Time
synchronous step-down dc-dc converter optimized for
battery-powered portable applications. Intended for
low-power applications, the TPS6261x supports up to
350-mA load current, and allows the use of low cost
chip inductor and capacitors.
With a wide input voltage range of 2.3V to 5.5V, the
device supports applications powered by Li-Ion
batteries with extended voltage range. Different fixed
voltage output versions are available from 1.2V to
2.3V.
Integrated Active Power-Down Sequencing
(Optional)
The TPS6261x 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.
•
•
Three Surface-Mount External Components
Required (One 0603 MLCC Inductor, Two 0402
Ceramic Capacitors)
The PFM mode extends the battery life by reducing
the quiescent current to 31mA (typ) during light load
Complete Sub 0.4-mm Component Profile
Solution
Total Solution Size <10 mm2
operation.
For
low-frequency
noise-sensitive
•
•
applications, the device can be forced into fixed
frequency PWM mode by pulling the MODE pin high.
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.
Available in a 6-Pin NanoFree™ (CSP)
Ultra-Thin Packaging
APPLICATIONS
•
•
•
•
Cell Phones, Smart-Phones
WLAN, GPS and Bluetooth™ Applications
DTV Tuner Applications
DC/DC Micro Modules
l
l
The TPS6261x is available in an 6-pin thin chip-scale
package (CSP, 0.4mm max. height).
100
90
200
180
V
V
= 3.6 V,
= 1.8 V
I
O
80
70
60
50
40
30
20
160
140
120
100
80
Efficiency
PFM/PWM Operation
V
V
OUT
1.8 V @ 350mA
TPS6261x
VIN
BAT
2.9 V .. 5.5 V
L
SW
0.47 mH
Power Loss
PFM/PWM Operation
60
C
I
FB
EN
C
O
40
2.2 mF
4.7 mF
10
0
20
0
MODE
GND
0.1
1
10 100
- Load Current - mA
1000
I
O
Figure 2. Efficiency vs. Load Current
Figure 1. Smallest Solution Size Application
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.
2
3
NanoFree is a trademark of Texas Instruments.
Bluetooth is a trademark of Bluetooth SIG, Inc.
UNLESS OTHERWISE NOTED this document contains
PRODUCTION DATA information current as of publication date.
Products conform to specifications per the terms of Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2009–2010, Texas Instruments Incorporated