TPS62510_16 Datasheet, PDF (1/28 Pages) Texas Instruments – High Efficiency Step-Down Converter

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TPS62510
SLVS651B – MAY 2006 – REVISED DECEMBER 2015
TPS62510 1.5-A, Low V_IN High Efficiency Step-Down Converter
1 Features
•1 1.8-V to 3.8-V Input Voltage Range
• Up to 96% High Efficiency Synchronous Step-
Down Converter
• 1.5-MHz Fixed Frequency PWM Operation
• 1% Output Voltage Accuracy in Fixed Frequency
PWM Mode
• Power Save Mode Operation for High Efficiency
Over the Entire Load Current Range
• 22-μA Quiescent Current
• Adjustable Output Voltage
• Output Voltage Tracking (OVT) for Reliable
Sequencing
• Available in a 3-mm × 3-mm 10-Pin VSON
Package
2 Applications
• Portable Devices (Mobile Phone, Smartphone)
• 2-Cell NiMHd/Alkaline Applications
• Hard Disc Drives
• Point-of-Load Regulation
• Notebook Computers
• WiMAX and WLAN Applications
Typical Application Schematic
VI
1.8 V to 3.8 V
C1
22 mF
Rf 1 W
Cf
100 nF
TPS62510
L1
10
PVIN
1 ^{2.2 mH}
SW
C3
9
AVIN
FB ⁴
22 pF
6 _EN
PG ⁸
5 _OVT
AGND ³
VO
1.5 V/1.5 A
R1
300 kW
R2
200 kW
C2
22 mF
3 Description
The TPS62510 is a high-efficiency step-down
converter targeted for operation from a 1.8-V to 3.8-V
input voltage rail, ideally suited for 2-cell alkaline or
NiMHd applications. The TPS62510 is also ideal as a
point-of-load regulator running from a fixed 3.3-V, 2.5-
V, or 1.8-V input voltage rail.
The converter operates in fixed frequency pulse width
modulation (PWM) mode switching at 1.5 MHz with
the MODE pin high. Pulling the MODE pin low
enables the high efficiency mode. In high efficiency
mode, the device operates with a 1.5-MHz fixed
frequency PWM at nominal load current, and
automatically enters the power save mode at light
load currents. For maximum system reliability, the
converter features output voltage tracking using the
OVT pin to allow sequencing, and to allow for the
output voltage to track an external voltage applied to
this pin.
The TPS62510 is available in a 3-mm × 3-mm 10-pin
VSON package.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS62510
VSON (10)
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Efficiency vs Load Current
95
V_I = 1.9 V
90
(Mode Low)
85 ^VI ^{= 2.4 V}
(Mode Low)
80
7 _{MODE PGND} 2
75
V_I = 1.9 V
(Mode High)
70
V_I = 3.2 V
V_I = 2.4 V
65
(Mode Low)
(Mode High)
60
55
V_O = 1.2 V
50
0.01 0.1
1
V_I = 3.2 V
(Mode High)
10 100 1 k 10 k
I_L - Load Current- mA
1
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. PRODUCTION DATA.